BiG X 680 · 780 · 880 · 980 · 1080 · 1180

Forage harvesters from 687 to 1156 hp

BiG X 680 · 780 · 880 · 980 · 1080 · 1180

Forage harvesters

BiG X 680 ∙ 780 ∙ 880 · 1180, the XXL forage harvesters from KRONE for outputs of 687hp to 1156hp. They not only impress by their high ­efficiency and chop quality but also by high operator comfort and easy handling.

  • High-power and fuel efficient engines from 687hp to 1156hp
  • 6 intake rollers for boosted reliability and a top quality chop
  • MaxFlow chopping drums with 20, 28, 36 blades; Biogas drums with 40 and 48 blades
  • Roller and disc conditioners for all applications
  • KRONE VariLOC for flexible choice of long and short chops
  • KRONE VariQuick for fast changeovers to conditioning or grass cutting
  • Convenient hoop coupler for easy attachment to the base machine
  • Enormous agility from independent wheel suspension
  • Height-adjustable comfort cab for optimum visibility

Product video

KRONE BiG X 680 ·780 · 880 · 1180 – Forage harvester

BiG X 680 ∙ 780 ∙ 880 ∙ 1180, the XXL forage harvesters from KRONE for outputs of 687hp to 1156hp. They not only impress by their high efficiency and chop quality but also by high operator comfort and easy handling.

Product features

Forage harvesters
  • 6 intake rollers for maximum reliability and best chop quality
  • MaxFlow chopping drums with 20, 28, 36 blades, biogas chopping drum with 40 and 48 blades
  • ­­­KRONE VariLOC: flexible use in long and short cut
  • OptiMaxx roller conditioners with up to 305 mm diameter, 710 mm width and slanted teeth for intensive kernel conditioning
  • ­­KRONE VariQuick: quick changeover for working with and without corn conditioner
  • ­­KRONE VariStream: Continuous crop flow ensured by spring-loaded floors for chopping drum and discharge accelerator
  • Powerful and low-emission engines from 687 to 1,156 HP
  • Great manoeuvrability from independent wheel suspension: For extreme manoeuvrability
  • Height-adjustable comfort cab: For optimum visibility

BiG X 680 – 1180, these are the extra powerful forage harvesters from ­­KRONE with an output of 687 to 1,156 HP. They impress not only with their high output and chop quality, but also with their comfort and handling.

KRONE OptiMaize
  • KRONE chopping technology for optimum maize forage quality
  • OptiMaize S, M, L, XL for variable chopping lengths from 4 mm to 30 mm
  • KRONE MaxFlow and Biogas drums with different blade specifications combine for producing the
    chops length you need
  • KRONE OptiMaxx roller conditioners ensure optimum fracturing and kernel treatment
  • KRONE VariLOC for flexible long and short chops without conversing the machine

OptiMaize brings full flexibility to all KRONE BiG X harvesters, allowing them to produce any type of chop length livestock farmers and Biogas producers call for. MaxFlow and Biogas drums are available with various numbers of blades and combine with matching KRONE conditioners to deliver perfect 4-30 mm (0.2"-1.2") chops and the most intensive treatment. The BiG X offers this wide range of chops without operators having to swap or refit the chopping drum – simply by reducing the cutting frequency with the help of VariLOC.

‘OptiMaizing’ – a KRONE concept for BiG X forage harvesters

The OptiMaize concept was developed by ­­KRONE and aims at producing forage of a superior quality. Livestock farmers ask for different chop lengths that meet different aims in the silage maize ration. The smaller the amount of fibres in the ration, the longer should the maize chops be to suit the needs of rumens.
By comparison, chop lengths should be short when the maize is used to fuel Biogas plants whereas the feed rations for beef bulls and dairy cows require much longer chop lengths to add structure to the ration. ­­KRONE OptiMaize combines various chopping drums (see table) and conditioners that enable BiG X forage harvesters to produce short and long chops of maize allowing machine owners to respond to individual customer needs. If you have to produce short biogas maize chops in the morning but coarse maize chops for animal feed in the afternoon, you will find ­­KRONE VariLOC the ideal solution for you.
This manual gearbox, which is integrated into the pulley of the chopping drum, can reduce the drum speed from 1,250 to 800 rpm within a few minutes. This reduces the cutting frequency and increases the range of available chop lengths by up to 50 %. In this way, it is possible to choose between short and long cut at short notice without the additional expense of converting the drum. This in combination with the ­­KRONE OptiMaxx roller conditioners makes BiG X a truly all-round machine.

The chop length can be grouped into four different ranges: OptiMaize S, M, L, XL. Each concept describes a different technical solution that leads to customised lengths that suit all applications.

OptiMaize S

OptiMaize S: Maize that is harvested to fuel biogas plants is chopped to very short lengths. Depending on moisture levels, chops of 4 mm to 7 mm lengths have been found ideal for this application, because shorter chops make the energy readily available to the methane producing bacteria in the fermenter thereby increasing gas yields. The KRONE forage harvesters use a Biogas drum with 40 or 48 blades to harvest biogas maize. Alternatively, OptiMaize S results can also be achieved with the 36 blade MaxFlow drum. For good fermentation, the leaves and stalks are subsequently fractured and the kernels destroyed by a KRONE corn conditioner with 123/144 teeth and rotors rotating at a 30 % speed difference.

OptiMaize M

OptiMaize M: Grass based rations for beef bulls and dairy cows which consist of up to 40 % of maize should be made up of 8 mm to 10 mm (0.3" to 0.4") chop lengths. This length of cut and an appropriate conditioning intensity avoids lack of fibre in the ration. OptiMaize M chopping quality is achieved by the MaxFlow drums with 36 and 28 blades. The ideal conditioner is the KRONE corn conditioner with 123/144 teeth whose speed differential can be increased from 30 % to 40 % or 50 %.

OptiMaize L

OptiMaize L: Chop lengths of 11 mm to 19 mm are ideal for dairy feed rations where the percentage of maize is about 60 %. Rumens require silage maize that is reach in fibres. The OptiMaize L chopping quality is achieved by the KRONE MaxFlow drums with 28 or 20 blades. The complementary conditioner for these drums is the assembly with 105/123 teeth.The speed differential on these rollers can be increased from 30 % to 40 % or 50 %.

