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The front and rear mower utilize a hydropneumatic suspension system enabling them to follow ground contours. This simple system requires no springs to adjust the flotation system.
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 R990M Twin Rear-Mounted, a hydraulic breakaway system is standard equipment:
This flotation system ensures a perfect ground following, reducing soil compaction and providing an excellent cut. Crop stubble is preserved and regrowth is accelerated.
The simple monitor enables the operator to easily operate all of the hydraulic functions of the twin rear-mounted mower. The parts of the monitor include the following (arrows in the image above correspond to the alphanumeric values below):
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.
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.
The cutterbar has been developed to increase productivity through a significant downtime reduction with quick-change knives.
The amount of time spent on changing knives went from 3 minutes per knife to about 15 seconds with quick-change knives. This resulted in saving up to 40 minutes of maintenance time on each platform.
The R990M is fitted with eight disks.
All operators have to do is insert the special tool (attached to the mower) between the disk and spring blade, push it down and remove the knife.
This results in no lost parts during the changing of knives.
Large farms, machinery rings, and contractors need high-quality output and ease of serviceability:
To meet high-quality output, the cutterbar is an oil-immersed gear-driven cutting bed:
To meet serviceability, the cutting bed is lubricated for life:
Time needed to change a knife is less than 15 seconds. It is an efficient way to win up to 30 minutes of maintenance time.
The largest system is the R990M. This TMM system will have three 3.5 m (11.5 ft) mowers for a cutting width of 9.9 m (32.5 ft) per pass.
To prepare for transporting, the side curtains of the F350M Front-Mounted Mower are manually unlocked and folded into the transport position. This will reduce the overall width during transport. There is no longer a locking lever for the side curtains on the F350M mower. There is an additional locking mechanism for the front mowers to prevent the mower from swinging side to side in transport.
Once the front mower is in transport position, return to the cab of the tractor. To fold the rear mowers into the transport position, place dial indicator (4) in picture below on setting 1 and depress button 5 and tractor selective control valve (SCV).
The parts of the monitor include the following (arrows in the image above correspond to the alpha-numeric values below):
PTO speed | 540 rpm |
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1000 rpm 1-3/8 in. PTO | |
1000 rpm 1-3/4 in. PTO | |
Powerline type | |
Standard hitch | Clevis |
Optional hitch | Equal angle |
Hydraulic pressure required | 13,790 kPa 2,000 psi |
Cutterbar - cutting width | 2.4 m 8.1 ft |
Number of disks/knifes | 5 10 |
Transport width | 2.4 m 8.1 ft |
PTO speed | 540 rpm 1000 rpm |
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540 rpm PTO | 55-75 hp 41-56 kW |
1000 rpm 1-3/8 in. PTO | |
1000 rpm 1-3/4 in. PTO | |
Powerline type |
Tractor connection | 21 spline |
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Standard hitch | Clevis |
Optional hitch | Equal angle |
Hydraulic pressure required | 13,790 kPa 2,000 psi |
Hydraulic connections |
Type | John Deere |
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Cutting width | 2.4 m 8.1 ft |
Cutting height | 2.8-9.8 cm 1.1-3.8 in. |
Number of disks | 5 |
Number of knives | 10 |
Bolted knives | |
Disk speed | 2,650 rpm |
Knife tip speed | 307 km/h 191 mph |
Disk drive | Gear |
Lubrication | Hy-Gard oil |
Oil reservoir capacity | 5.7 L 6 U.S. qt |
Cutterbar oil check | Combination check, drain plug |
Cutterbar angle | |
Angle adjustment | Manual or hydraulic |
Angle range | 2-8 degree (angle) |
Cutterbar protection | ShearHub |
Adjustable gauge shoes | Yes |
Suspension system |
Width | 140 cm 55.2 in. |
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Diameter | 59.4 cm 23.4 in. |
Tines type | V-tines |
Number of tines | 33 |
Number of speeds | Two |
Drive | 3-V powerband belt and sheaves |
Conditioner hood | |
Wide spread |
Width | |
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Diameter | |
Type of material | |
Design | |
Speed | |
Drive | |
Windrow width |
Transport width | 2.4 m 8.1 ft |
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Overall length | |
Transport length | 6.2 m 20.6 ft |
Weight, roll conditioner | |
Weight, impeller conditioner | 2,027 kg 4,470 lb |
Standard tires | 11L-15 standard, 31x13.5L 15 optional 31x13.5L 15 optional |
Are wrenches required for adjusting? |
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Date collected | August 24, 2020 |
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