New CLAAS four-rotor swathers with working widths from 9.30 m to 15.00 m

CLAAS has launched the next-generation of four-rotor rakes with three completely redesigned models. The distinctive features of this new range include a low transport height, excellent ground-contour following by the rotors and ease of handling.

CLAAS has long been a leading supplier of rotary rakes and the revamped portfolio for 2022 features three newly updated four-rotor rakes with working widths from 9.30 metres up to 15 metres. Resigned from the ground up, these new models offer numerous innovative features and unique functions to make life easier for users and guarantee premium forage quality combined with high work rates.

Sturdy main frames, internally routed lines and patented telescopic arms

The backbone of the new LINER models is the innovative main frame made from high-strength steel with a geometry resembling that of a telescopic crane. The enormous cross-section combined with the trapezoid profile absorbs forces evenly to guarantee exceptional stability, as proven by extensive endurance tests performed both on the test rig and in the field. The control block, electronics module and hydraulic valves are located on the inside of the chassis, where they are well protected.

Unlike the previous models, the telescopic arms extend and retract by mean of a three stage patented system comprising of a C profile and slide rails, enabling very rapid adjustment of the working width. On the BUSINESS models the arms can be retracted individually and on the TREND models in pairs. All models provide generous ground clearance and a large clearance height.

Working widths can be adjusted by 3.40 to 4.90 m depending on the model, with working widths across the entire series ranging from 9.30 to 15 m. Swath widths can be adjusted from 1.30 – 2.20 m (LINER 4700), 1.40 – 2.40 m (LINER 4800) and 1.40 – 2.50 m (LINER 4900). On the BUSINESS models the swath width can be hydraulically adjusted using the control terminal, making it very easy for the driver.

On the TREND model, the swath width can be adjusted in transport position without tools using a spring-loaded lever and hole matrix.

All four rotors are driven mechanically and thus efficiently and directly by PTO. This increases the raking force by up to 50 percent compared with hydraulic drives. All rotors are fitted with individual friction clutches to protect against overload – they respond more smoothly than cam clutches and allow work to continue non-stop even during load peaks. The shaft speed in the two Y-gearboxes on the main frame has been reduced from 540 to 350 rpm to protect the drivetrain. The freewheel of the drive shaft is positioned directly inside the Y-gearbox, enabling the rotors to rotate freely in transport position.