OptiMaize XL

OptiMaize XL: The maize in dairy feed rations made up of more than 80% by maize and that do not contain sufficient quantities of grass and feed straw should be chopped to 20 mm to 30 mm lengths to avoid lack of structure in the feed. The ideal drum for long chops is the MaxFlow drum with 20 blades which is complemented by the KRONE OptiMaxx roller conditioner with 105/123 teeth and 30%, 40% or 50% speed differentials.

The crop flow

The crop flow

  • „Six intake rollers ensure a top-notch quality of chops
  • High throughput with universal and biogas drums
  • OptiMaxx roller conditioners for intensive kernel processing
  • Flexible chop lengths through VariLOC and the use of only half the number of blades
  • Continuous crop flow from VariStream
  • Variable crop throw is an option using StreamControl
  • Quick changeovers between corn and grass thanks to VariQuick

Its innovative technology makes the BiG X a superior chopper with respect to performance and quality. Chopping lenghts can be set to individual requirements by adjusting the speeds of the intake rollers and using different numbers of blades on the chopping drum. Highest through puts are implemented by the spring-loaded floor underneath the drum and a spring-loaded accelerator backplate which guarantee a continuous crop flow.

The crop flow

Intake system
Helps achieve the desired chop length

  • 6 hydraulic intake rollers
  • The speed is set steplessly from the cab

Chopping drum
The guarantee for top quality chops

  • MaxFlow chopping drums with 20, 28 or 36 blades
  • Biogas chopping drums with 40 and 48 blades


  • Powerful discharge accelerator
  • Adjustable discharge distance
  • Precision fills of trailers following behind
  • Reduced power when filling trailers running alongside
  • Working without losses

The OptiMaxx roller conditioners

  • Rollers with 250 or 305 mm diameter and 710 mm width for maximum performance
  • Slanted teeth give a unique shearing effect for perfect cracking
  • Up to 50 % speed difference for optimum fracturing results

Minimum changeover time between grass channel/corn conditioner

  • Quick changeovers between corn conditioning and harvesting grass
  • Removing the corn conditioner is convenient using a lowering mechanism


  • Maximum throughput
  • Spring-loaded chopping drum floor
  • Spring-loaded rear wall of discharge accelerator
  • Continuous crop flow even with uneven crop feed
The intake system
  • Hydraulic drive: The chop length is steplessly adjustable from the cab
  • Automatic setting of the chop length via AutoScan or NIR sensor
  • 6 pre-compression rollers for top-quality chops
  • Perfect protection from foreign objects: Long path from the metal detector to the chopping drum and metal detection across the entire width of the channel

On a BiG X, it is also the intake system that has an influence on the quality of chop. The six intake rollers continuously press the chopped material with high pressure so that it can be chopped more easily and precisely. The hydraulic drive of the infeed elements allows manual or automatic adjustment of the cutting length.

Versatile and flexible

Versatile and flexible: Six pre-compression rollers and the 820 mm gap between the leading roller with metal detector and the counterblade not only enhance pre-compression but also protect the blades better against metal objects, even at high-speed intake. The hydraulic drive in combination with AutoScan adjust the chop length automatically to the maturity of the crop.

Across the full width

Across the full width: The leading bottom rollers are studded with sensors across the full width which detect any metal that is about to enter the machine. The large throat volume makes for highest throughputs. The robust drives withstand the highest strains.

Always under pressure

Always under pressure: A system of pushing and pulling springs on the intake rollers combines to give maximum and consistent precompression in this area.

Folding open

Folding open: Operators can fold the intake system forward to gain access to the chopping drum and the counterblade.

Carefully designed

Convenient servicing: The intake system is placed on a trolley for user-friendly inspection and servicing.

The KRONE chopping assembly
  • KRONE chopping drums with 20, 28, 36, 40 or 48 blades
  • High inertia: enclosed 660 mm (2'2") diameter drums
  • Bespoke 800 mm (2'7") wide drums for the BiG X 680, 780, 880 and 1180 models
  • Extremely fuel-efficient courtesy of a high inertia and pulling cuts

Matching the drum dimensions to the forager model and choosing the optimum number of blades not only boosts machine power but also makes the forager more flexible to suit more applications. The wide range of OptiMaize drums that are available for BiG X deliver top-quality chops in versatile applications anywhere in the world.

Optimum crop mats

It's not just the number of blades that accounts for a good quality chop.The thickness of the mat that passes through them and therefore the width of the chopping drums are just as important. The 800 mm KRONE MaxFlow and KRONE Biogas drums on the BiG X 680, 780, 880 and 1180 guarantee just that.

The material is pulled over the blades

The material is pulled over the blades: The blades on the KRONE chopping drums are arranged chevron-style and at an angle of 11° relative to the counterblade. This arrangement makes for a continuous crop flow, extremely quiet running and maximum efficiency.

Kitted out to purpose

Kitted out to purpose: BiG X can be fitted with grass or maize blades. Slots on the blades allow for precision adjustment relative to the counterblade and protect the blades against breakage when they hit foreign objects..

Cutting edge

Cutting Edge: To ensure a good quality cut, the blade and the counterblade must be set to the correct gap. The blades are quick and easy to align using the eccentric plate.

Protected drum body

Protected drum body: Protected drum body The carrier bars of the blades have another function besides: they protect the closed drum from wear.

The KRONE Biogas chopping drum
  • 40- and 48-blade Biogas drums for OptiMaize S results
  • High cutting frequency, fewer overlengths
  • Very economical: high throughput at low consumption
  • Short chops for high gas yields

The KRONE Biogas drum with 40 or 48 blades chop the material very intensively. OptiMaize S achieves very short chops which enable high throughputs both on the machine and in the fermenter, making BiG X a major factor in biogas plant productivity.

40-blade drum for OptiMaize S

40-blade drum for OptiMaize S: With its higher throughputs and lower fuel consumption per tonne of chopped maize, the 40-blade Biogas cylinder pays for itself in no time. The extremely short chops of 2.5 mm to 15 mm ferment at a higher rate and increase the gas yield, allowing farmers to produce more biogas from a smaller fi eld.

