55 Gearbox Smooth Input Shaft

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-300 gearbox operates at 55 HP. The housing is constructed from durable ductile iron and the smooth input shaft measures 1-3/8 inches. It has a beveled type of gear, with the gear ratio measuring 1:1.47. Designed for use with 4 foot, 5 foot, and 6 foot rotary cutters, this rotary cutter gearbox has 4 bolt holes measuring 5/8 inch on a 6-3/4 inch bolt circle for installment.

Specifications

• Fits many brands of mowers
• Gearbox RW-510
• Horsepower: 55
• Max RPM 540
• Turns both clockwise or counterclockwise
• For 4 ft., 5 ft., and 6 ft. rotary cutters
• Housing construction: Ductile iron
• Mounting Base Thickness is 3/8 inch
• 9 inches tall
• Distance between mounting holes is 4-3/4 inch
• Smooth input shaft: 1-3/8 in diameter X 3-7/8 inches long
• Output shaft 2 inch diameter X 15 Spline being 4-1/2 inch length
• Spline length is 2-5/8 inches 
• Gear ratio: 1:1.47
• Gear type: Bevel gear
• Bolt pattern: (4) 5/8 inch diameter holes on a 6-3/4 inch bolt circle
  
• Uses 90 Weight Gear Oil (Not included)
• The input shaft snap ring comes with this and is located in the plastic tube attached to the shaft
• Rotation is CW or CCW with no modifications; It also comes with the castellated  nut and the carrier hub for the stump jumper (if needed)
  
• For castle nut use ASC # 102241 - 1" Castle Nut
• For output shaft gearbox seal RW300 use # 89757
• For input shaft gearbox seal RW300 use #89756
• For blade hub use #89754
• Replaces Kodiak KDK03-0012 and other brands.
• Made to fit ASC # 121986, ASC # 121620, and ASC # 121987 Rotary Mowers
• For replacement outer input shaft snap ring, use #135429

Check out our selection of Rotary Mower Parts & Gearboxes