2025 John Deere Rear-Mount Mower-Conditioners R870R

2025 John Deere Rear-Mount Mower-Conditioners R870R

• Use front hitch for maximum productivity

• High-speed rotary disc cutterbar for cutting in tough conditions

• Conditioning and swath delivery

• Windrowing solutions to match any needs

Features may include:

• Cutterbar flotation to match ground conditions

• The front and rear mower-conditioners utilize a hydropneumatic suspension system enabling them to follow ground contours. This simple system requires no springs to adjust the flotation system.

• Double-rod hydraulic cylinders are used to both lift the cutting platform and provide flotation.

• One side of the cylinders is linked to an accumulator to provide flotation.

• The other side of the cylinder is used for lifting the cutting platform for transport or going over headlands.

• Suspension system enables the cutting platform to follow ground contours at productive cutting speeds.

• Flotation is adjusted by opening a valve and using the tractor selective control valve (SCV) lever to alter pressure according to field profile. An easy-to-read gauge enables the operator to confirm that the pressure is within the recommended range. Ground pressure remains consistent even when cutting on uneven ground.

• To improve driver comfort, hydraulic overlapping is available with +/- 20 cm (+/- 7.9 in.) if needed, actuated from the monitor in the cab. Ground contour following will be + 24 cm (+ 9.4 in.) upward and – 22.5 cm (- 8.9 in.) downward.

• Ground clearance when raising the platform on headlands is approximately 40 cm (16 in.).

• Cylinders work independently to enable the cutting platform to pivot from side to side to give clean cutting even on uneven ground. Angular range:

• On the R870R, R950R, and R990R Twin Rear-Mounted Conditioners, a hydraulic breakaway system is standard equipment:

• Should an obstacle be encountered, the cutting platform swings back and lifts up to pass over the obstacle.

• This reduces the potential damage to the cutting and conditioning unit and decreases maintenance costs.

• For productivity and ease of use, the machine automatically resets on the go.

• This flotation system ensures a perfect ground following, reducing soil compaction and providing an excellent cut. Crop stubble is preserved and regrowth is accelerated.

• Rotary disk cutterbar for cutting in tough conditions

• Power is transmitted from the 1000 rpm tractor with 44.4-mm (1-3/4-in.) power take-off (PTO) through a central gearcase to the twin rear-mounted cutterbars.

• Each cutterbar is protected by a slip clutch and overrunning clutch

• The cutterbar is securely mounted within the frame for strength and durability

• Power is transmitted to the rotary disks through fully enclosed gears, running in oil, for quiet, smooth, reliable operation

• The high-speed rotary disks cut in the toughest conditions. The disks rotate at 2986 rpm.

• Low-profile design enables cutting close to the ground at a flat angle helping prevent damage to the disks and knives

• Cutting height is adjusted by changing cutting angle

• Pinion gear is easily removed from the top of the cutterbar for service

• Idler gears can be removed from access area after removal of pinion gear

• Groove on quill shaft, designed to shear upon severe impact with a foreign object, reduces the possibility of damage to the internal components of the cutterbar.