High frequency of cuts

High frequency of cuts: 40 blades can achieve an impressively high cutting frequency. So the Biogas drum cuts harvesting time and increases throughput – even when producing short LOCs.

More power, lower costs

Chopping the crop to short lengths, the KRONE Biogas drum with 40 blades increases throughput by nearly 25% over what is achieved by a standard 28-blade drum.At the same time, fuel consumption drops by approx. 16% per tonne of chopped material.

48-blade drum for OptiMaize S

48-blade drum for OptiMaize S: Delivering a 20% higher cutting frequency than the 40-blade drum and a theoretical LOC ranging from just 2 to 12 mm, this Super Biogas drum with 8 blades produces an even shorter chop, Boosting gas yields and throughput at the biogas plant even further and reducing fuel consumption per tonne of crop with the same LOC.

The KRONE OptiMAXX roller conditioners
  • OptiMaxx roller conditioners with 250 or 305 mm diameters
  • Slanted teeth for perfect conditioning to combine with OptiMaize S-XL drums
  • The gap between the rollers is conveniently adjusted from the cab
  • A strong spring assembly provides a consistent and high pressure
  • Maximum fracturing from an up to 50% speed difference (option)
  • BusaCLAD-Special coating technology for maximum service life

Every single kernel must be cracked to achieve an optimal digestibility. These user demands are perfectly met by the new OptiMaxx 250/305 roller conditioners with their slanted teeth, a new KRONE development.

Perfect conditioning

Perfect conditioning: The new OptiMaxx roller conditioners have their teeth slanted at a 5° angle.This slant produces a clearly higher shearing effect and perfect conditioning of the crop which receives a very intensive treatment both length- and sideways.

Maximum intensity

Maximum intensity: The two toothed rollers operate at a 30 % speed difference. This standard difference can now increase to 40-50 % to deliver 100 % conditioning and fracturing of long chops as produced by OptiMaize XL.

Variable roller gap

Variable roller gap: The gap between the rollers varies between 0.5 mm and 7.0 mm (0.3") and is adjusted steplessly by an electric motor from the cab.The current setting is shown on the display screen.

Always plenty of pressure

Always plenty of pressure: The two roller conditioners OptiMaxx 250 and 305 (left) are controlled by a massive and powerful spring assembly which applies a consistently high pressure on the crop and hence intensive conditioning to grains and stovers.

The top-standard OptiMaxx 250

With the new OptiMaxx 250, KRONE presents a roller conditioner that off ers an even higher performance for the BiG X 680, 780, 880, 1180 models. This new development stands out for the following features:

  • 250 mm diameter rollers have slanted teeth that give a unique shearing effect
  • 10% longer rotors and a 7% higher rpm over the previous model.The greater length increases the friction
    surface area and ensures an effective crop intake, intensive conditioning and optimum cracking results
  • Bigger and stronger springsapply a consistently high pressure on the crops
  • The two rollers in the assembly have different numbers of teeth:
    • 105/123 for medium and long chopping lengths
    • 123/144 for short and medium chopping lengths
  • A standard 30 % speed difference with a 40 % of 50 % differential being an option for intensive fracturing and optimum cracking results
  • BusaCLAD-Special coating technology as an option for maximum service life
  • Optional temperature sensors are available on the roller bearings for measuring the temperature and transmitting the readings to the operator terminal for maximum reliability and peace of mind.
OptiMaxx 305 for maximum output

OptiMaxx 305 was developed to bring more chopping power to the high-capacity BiG X 680/780/880/1180 models.Offering a 55 mm larger diameter than the OptiMaxx 250, this roller conditioner is the perfect match for the gargantuan appetite of these top-end foragers.

  • 305 mm diameter rollers with oblong teeth give a special shear effect
  • A 11 % larger friction surface area and 20 % higher peripheral speed (than OptiMaxx 250) ensure an exemplary crop intake, intensive conditioning and optimum cracking amid high throughputs and long chop lengths.
  • Stronger and more powerful springs apply a uniform, constant and high pressure on the crops 
  • A redesigned casing with beefier mountings ensures durability and longevity
  • Temperature sensors on the roller bearings transmit the data to the operator terminal and ensure maximum safety
  • Exemplarily easy to service and maintain thanks to large openings. Bearings, rollers and pulleys are replaced quickly and cleaning is as easy.
  • The two rollers in the assembly have different numbers of teeth:
    – 125/150 for medium and long chopping lengths
    – 150/175 for short and medium chopping lengths
  • A standard 30% or optional 40% speed difference for intensive fracturing and optimum cracking results
  • BusaCLAD-Special coating technology as an option for maximum service life
  • Optimaize is a versatile and unique system
  • Gearbox on the chopping drum switches flexibly from short cuts to long cuts
  • Switching the drum speed takes a few minutes
  • No downtime, no machine conversion, no up-front planning

Forming an integral part of the pulley, KRONE VariLOC is a gearbox that alters the speed of the chopping drum. By simply changing the drum speed from 1250 to 800 rpm using a standard open-end wrench, you can increase the chopping drum’s LOC range by up to 50%. This system allows operators to momentarily change from short to long chops and vice versa and meet different customer needs without a major changeover - this is the concept of OptiMaize. In conjunction with the roller conditioner with 105/123 teeth or with the disc conditioner, this technology turns the BiG X into a real all-round forage harvester that offers its owner and user maximum flexibility.

Great flexibility

The KRONE VariLOC is available for the MaxFlow drums with 28 and 36 blades. VariLOC is a mechanical gearbox that allows the MaxFlow chopping drum to produce the full range of chop lengths (OptiMaize S-XL) with 28 or 36 blades.

The ­­KRONE VariLOC is available for the ­­KRONE MaxFlow drums with 28 and 36 blades. VariLOC is a mechanical gearbox that allows the MaxFlow chopping drum to produce the full range of chop lengths (OptiMaize S-XL) with 28 or 36 blades.

Wide cutting range

The KRONE VariLOC increases the cutting lengths that are available from the MaxFlow chopping drums with 28 and 36 blades. For the 36-blade drum it increases the range by 50% from 3-17 mm to 3-24 mm. For the 28-blade drum it increases the range by 45%, which means from 4-22 mm to 4-30 mm. This allows operators to adjust the chop length flexibly as the
application changes.

