The Chelsea 877XBFJW-M5RS or 877XBFJWM5RS is a 10-bolt, constant mesh power take-off built for Allison transmission applications with demanding, continuous-duty workloads. Output is a 1-1/2" 10-tooth spline shaft with a 1410 companion flange. Continuous torque is rated at 670 lb-ft (908 Nm); intermittent torque exceeds 501 lb-ft. Shaft power reaches 128 HP at 1,000 RPM and 64 HP at 500 RPM. The 877 Series is engineered for aerial, refuse, snow and ice, and fire and rescue truck applications. Wet Spline Technology helps extend both PTO and pump shaft service life. Call Pro Gear and Transmission to confirm proper fit for your specific vehicle and transmission configuration.
The Chelsea 877 Series is designed for high-torque, continuous-operation requirements across aerial, refuse, snow and ice, fire and rescue, and defense truck applications. Two assembly arrangements are offered to maximize installation clearance. Pressure lubrication is integrated directly into the PTO housing, requiring only one hose connection for a simplified installation setup. Eight internal gear ratios provide a wide range of output speeds to suit virtually all hydraulic pump application requirements. Rotatable output flange options are available on select configurations.
Features
10-bolt mounting for Allison transmission applications
Constant mesh shift type, rated for continuous-duty operation
670 lb-ft (908 Nm) continuous torque rating; 501+ lb-ft intermittent torque
1-1/2" 10-tooth spline output shaft with 1410 companion flange
Compact housing height reduces installation clearance issues
Wet Spline Technology extends PTO and pump shaft service life
Tech Specs
- Mounting Type: 10-Bolt
- Transmission Manufacturer: Allison
- Shift Type: Constant Mesh
- Output Shaft Type: 1-1/2" 10-Tooth Spline with 1410 Companion Flange
- Intermittent Torque: 501+ lb-ft, 501+ Nm
- Continuous Torque: 670 lb-ft, 908 Nm (check application pages for actual torque ratings)
- Output Power: 56+ HP, 51+ kW
- Shaft Power: 64 HP at 500 RPM, 128 HP at 1,000 RPM (48 kW at 500 RPM, 95 kW at 1,000 RPM)
Additional Information
The Chelsea 877 Series is designed for high-torque, continuous-operation requirements across aerial, refuse, snow and ice, fire and rescue, and defense truck applications. Two assembly arrangements are offered to maximize installation clearance. Pressure lubrication is integrated directly into the PTO housing, requiring only one hose connection for a simplified installation setup. Eight internal gear ratios provide a wide range of output speeds to suit virtually all hydraulic pump application requirements. Rotatable output flange options are available on select configurations.
