Replacement Rotary Cutter gearbox, 65hp rated, 1-3/8" smooth input shaft with 1/2" shear bolt hole and circlip groove, 1.57" X 12 tapered spline output shaft and 1:1.93 speed up ratio. These are new old stock gearboxes used on John Deere's  Frontier Line Rotary Cutters Models RC1048 and RC2048. Featuring a 1-3/8" diameter smooth input shaft with a 1/2" shear bolt hole and a front circlip groove to lock the PTO onto the shaft, and a 12 spline 1.57" diameter output shaft with a new flanged castle nut. These are a high speed (1:1.93 speed up) gearbox typically used on 48" cut machines or smaller. These gearboxes have been sitting is a warehouse for several years and have some dust, minor discoloration of the shafts and a few scratches but are otherwise new never installed gearboxes. John Deere's current price on this gearbox is near $400.00 plus shipping, buy now and save big!
These gearboxes can be used on many brands and models of machines. They share a similar mounting pattern and dimensions to the common 40hp gearbox just in a heavier package.
**Please note this gearbox is shipped dry and will require 16 ounces of 80 weight gear oil or heavier!*****
Gearbox Specifications:
1:1.93 Speed up ratio
1-3/8" Diameter smooth input shaft with 1/2" shear bolt hole and circlip groove
1.57" Diameter output shaft with 12 tapered splines
Mounting holes 4-3/4" on center adjacent hole to adjacent hole and 6-3/4" on diagonal
6-7/16" from Bottom of mounting flange to center line of input shaft
6-15/16" from center of gearbox to end of input shaft
High speed precision ball bearings