2026 Kuhn Twin-Rotor Rotary Rakes GA 8131

The GA 8131, 8731+ and 9531+ central-delivery rakes, with high production and excellent raking cleanliness, creates the ideal windrow for forage chopping and making round or large square bales.

The GA 8131, 8731+ and 9531+ center-delivery twin-rotor rotary rakes are built on the popularity of the prior generation of KUHN’s twin-rotor rakes with the incorporation of the Masterdrive® GIII double-reduction gearbox. The main gearbox features the KUHN exclusive double reduction drive that not only provides consistent windrow formation in varying crop conditions, but also improves the power flow through the gearbox. These models have a lighter, but stronger construction with aluminum rake arm housings, large cam bearings and cam track designed to reduce peak loads. They maintain the KUHN double-bend tine arm design that offers clean raking and excellent capacity for consistent, fluffy windrows. The GA 8731+ has fixed tine arms. For operations where transport height is a concern, the GA 8131 and GA 9531+ have easily removable tine arms.

Features may include:

The patented KUHN Masterdrive® GIII double-reduction gearbox is designed for heavy crops, tough field conditions, and intensive use. Key components have been improved to build lighter, yet stronger rotors such as: aluminum alloy housings, optimized cam track minimizing force on the follower bearing, larger follower bearing diameter reducing rotation speed and pressure on the cam, tine arms with large-dimension bearings, sturdier pivoting tine support shaft, reinforced main shaft, and reinforced mounting of tine arms on tine holders. The Masterdrive GIII’s ability to move heavy crop, handle dry hay gently, and create a uniform windrow is unrivaled in the industry.

Double-curved tine arms are designed to form fluffy and straight windrows for superior raking quality at higher speeds. Fluffy windrows allow more air movement through the crop promoting fast and uniform drying.

High-quality raking is only possible if the rotors are able to follow undulating terrain smoothly and closely without damaging the crop stubble. The GA 8131, 8731+ and 9531+ features 3D rotor articulation for excellent field adaptation. The rotor arm and rotor are connected by a double link rod which enables the 3D articulation, rotors follow ground contours efficiently to help you harvest a cleaner crop.?

Easily adjust the working width hydraulically from the seat of the tractor.? The working width can be adjusted from 23’4” to 26’3” (7.1 – 8.0 m) on the GA 8131, 25’3” to 28’2” (7.7 – 8.6 m) on the GA 8731+ and an adjustable working width from 27’6’’ to 30’6’’ (8.4 – 9.3 m) on the GA 9531+.

On the GA 8731+ and 9531+, the KGA 04C control box comes standard. The control box manages all the functions such as rotor working height adjustment, individual rotor lift (if machine is equipped with these options), rotor lift at headlands, working and windrow width adjustments. Simplified folding and unfolding between transportation and field working positions is also controlled from the control box for operator convenience.

Tine height adjustments are made on each rotor with a simple hand crank. Each rotor on the GA 8131 comes standard with a set of front fixed wheels with two fixed axles at the back. The GA 8731+ features a set of front caster wheels with two fixed axles at the back of the rotor to help follow changing ground contours to avoid tines from striking the ground. The GA 9531+ comes standard with a set of front caster wheels and a set of tandem axles in the rear, ideal for traveling over pivot tracks.