  • Fast changeovers from grass to corn conditioning and vice versa
  • A chain drive lowers the unit conveniently
  • The changeover takes just a few minutes
  • Fast and easy removal of the corn conditioner

VariQuick is the system that allows operators to converse BiG X very quickly from maize to grass. A chain drive (electric option) moves the corn conditioner out of or into the crop flow. If the corn conditioner is not used for longer periods of time, you can lower it and remove it from the machine by pulling it out to the side.

Quick changeover

Quick changeover: Change from maize to grass or from whole crop silage to grass on the move – either using a chain drive with crank handle or an electric motor as an option. This allows BiG X to change from maize to grass or from whole crop silage to grass flexibility and quickly.

Easy to transport

Easy to transport: After the transport wheels are fitted without tools, the corn conditioner pulls out to the side and is conveniently rolled to the shed.

Corn Conditioner in use

Corn Conditioner in use: In this position, the crop flows through the corn conditioner. This way, the conditioner can subject the kernels to intensive treatment to make the nutrients available.

Corn Conditioner in park position

Corn Conditioner in park position: The chain drive moves the corn conditioner out of the crop flow and into its parking position so work can temporarily continue in grass without any major changeover.

Removing the Corn conditioner

Removing the Corn conditioner: If the corn conditioner is not used for an extended period of time, you can lower it with the help of the chain drive and then remove it.

  • Consistently smooth performance despite inconsistent crop flows
  • Extremely smooth running – also in lumpy swaths
  • High throughputs
  • Top quality chop
  • Operator comfort to perfection

KRONE VariStream comprises a spring-loaded floor beneath the chopping drum and a spring-loaded back plate in the crop accelerator housing.The system ensures blockage-free and smooth operation, even in varying volumes of crop. The technology allows operators to utilise the forager to its limit and use less fuel per hour.

Springs make the difference

Lumps in uneven swaths absorb operator attention, reduce the overall performance level and can cause blockages. On BiG X, the chopping drum floor and the accelerator backplate are both spring-loaded to move momentarily out of the crop flow when the volume surges temporarily. The flexible cross section helps reduce the load on the engine and the chopping assemblies, and makes for quieter running and higher outputs.

Best quality of chop despite inconsistent crop flows

Best quality of chop in inconsistent crop flows: The spring-loaded chopping drum floor is connected to the anvil of the counterblade at the front. As these are readjusted, the gap between the blades and floor does not change. So any movement of the spring-loaded chopping drum floor that compensates for an inconsistency in the crop flow will not affect the quality of chop.

A tight crop stream

A tight crop stream: The spring-loaded backplate on the crop accelerator ensures maximum throws and targeted fills in all conditions.

  • Adjustable discharge distance from the cab as an option
  • Tight crop stream even with a long crop throw
  • The shorter the crop throw, the less power is needed
  • Fills the transport wagon accurately without spillage

The crop throw is controlled from the cab by adjusting the door in the backplate on the crop accelerator.This way, operators can adjust the throw quickly to the current filling situation. As the accelerator needs less power to cover a short distance, the operator can free up engine output and use it for chopping and higher throughputs.

Short-distance throws

Short-distance throws: Filling trailers that are travelling alongside the forager does not require a powerful throw. Instead, in these situations engine output can be freed to boost the chopping capacity.

Long-distance crop throws

Long-distance crop throws: With the trailer following behind, the crop stream needs to be ejected from the spout at a higher speed. A strong, tight stream is needed to cover the long distance over the tractor to the trailer.

Discharge accelerator

Discharge accelerator: The paddles are designed for high crop output and guide the powerful crop fl ow towards the middle.

Variable throws

Variable throws: The crop throw is controlled via the hinged flap on the backplate of the accelerator. For a short throw, the flap moves out of the crop flow, so there is little contact between the crop and the accelerator. For a long throw, the flap moves into the crop flow, so there is more contact between the crop and the accelerator.

Stepless electric motor control

Stepless electric motor control: The hinged flap on the backplate of the accelerator is adjusted steplessly via an electric servomotor.

Joystick controlled

Joystick control: The throw is quickly changed on the joystick controls.

Armrest control

Armrest control: The additional crop throw control in the armrest offers operator comfort to the max.

The KRONE headers
  • Headers are swapped easily
  • Convenient attachment and removal
  • Very short set-up times
  • Compact combination
  • Maximum safety

The multi-coupler system of the BiG X allows operators to couple headers fast, easy and dependably from the seat, reducing changeover times when preparing for road travel or different crops. This way, more time is spent on productive work.

Perfect fit

Perfect fit: The robust intake system features guide rolls at the top and a supporting base at the bottom with locking pins (hydraulic as an option) which make attachment and removal easy and convenient and give accurate control to the header.

Very adaptable

Very adaptable: The header pivots freely to follow the ground contours as it suspends on a hydraulic cylinder on the side of the pivoting base which is made pressureless to give free pivoting.

Easy attachment

Easy attachment: The two guide rolls on the base machine trap the curved round steel bracket on the header. Attaching the header to the base machine is as simple as that.

A unique pivoting system

A unique pivoting system: The header pivots laterally on the steel tubes that are trapped in the guide rolls. This type of attachment is easy and straightforward and makes for a large pivoting range.

Convenient for operators

Convenient for operators: Pins down on the frame lock the header in place. These pins can be operated hydraulically as an option from the seat for convenient header attachment.


Automatic: The multi-coupler couples the header automatically and reliably. The coupler is spring-loaded as an option. The frictional connection handles the highest loads.

KRONE EasyFlow 300 S · 380 S
  • Hard wearing pick-up without cam track, six rows of tines in W-arrangement
  • Automatic pick-up speed adjustment to the current driving speed
  • Gauge wheels on the sides and at the rear ensure perfect ground following
  • Intake area lined with replaceable wear plates
  • Quick header attachment thanks to curved round steel bracket

The camless EasyFlow 300 S and 380 S pick-ups have neither guide rollers nor cam tracks. Compared with conventional pick-ups, EasyFlow has up to 58% fewer moving parts, which makes it impressively smooth running, low-wear and therefore inexpensive in service and maintenance. EasyFlow operates 30% faster for cleaner gathering and increased productivity.


