A heavy-duty, John Deere-designed and John Deere-built gearbox transfers power to the Kevlar® drive belts through cross shafts with intermediate bearing supports:
The transmission is bolted directly to the frame.
This gearbox has a constant-duty rating of 180 hp and a maximum rating of 270 hp.
It carries a limited two-year warranty.
Kevlar is a U.S.-registered trademark of E.I. du Pont de Nemours and Company.
The 520 Flail Shredder can be ordered with two different types of tractor hookup, drawn or integral, depending on preference. An integral flail shredder allows making a very tight turning radius, even when the tractor is equipped with dual wheels.
Optional wheel supports eliminate the uncut middle strip in crops like wheat, oats, and barley. The shredder can be pulled at an angle, offsetting the rotors and cutting evenly across the entire width of the machine.
Designed for superior rotor strength, the square rotor, together with the opposite-mounted flails, provides a machine with less potential vibration, increasing the life of rotor bearings and belts.
Since 248 knives are mounted on the full length of the rotors on the main cutterbar, with 2.5 cm (1 in.) of overlap, a stalk won't get missed. This is a significant improvement over the 216 knives mounted on the previous 220 Flail Shredder.
Front rubber deflectors keep debris and other materials under the shredder and away from the tractor and operator. Because they are made out of rubber, they will not dent or rust.
Hard-to-reach center bearings can be serviced with the conveniently located grease fittings at the rear of the machine:
There is no need for the operator to crawl under the machine to perform this service task, thus increasing the probability of the job being performed and completed safely.
Cutting capacity
Cutting width
6.1 m 20 ft
Cutting height
7.6-25.4 cm 3-10 in.
Dimensions
Weight
2,268 kg 5,000 lb
Transport length
Endwise; drawn 7.34 m 24.08 ft Integral 2.39 m 7.83 ft
Transport width
Endwise; drawn 2.39 m 7.83 ft Integral 6.48 m 21.25 ft
Drivetrain
Belts
Kevlar, 3/5V heavy-duty
PTO drivelines
44.5 and 35.1 mm 1.75 and 1.38 in.
Knives
Number of knives
248 side slicer (124 pairs)
Knife mounting system
Bracket and D-ring
Type
Alloy steel, hardened with vanadium carbide and reversible
Tip speed
224 km/h 139 mph
Knives overlap
27.18 mm 1.07 in.
Knife dimensions
7.87 x 63.5 mm 0.31 x 2.5 in.
Mainframe
Hitch
Drawn or Integral (Cat. 3 or 3N Quik-Coupler required)