Exceptionally high density and unmatched lifetime

KUHN FB 3100 Series fixed chamber balers are top of the league. The balers are designed to provide you the highest density and capacity in the toughest conditions across the world.


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At the top of the league, we offer the KUHN FB 3130 and FB 3135. These fixed chamber round balers are designed to provide you the highest capacity in the toughest conditions across the world. With two models and a wide range of intake options, there’s a baler to suit your operation. Choose between a non-cutting OPTIFEED rotor, a 14-knife OPTICUT cutting rotor or a 23-knife OPTICUT cutting rotor. 18 POWERTRACK rollers provide exceptionally high density and reliable bale rotation in all crop conditions. The net binder with active stretch technology ensures a firm bale shape with constant net tension throughout the entire binding cycle. The FB 3135 is also available with the KUHN TWIN-reel film binding system. You can conveniently control each of these balers from the comfort of your tractor seat with the in-cab terminals. The KUHN FB 3135 is fully ISOBUS compatible.

Your Benefits

An intake system that can handle every crop condition

Optimal crop pick up

The cam-steered pick-up on the FB 3100 Series maximizes the full capacity of the machine. With a working width of 230 cm, the machine is capable of working in all windrows and will not let you down, even in the toughest conditions. Straight pick-up tines help release the crop and reduce crop wrapping. Camless-shaped crop guides result in an efficient and gentle pick-up. A cam track pulls the tines straight down in the rearward position to avoid wrapping, making this the only hybrid pick-up on the market today. Therewith, it can handle every kind of crop, from long straw up to the shortest autumn silage or crops with fragaile leafs. The pick-up features standard pendulum frame and optional pivoting pick-up wheels to allow the pick-up to adapt to changing field conditions.
To better meet your operation’s specific needs, there are two intake options available. Choose one of our INTEGRAL ROTORS – the non-cutting OPTIFEED rotor or the 14- or 23-knife OPTICUT cutting rotor.


Available across the entire FB 3100 range is our INTEGRAL ROTOR technology found on OPTIFEED and OPTICUT models. This simple, maintenance-free intake system guarantees an enormous throughput capacity at all times. The short distance between rotor and pick-up tines maintains consistent crop flow. The design of this force-fed intake makes higher forward speeds possible for increased productivity and reduces crop damage. The INTEGRAL ROTOR is provided with rotor tines made out of Hardox® wear plates. Hardox combines extreme hardness and toughness to reduce rotor tine wear.

Non-cutting versions

The OPTIFEED rotor design, with double feeding tines and integrated augers, helps even out the swath by spreading the crop evenly for consistent bales every time. The double feeding tine design offers optimal grip on the crop.

DROPFLOOR & Rotor disengagement

The floor and knives can be hydraulically lowered from the comfort of the tractor cab in the case of a rotor blockage. After the blockage is cleared, they can easily be brought back into work position.
In extreme circumstances, double security is provided by a standard rotor disengagement
clutch. This will enable the operator to bind and eject the bale from the chamber before continuing.
Both the rotor disengagement and DROPFLOOR technology ensure a fast clearance in case of a blockage and enables you to quickly continue your baling operation.

Cutting: OPTICUT Rotors

KUHN OPTICUT (OC) cutting rotors are designed for unlimited intake capacity and excellent cutting quality. OC cutting rotors, with patented elliptical-shaped rotor tines, are acknowledged by users as one of the best cutting systems on the market. The silage is guided and drawn down to the knives from an early stage which improves flow and cutting performance while requiring minimal force, this also prevents unwanted blockages.
The INTEGRAL ROTOR, with the 14-knife OPTICUT system, is designed to even out the windrow and force-feed the crop into the baler for maximum throughput. The 14-knife OPTICUT cutting system provides a theoretical cutting length of 70 mm. Each single knife is spring-protected against damage from foreign objects. With GROUP SELECTION (FB 3135), the operator can choose to have 0, 4, 7, 7, or 14 knives in operation.
The INTEGRAL ROTOR, with the 23-knife OPTICUT system, has the benefits of intensive cutting and mechanical protection. The 23-knife OPTICUT system provides a theoretical cutting length of 70mm. Each single knife is spring-protected against damage from foreign objects. With GROUP SELECTION (FB 3135), the operator can choose to have 0, 7, 11, 12, or 23 knives in operation.
GROUP SELECTION results in easy knife changing and an improved driver comfort.

Consistent, firm round bales


Producing silage and hay bales each season can be tough and well thought-out designs are demanded. To compress the crop into bales with a consistent size and density, the baling process has to be as effective as possible while being gentle on the crop. The POWERTRACK rollers start to rotate the core of the bale as fast as possible to ensure optimal compression.

Fast, perfect bale formation

The redesigned heart of the balers consists of 18 POWERTRACK rollers. The
rollers have symmetrical profiles which generate exceptionally high density and reliable bale
rotation in all crop conditions. All rollers are made of 3,2 mm thick high-strength steel
which are roll-formed and laser-welded out of 1 metal sheet for optimal durability. In
addition, a minimum of space between the rollers reduces crop loss.