Large capacity: Working at widths of 3 m and 3.8 m, the EasyFlow pick-up on a BiG X gives the machine plenty of intake capacity. Depending on the swath width and your working speed, you can vary EasyFlow rpm steplessly from the cab or have it adjusted automatically to the current forward speed without the operator having to interfere. Its curved round steel bracket gives the Header the flexibility to pivot through a large angle and makes for easy attachment and removal.

Going with the flow

Going with the flow: Six rows of double tines are arranged in a ‘W’ for a consistent and clean gathering of the crop even when the swath is not uniform.

Grass head with crop press roller

Grass head with crop press roller: The standard-fit crop press roller is adjustable for a uniform crop flow also at high ground speeds.

Convenient for operators

Convenient for operators: When the machine reverses the cross auger and the large crop press roller are raised automatically to give easy access to the intake system so foreign objects that were detected by the metal detector can be removed conveniently. When work is resumed, the press roller and the auger automatically return to their working position.

Adapting all the time

Adapts to conditions: Its stepless height adjustment function and adjustable spring-loaded suspension allows the crop press roller to roll smoothly and adapt easily to varying windrow widths.

Rapid travel between fields

Rapid travel between fields: The unsteered and height-adjustable gauge wheels on the sides move hydraulically into transport position – simply upon a touch of button.

Excellent ground tracking

Excellent ground tracking: Two height-adjustable gauge wheels ensure optimum ground contouring on large work widths.

High throughputs

The large, 600 mm (2') diameter auger performs impressively even in dense, over-long crops.


Ultra-durable: Replaceable wear plates increase the service life of the trough in the intake area.

Two settings

Two settings: The serrated infeed plates can be set to one of two positions to provide different levels of aggressiveness, giving you the flexibility to respond to all conditions.

Strong drives

Strong drives: The drives for the pick-up and the auger are robust enough to handle even the toughest loads. They are fitted with automatic clutches for overload protection.

KRONE XDisc 620
  • Higher throughput at 6.2 m work width
  • The KRONE EasyCut disc mower technology proven the world over
  • KRONE SmartCut for clean cuts
  • Curved round steel bracket for fast attachment and removal and optimal ground following
  • Header trailer approved for 40 km/h

Based on the well-proven KRONE EasyCut cutterbar technology, the XDisc direct cutting system allows the BiG X to cut and chop whole crop silage in one operation, which features SmartCut cutting performance and quality and SafeCut impact damage protection.

SmartCut for stripe-free cuts

SmartCut for streak-free cuts: As the mower discs turn in both directions, the individual orbits must overlap precisely to ensure a clean cut. To reduce streaking cuts we have increased blade overlaps on the discs turning outwards. In addition, the blades turning to the rear are now further apart to promote smooth flows of large volumes of crop.

SafeCut is safer

SafeCut is safer: SafeCut centres on a roll pin that connects each disc to the gear and shears off upon impact with a foreign object.As a result the affected discs jacks up on a thread and out of the risk zone. The disc is not lost.

Changing blades in an instant

Changing blades in an instant: Quick-change blades are a must for many farmers and contractors, because this way they can replace blades quickly and easily on the site.

No damage

No damage: The SafeCut feature on the disc mower prevents a damaged disc from colliding with the blades on the neighbouring discs preventing damage to the spur gears. The XDisc comes with SafeCut as standard.

Maximum throughput

Maximum throughput: The huge 900 mm diameter feed auger gives BiG X enormous throughput capacities. The pivoting unit has a reversing mechanism and the auger flights have replaceable Hardox steel wear plates.

Blockage-free work

An optional crop press roller is available for the XDisc header which optimises the crop flow into the machine when harvesting high-yielding and tall stands. The roller enjoys blockage-free work even in extreme conditions

Side knives

Side knives: The direct cut header can be equipped with side knives as an option. The two knives are driven hydraulically and ensure loss-free harvesting of entangled crops like vetch rye mixes or whole crop silage mixes.

The driveline

The driveline: The cutterbar is driven by an angular gearbox, the auger is driven by a chain. The overrunning clutch inside the cutterbar allows the discs to come gradually to a standstill instead of stopping abruptly when the machine is shut off. The auger features overload protection in the form of a star ratchet.

Fast attachment and removal

Fast attachment and removal: Fitting/removing the XDisc is quick and easy. The two guide rolls on the base machine trap the curved round steel bracket on the header. The spring-loaded quick driveline coupler and the hydraulic locking system are options.

Safe and swift road travel

Safe and swift road travel: The direct cut header stores quickly and easily on the bespoke trailer with integral braking system for safe travel on public roads.

Harvesting without losses

KRONE XDisc is a versatile direct cut header that cuts whole crop silage cleanly and without losses. The powerful and massive 900 mm diameter feed auger on the XDisc 620 works trouble-free even in dense and tall crops.

  • Variable-row maize headers with 4.5m to 10.50m working widths
  • Best quality of chop, fewer overlength fractions from linear crop feed
  • Simple technology and low input power
  • The central gearbox
  • An extra running gear is available as an option for the two-piece EasyCollect model offering maximum road safety.

The variable-row EasyCollect header is a versatile unit that feeds the stalks lengthwise into the machine, which translates into an unsurpassed quality of chop. The unique collector principle from KRONE cuts labour costs and has proved its worth time and again the world over.

High-power & high-efficiency

High-power & high-efficiency: Working at widths of up to 10.5 m (34’5”), BiG X features the widest variable-row width header in the world. The endless collectors feed the stalks to the middle where they are turned through 90° and pulled in lengthwise.

Pulling the crop over the blades

Rigid multi-section blades and endlessly moving blades combine to sever the stalks with scissor-like cuts. The blades are self-sharpening and easy to replace.

Straightforward and good

Simple design: The 2-piece maize headers stand out for their straightforward design and uncluttered build. Its narrow transport width, its slim design and excellent visibility translate into safe travel between fields.

