Rotary Mower Gearbox

40 HP Rotary cutter gearbox with 1-3/8″ smooth input shaft and a gear ratio of 1:1.47. Cast iron housing is sealed to protect the gears and bearings. The mounting plate has four bolt holes spaced 4.75″ square. Ships without oil (16 oz of 80-90 W)

Gearbox has a piloted flange bottom to fit in a 5-1/4″ pilot hole in the mower/cutter deck.

Application:

Replaces OEM gearboxes on 4′, 5′ and some 6′ rotary cutters by these manufacturers， Please check measurements for proper fitment.

Technical Information:

Bolt Pattern:

4-3/4″ Square with holes for 5/8″ bolt

Pilot Hole Size: 5-1/4″

Input Shaft:

1-3/8″ Smooth with 1/2 Shear-hole

Output Shaft: 1-9/16″ Tapered 12-spline

Input Power Max: 40 HP

Input Speed: 540/1000 RPM

Shaft Rotation: CCW to CW with 1:1.47 Ratio