China Standard Rotary Mower Gearbox with high quality

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 4 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.


Replaces OEM gearboxes on 4', 5' and some 6' rotary cutters by these manufacturers´╝î 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

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