Rugged rotary cutter gearbox delivers dependable power for large cutters with a 1:1.47 ratio, 540 RPM input and 794 RPM output, 446 Nm torque, four bolt mounting, engineered for 5-foot and larger machines

Rotary Cutter Gearbox for 1-3/8 inch input shaft
✔️ 1:1.47 speed ratio, 540 input RPM, 794 output RPM, 446 Nm torque

The beefed up rotary cutter gearbox is a rugged drive unit designed for large-diameter rotary cutters, such as 5-foot and bigger machines. It uses a four-bolt mounting pattern and a 1-3/8 inch (34.9 mm) 6-spline input with a 12-spline output hub to fit standard cutter assemblies. This gearbox ships dry and requires 16 oz of 80-90W gear lubricant before operation.

✅ Gear ratio 1:1.47 speed up for 5' and larger diameter rotary cutters
✅ Input shaft 1-3/8 in (34.9 mm), 6-spline input; 12-spline output hub
✅ 540 RPM input; 794 RPM output; max torque 446 Nm; CCW rotation
✅ Four-bolt mounting with blade carrier nut and cotter pin
✅ Includes stump jumper / flywheel 12-spline hub
✅ Ships dry; requires 16 oz of 80-90W gear lube

💡 What is a rotary cutter gearbox used for in large-diameter cutting applications? This handy unit adds torque and controls speed for heavy-duty field work. - increases torque for heavy-duty cutting on large-diameter cutters - compatible with 1-3/8 in (34.9 mm) 6-spline input and 12-spline output hubs - delivers up to 794 RPM output from 540 RPM input for higher cutting power