The central gearbox

The central gearbox: The drive power flows efficiently from the central gearbox down auto-coupling driveshafts to the folding collectors.

Convenient for operators

Convenient for operators: An additional running gear is available for the two-piece maize headers which shifts weight to the front axle for safer and even more convenient road travel. The running gear is conveniently locked and unlocked from the cab.

Simply ingenious

Exclusive, proven design: EasyCollect maize heads are built to a simple and modular design with endlessly moving collectors. This design leads to a much lighter weight, less maintenance and a long service life.

Clean gathering

Clean gathering: EasyCollect gathers the individual rows of maize firmly and feeds them to the middle of the header and into the machine. It is this tidy and lengthwise feed that accounts for the outstanding quality of the chop Also under difficult harvesting conditions as for example lodged maize, tidy gathering is guaranteed.

Uniform stubble height

Uniform stubble height: The ground tracers on either end of EasyCollect help maintain a uniform stubble height even in undulating terrain. They signal EasyCollect to follow the set depth in and across the direction of travel.

Optimum crop flow

Optimum crop flow: The crop divider adjusts its height hydraulically to different stalk lengths, so the round steel hoops at the top grab the stalks and pull them into the machine.

Great stability and excellent tracking

Great stability and excellent tracking: When Autopilot is enabled, the sensor arms on the central cone scan the distance between two crop rows. Then the KRONE BiG X is guided automatically along that row, which helps reduce operator fatigue.

Widest intake system

Widest intake system: The dimensions of the EasyCollect intake system match the width of the intake rollers and ensure maximum throughput and top quality chops. The inline flow of the crop and the large intake width combine to provide a steady and uniform crop feed.

KRONE XCollect
  • Available work widths are 6 m, 7.5 m and 9 m
  • Variable-row harvesting with rotating sickle discs
  • Operates to the collector principle, splits the processes of cutting and feeding
  • A smooth and soft cut eliminates vibrations and crop loss
  • Operators adjust the cutting frequency infinitely variably to suit the prevailing harvest conditions

­­KRONE adds new XCollect maize headers to the long-standing and well-proven EasyCollect series. These units have two independent processes for cutting and conveying the crops. responding to customer demands to deal with diverse harvest conditions around the world.

Three work widths

Three work widths: The new XCollect header is available in three work widths: 600-3: 6 m (8 rows), 750-3: 7.5 m (10 rows) and 900-3: 9 m (12 rows) The three-section headers work to the well-proven EasyCollect collector principle. The XCollect splits the action of cutting and feeding into two separate processes.

Cutting without counterblade

The stalks are cut by high-rpm sickle discs which rotate on massive bolts that connect them to the drive train. The cut stalks are then fed to the chopper unit by endless collectors above the discs which ensure a uniform lengthwise feed.

The central gearbox

The central gearbox: Operators can select one of two speeds to adjust the cutting frequency to the individual crop and harvest conditions.

Convenient guard

The ingenious guard for the maize header is an option that forms an integral part of the header. It moves automatically in and out of position when the header folds into road or work position. The operator just presses a button. No need to leave the cab. A very convenient solution that reduces changeover times and boosts productivity.

Harvesting without losses

Harvesting without losses: The sickle discs rotate on one plane, cutting the stalks without squeezing them. This technology minimizes vibration avoiding cob loss.

Everything under control

Everything under control: The well-proven collector feeds the stalks lengthwise to the chopping drum.It is this linear crop feed that enables precision chops and minimum overlengths.The variable collector speed is standard and ensures a consistently high quality of chop.

Fractured stubble

Fractured stubble: The high-speed sickle discs cut the stalks and defibrate the stubble for optimum breakdown.

Hovering over the ground

Hovering over the ground: The header has three sensor skids, one in the middle and two out on the ends, for optimum contouringand clean cuts in undulating fields and for clean forage.

Protected driveline

Protected driveline: Star ratchet clutches protect the sickle disc driveline from overload. Speed sensors scan the speeds of two discs and send potential overload information to the operator terminal. In addition to this, a friction lining on each disc offers additional protection.

Compact design

Compact design: The wings on the three-piece XCollect headers fold up into their transport position. This design leads to a 3 m (9'10") transport width for the XCollect 600-3 and 750-3 and a 3.29 m (10'9") width for the XCollect 900-3 which have optimised hydraulic rams that lift and lower the wings even faster.

The engines
  • 8- or 12-cylinder V-engines from Liebherr
  • Compact V design for transverse mounting
  • Final Tier 4 / Stage V compliant
  • 687-1156 hp maximum continuous engine power
  • High efficiency and quiet running

Advanced Common-Rail engine technology from Liebherr suggests superior outputs and fuel economy. The engines stand out for optimum torques, quiet running, superb fuel economy and high efficiencies.

All-out efficiency

All-out Efficiency: The engine is mounted sideways for optimum weight distribution. The power flows from the engine down a powerbelt and directly to the chopping and feeding components – a setup that ensures maximum efficiency.

As much power as necessary

As an option, operators can control the engine output with a touch of a button. Thanks to PowerSplit, they can operate the machine in the fuel-efficient Eco-Power mode whenever the full power is not needed. Vice versa, when the full power is needed, you simply switch to X-Power mode. The machine does this automatically and continuously variably depending on the current conditions. Another useful feature is the optional engine speed management which boosts efficiencies and fuel economy.

The driveline
    • Simple design
    • An extra-strong poly V-belt transmits engine power to the crop assemblies
    • Long service life
    • Separate drive for the intake rollers and the headers: Rollers and headers are reversible if the chopping
      drum suddenly stops
    • Separate and dependable driveline to the ground drive pump

    The transversely mounted engine allows the chopping drum and the crop accelerator to take engine power directly off a powerbelt. The engine also drives the pumps for the intake rollers and the header and also the pump for the ground drive and the assemblies. The power flows through a power take-off gearbox which uses a multiplate clutch to engage the assemblies.

    Power to the assemblies

    1 Engine mounted sideways
    2 Belt drive system
    3 Crop accelerator
    4 7-groove powerbelt to choppingdrum and accelerator
    5 7-groove powerbelt to corn conditioner
    6 Corn conditioner
    7 Chopping drum

    Power to the assemblies
    The chopping drum and the accelerator are powered by a powerbelt that provides a direct connection to the transversely mounted engine. The accelerator shaft drives the poly V-belt for the corn conditioner on the other side. Slackening the powerbelt to the chopping drum reverses the intake system and the header.

