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75HP Gearbox RW-610, Smooth 1-3/8 Input Shaft

This rotary cutter gearbox can provide a high powered operation to your 5 ft., 6 ft., and 7 ft. rotary cutters. It runs at 75 HP and has a smooth shaft that measures 1-3/8 in. The housing construction is extremely durable, constructed from ductile iron.
Product Overview

Gearboxes work to administer a transfer of speed and torque through their internal gear rotation, helping the overall performance of your rotary cutter. This RW-610 gearbox operates at 75 HP. The housing is constructed from durable ductile iron and the smooth input shaft measures 1-3/8 in. It has a beveled type of gear, with the gear ratio measuring 1:1.46. Designed for use with 5 ft., 6 ft., and 7 ft. rotary cutters, this rotary cutter gearbox has 4 bolt holes measuring 3/4 in. on an 8 in. bolt pattern for installment.


  • Gearbox RW-610
  • Horsepower: 75
  • Max RPM 540
  • Shaft can turn in both clockwise and counter clockwise directions
  • For 5 ft., 6 ft., and 7 ft. rotary cutters
  • Come with the castellated nut and the carrier hub for the stump jumper (if needed)
  • Housing construction: Ductile iron
  • Input shaft: 1-3/8 in.
  • Smooth shaft
  • Gear ratio: 1:1.46
  • Gear type: Bevel gear
  • Bolt holes: 4, with 3/4 in. diameter
  • Bolt pattern: 8 in.
  • Output shaft 2" 15 Spline
  • Output Shaft Splines are 2-1/2 inches long
  • Output Shaft Overall Length is 4.5 inches
  • For castle nut use ASC # 102241 - 1" Castle Nut
  • For blade hub use ASC #89755

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