rotary cutter gearbox
(one) manufacturer new forty five horse- energy (far more electricity also avaiable) shearpin gearbox. This gearbox fits many diverse can make of 4′,5′ and some 6′ rotary cutters. I promote a whole lot of these containers each year for many different applications and have ALL Replacement Components for this box, but hopefully you won’t have to fear about that.
Below are the specs on the box:
*forty five horse energy gearbox
*Standard one-3/8″ easy enter shaft(exactly where the pto shaft hooks on). The pto shaft is held on by a 1/2 shearbolt.
*length of the input shaft out 
of the gearbox is three” prolonged
*bolt gap pattern for mounting is on the corners, four-three/four middle of gap to middle of hole. It will take a 5/8″ bolt.