    Carefully designed

    Carefully designed: The header and intake system are driven by oil pumps. This concept allows operators to adjust the header and intake speeds steplessly – ideal for adjusting automatically to varying harvesting conditions.

    Optimum ground drive

    Optimum ground drive: Courtesy of a hydro pump that is flange-mounted on the main gearbox, Big X changes its ground speed infinitely variably. This is set either automatically or manually from the cab. The dependable powertrain guarantees maximum reliability.

    The running gear
      • Front-wheel drive is standard; four-wheel drive is an option
      • Powerful wheel motors from Bosch-Rexroth
      • Traction control with three travel modes
      • High ground clearance powertrain

      Wheel motors offer greater productivity and a higher level of automation and operator convenience. At the same time, this type of power train reduces maintenance and frees valuable space to fit a bigger and more powerful chopping assembly and move this further to the rear of the machine.


      4WD: BiG X 680/780/880 are available with hydraulic wheel motors on all four wheels as an option.

      Front-wheel drive

      Front-wheel drive: All BiG X machines have front-wheel drive as standard specification and have the wheel motors on the rear axle replaced by hubs.

      Planetary gearbox

      Planetary gearbox: The wheel drives are planetary gearboxes from Bosch-Rexroth. These offer the advantage of distributing the load to several planetary wheels which are compact and enable high torques.

      Good build

      Good build: The use of hydraulic wheel motors results in a very generous ground clearance and creates room for a larger diameter chopping drum and also leads to a more even weight distribution.

      Cushioned road travel

      Independent rear suspension: The steered axle on the BiG X comes with spring suspension as standard to ensure maximum operator comfort – both in the field and on the road.

      Traction control with three travel modes

      Traction control with three travel modes: The operator decides which of the three travel modes to use. The mode that reduces wheel slip is usually selected when the focus is on protecting the sward. Maize foraging usually takes place in a mode that admits more wheel slip or even with traction control deactivated.

      Kitted out perfectly
        • LED lights for best visibility at night
        • Optimum access to all service points
        • Large storage compartment for tools
        • Auto lubricator for more convenience

        In the heat of harvest operators often work into the night.To ensure best visibility BiG X is equipped with a comprehensive light kit that turns night into day. Service and maintenance are made easy too thanks to wide opening side panels, an opening engine compartment cover, removable plastic mudguards and a ladder that swings out of the way to give easy access to all service points.

        Day and night

        Day and night: BiG X can take up to 23 optional LED work lights which make field work safe and effective even during those night shifts.

        Moving the ladder out of the way

        Moving the ladder out of the way: The access to the cab is easily moved out of the way to give convenient access to all nearside service points.

        Illuminated access steps

        Illuminated access steps: LED lights on the steps make access to the cab at night a safe climb.

        Automatic lubrication

        Automatic lubrication: The auto lubricator and its large grease reservoir allow operators to spend less time servicing and maintaining the machine.

        Perfect access

        Easy access: The hoods open wide and the rear mudguards give perfect access to all assemblies. LEDs are in place for easy service and maintenance even in poor light conditions.

        Plenty of room

        Plenty of room: The space between the radiator screen and backplate of the crop accelerator provides excellent access to all elements in the crop flow system.

        Useful storage space

        Useful storage space: The nearside storage compartment at the rear boasts a pivoting table which accommodates the toolbox for convenient use.

        Easy to get at

        Easy to get at: The batteries are stored in the storage space on the right side of the machine where they are in easy access.

        The KRONE multiple tank concept
        • Seven different tank systems are available for maximum flexibility
        • Customers can opt for more fuel or more silage additives
        • Integral silage additive applicator with small/large dose rates as an option
        • Maximum fill capacities for long working days

        A system of several tanks allows customers to specify the reservoirs on the machine to their needs – fuel, silage additive and water tanks can be added and configured in as many as seven different arrangements that meet individual needs around the world.

        Storing enough liquid

        Storing enough liquid: For example you can add a 150l urea solution tank to the 1500l or 1100l diesel fuel tank and a 275l or 505l silage additive unit. BiG X features a flexible system of tanks that offers customised solutions for individual machine applications.

        Silage additive options

        Silage additive options: The dispenser for adding silage additives at high rates (0.5-7.5l/min) is integrated on the offside platform next to the cab. You can also use the nearside tank to store silage additives and increase the on-board volume to 505l. Two 13-litre silage additive dispenser for small dose rates (0.03-0.25l/min) can be integrated in the right wheel housing. In addition, it is possible to fit an external silage additive system. The silage additive can also be added relative to yields (option).

        The cabin
        • Extremely spacious and quiet
        • Maximum seating and operator comfort
        • 360° panoramic view
        • Optimum visibility from the raised cab (option)

        It takes a comfortable working place to stay fit and alert during those long working days. The spacious Silent Space cab offers such an ideal environment. Providing generous space to the operator and a passenger, it provides a fully air-conditioning and an absolutely functional working place. The exclusive LiftCab offers an unprecedented panoramic view from a height of up to 70 cm.

        Wider, quieter and brighter

        Wider, quieter and brighter: The wide and slim posted cab offers plenty of space and best view of the headers with wide working widths. The floor is insulated twice for reduced noise levels in the cab. Sixteen H9 lights provide superior illumination. A package of 23 LED work lights is available as an option.

        Sun blinds

        Sun blinds: Sun blinds are available for the side and rear windows to protect you from the sun and heat.

        Perfect visibility

        Perfect visibility: Now matter the conditions – rain or dust –BiG X operators always enjoy a clear view thanks to three optional wipers on the front window, two on the side windows and one on the rear window. All wipers have water jets.

        The cockpit

        The cockpit: All controls including the joystick, the screens and the terminals are designed to ergonomic standards and in easy reach from the operator seat.

        Ergonomic and convenient

        Ergonomic and convenient: The joystick feels pleasant in driver’s hand. With more than 20 functions programmed to it, the stick not only controls ground speed and direction of travel but also the header and spout.