Fast tailgate detection

The tailgate opens and closes in ≥ 4,5 seconds (60 l/min oil flow) thanks to its stable design with torsion pipes. Strong hydraulic tailgate cylinders keep the tailgate closed and ensure a consistent bale size with maximum bale density. These cylinders act as a hydraulic lock and prevent the baler from overloading (POWER LOCK). Highly accurate tailgate sensors monitor the bale growth as from 80%. You are notified about the baling process via the bale growth indicator. In addition, the FB 3135 allows you to guide the baler according to the left-right bale chamber filling indication displayed on the terminal for extra operator comfort. This results in optimum bale shape and density.

Highest density and improved lifetime

The rugged driveline with new gearbox design consists of a split driveline. The bale chamber drive on one side and rotor plus pick-up drive on the other ensures a smooth operation and an even power transfer. The main drive and bale roller chains are made up of high-strength 20B (1¼) chains with a standard Beka-Max continious chain oiling system, which contributes to an improved lifetime.
Thanks to the 50 mm double-raced bearings on the drive side main load points, trouble-free baling in heavy conditions is guaranteed. All bearings have central greasing, a Beka-Max
automatic bearing greasing system is optional. The rollers have built-in scrapers to push the material out and away from the bearings.
These design features result in the highest bale density in its segment.

Secure binding solutions

Firm bale shape

One of the final steps in creating the perfect bale is the binding. It is one of the most crucial steps! The less time required to bind the bale, the higher the baling operation output. KUHN binding solutions guarantee reliable and secure net binding.
All FB models can be equipped with a combination of twine and net binding.

Excellent net spreading

The net binder with active stretch technology ensures a firm bale shape with constant net tension throughout the entire binding cycle. The net is fed into the front of the bale chamber to ensure it is taken by the bale immediately. A second net roll storage enables the operator to carry a sufficient net supply for long working days. Changing the net roll can be done easily whilst standing safely on the ground.
KUHN’s innovative design maintains constant net tension during the binding process. The net wrap system runs at 93% of the bale’s rotational speed to be able to stretch the net without breaking it. The pre-stretched net results in a bale that will hold its density. The net binding system spreads the net to the corners of the bale to prevent air pockets once the bale is wrapped, which will preserve the forage quality for longer.

Twine binding

When using the double twine binding system, the binding cycle time is reduced to a minimum. In the twine binding cycle, both of the twines start at the bale edge and overlap before moving to the centre of the bale. In the centre of the bale, they overlap again. This ensures that the twines are fixed and that there are no loose ends.


Technical characteristics

FB 3135FB 3130
Bale chamber dimensions (width x diameter) (cm)122X125122X125
Bale chamber18 POWERTRACK rollers18 POWERTRACK rollers
Transport width (cm)251 on 400 / 60 x 22.5 wheels 272 on 500 / 45 x 22.5 wheels 278 on 560 / 45 x 22.5 wheels 292 on 600 / 40 x 22.5 wheels251 on 400 / 60 x 22.5 wheels 272 on 500 / 45 x 22.5 wheels 278 on 560 / 45 x 22.5 wheels 292 on 600 / 40 x 22.5 wheels
Transport height (cm)246246
Transport length (cm)413413
ControlISOBUS certified balerVT 30 terminal
Teardrop plateas standardas standard
Automatic chain oiling systemas standard (BEKA-MAX)as standard (BEKA-MAX)
Pick-up width (cm)230230
Number of pick-up tine bars55
Pick-up crop rolleras standardas standard
DROPFLOOR technologyas standard OC14: 0/4/7/7/14 OC23: 0/7/11/12/23as standard
Independent knife / DROPFLOOR selectionin-cab controlled via terminal-
Automatic knife cleaningincluded in automate (optional)-
Theoretical cutting length (mm)OC14: 70 OC23: 45OC14: 70
Knife protectionindividual spring protected OC14 individual spring protected
Rotor disengagementhydraulic hydraulic
Binding systemnet binding as standardnet binding as standard
Net storage1 +1 storage1 +1 storage
Twine storage2 + 2 storage with optional twine binding system2 + 2 storage with optional twine binding system
Baling pressure settingin-cab controlled via terminalon machine controlled
Fast tailgate detectionas standard (from 80%) with left-right bale chamber filling indicationas standard (from 80%)
Fully automatic tailgate and automatic DEBLOCK including LS equipment (AUTOMATE) (Bale kicker is mandatory)Optional-
Minimum PTO power requirement kW(hp)65 (88)65 (88)
PTO speed (min-1)540540
Minimum required tractor hydraulic connections1 single acting and 2 double acting valves1 single and 2 double acting valves
Oil flow and pressure required40-60 l/min at 180 bar-
Wide angle PTO shaftas standard with cam clutchas standard with cam clutch
Drawbarstandard height adjustable: upper and lower attachment possibilities standard height adjustable: upper and lower attachment possibilities
Road lightsas standardas standard
Weight min - max (kg)>3300>3300