        Keeping you informed

        Keeping you informed: The big 12-inch terminal with USB drive and a video input records all the machine data and displays them on the high-definition colour screen. The screen can show the footage from the reverse drive camera and the camera on the spout.

        The KRONE LiftCab

        Superb visibility: If the BiG X is specified with a LiftCab, it will be possible to raise the complete cab to any height up 70 cm. From the raised position operators enjoy a full overview of the tall stands and can easily monitor the filling processes. As another advantage, the raised cab increases the distance between the operator and the chopping assemblies thereby reducing the noise level at operator’s ear.

        A scissor lift for the cab

        A scissor lift for the cab: The cab is mounted on a scissor lift which raises and lowers the cabin to any position – infinitely variably and within a few seconds. The area under the cab floor is shielded to prevent of dirt and debris.

        At the touch of a button

        At the touch of a button: The LiftCab is activated from the seat at the touch of a button and is then raised hydraulically to the desired height.

        Less operator stress – more peace of mind

        Less operator stress – more peace of mind: Harvesting high-yielding maize crops, forager operators often are driving up towards an up to 4 m high wall of crop all day. The cab lift allows them to raise their seating position and enjoy a clear view of the field, reducing fatigue and helping them concentrate on the machine and spot any hazardous situations more easily.

        Everything in control

        Everything in control: High-sided trailers can be a problem for the forager operator who has to determine when the trailer is filled to capacity. In this situation, raising the cab by 70 cm is a big help. Whether the trailer is travelling alongside or behind the forager, the operator has always a clear view of the load area and can ensure optimum fills.

        Superb visibility

        If the BiG X is specified with a LiftCab, it will be possible to raise the complete cab to any height up 70 cm. From the raised position operators enjoy a full overview of the tall stands and can easily monitor the filling processes. As another advantage, the raised cab increases the distance between the operator and the chopping assemblies thereby reducing the noise level at operator’s ear.

        Operator Assist Systems
        • AutoScan enables operators to adapt the LOC relative to the current maturity of the crop
        • ConstantPower ensures optimum fuel economy at maximum throughput
        • XtraPower increases engine power on demand
        • EasyLoad supports operators in filling the harvest fleet trailers to capacity
        • RockProtect protects the forager from damage by stones
        • Steer with a joystick and enjoy maximum comfort in field work

        KRONE offers a range of different systems which help utilise our BiG X forage harvesters to their full potential and ease the strain on the operator. The electronic assist systems supply relevant data on the crop and provide reliable Information in extremely difficult position.

        Chopping as short as necessary

        Chopping as short as necessary: A photo-optical sensor in the middle of the maize header measures the maturity of the plant and automatically adjusts the length of cut. Green maize is cut to longer chops to get more structure and reduce effluent in the clamp. By comparison, dry and brittle maize is cut to short chops to increase compaction. This way, AutoScan eases the load on the operator and reduces fuel consumption by optimizing the length of cut.

        Lift speed

        Lift speed: After the operator selects the desired engine load, ConstantPower automatically matches the forward speed to the current stand and yields, easing the strain on the operator and improving fuel economy at maximum throughput. In combination with AutoScan, this system takes the overall quality of chop and machine performance to a whole new level.


        XtraPower: The innovative XtraPower technology allows owners of a BiG X 680 to book more engine power power (50 hp or 100 hp) from the new KRONE E-Solutions shops. Once this extra power is booked, it can be retrieved whenever it is necessary to boost throughputs temporarily. The machine must be in field mode and the chopping drum revolving to enable the feature. The XtraPower function is paused when no extra power is needed.

        More eyes watching

        The EasyLoad auto loading system in tandem with the camera-based 3D image analysis make it so much easier to fill low- or high-sided trailers running alongside or behind the harvester. The system controls the open/close spout and the rotate left/right functions and allows operators to select one of several filling strategies. Monitoring all functions from the in-cab screen, operators are more at ease.

        Intelligent precaution

        Intelligent precaution: The optional RockProtect system provides intelligent protection from damage by stones as it fully automatically halts the pre-compression rollers within milliseconds after a stone is detected. The sensitivity of the system is set by the operator.

        Steering via joystick

        Steering via joystick: You can also steer the BiG X from a joystick on the left armrest and enjoy a real boost in comfort. Using this joystick takes the hard work out of steering. You are seated in a more ergonomical position and both your arms rest on the armrests for relaxed and fatigue-free work. Thanks to proportional control, the steering is accurate and convenient.

        Metering moisture and nutrient levels

        The optional ­­KRONE NIR Control dual system records data on the moisture and nutrient levels (see table) of the crops when harvesting maize, grass and whole crop silage. This data can be recorded in the machine terminal and assigned to the harvested area. The optional ­­KRONE NIR Control dual system provides accurate measurements on crop moisture and nutrient levels. Another advantage: dual use of NIR sensor to determine nutrient levels in the VanControl dual system from Zunhammer.


        BiG X 680 · 780 · 880 · 980 · 1080 · 1180
        BiG X 680 BiG X 780 BiG X 880 BiG X 980 BiG X 1080 BiG X 1180
        Engine Liebherr D 9508 Liebherr D 9508 Liebherr D 9508 Liebherr D 9512 Liebherr D 9512 Liebherr D 9512 configure
        No. of cylinders 8 8 8 12 12 12 configure
        Engine capacity (l) 16.16 16.16 16.16 24.24 24.24 24.24 configure
        Continuous engine output (kw/hp) 505 / 687 570 / 775 660 / 898 720 / 979 790 / 1074 850 / 1156 configure
        Max. Continuous X-Power chopping output (kW / hp) 487 / 662 550 / 748 632 / 860 688 / 936 758 / 1031 818 / 1112 configure
        Max. Continuous Eco-Power chopping output (kW / hp) 368 / 500 368 / 500 441 / 600 441 / 600 441 / 600 441 / 600 configure
        configure configure configure configure configure configure

        The XXL forage harvesters from KRONE

        BiG X 680 · 780 · 880 · 980 · 1080 · 1180

        KRONE Landmaschinen

        KRONE Landmaschinen

        KRONE Landmaschinen


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