The Chelsea 877 Series Power Take-Off, part number 877XFFJP-M5XV or 877XFFJPM5XV, is a constant-mesh, 10-bolt PTO engineered for Allison transmissions. The output shaft is a 1-1/2" 10-tooth spline with a 1410 companion flange for driveline hookup. Continuous torque rating reaches 670 lb-ft (908 Nm); intermittent torque is rated at 501+ lb-ft. Shaft power is 64 HP at 500 RPM and 128 HP at 1000 RPM. The compact housing is designed to reduce clearance problems during installation, and rotatable output flanges give additional flexibility when clearance is tight. Wet Spline Technology is incorporated to extend service life of the PTO and connected pump shaft. Suited for refuse, aerial, snow and ice, fire and rescue, oil and gas, and defense truck applications. Call us to confirm proper fit for your chassis and transmission configuration.
The 877 Series is part of Chelsea's heavy-duty PTO family designed for demanding continuous-duty cycles. Two assembly arrangements are available within the series to maximize installation clearance. Pressure lubrication is integrated into the PTO housing and requires a single hose connection; the hose is included with the unit. The series offers eight internal gear ratios, providing a wide range of output speeds to match application requirements. Common vocational fits include refuse trucks, aerial and fire and rescue trucks, snow and ice equipment, oil and gas vehicles, and defense platforms. Note: Parker Chelsea lists the 877 Series as obsolete. Contact Pro Gear and Transmission to confirm current availability and to verify this part number fits your specific application.
Features
10-bolt mounting for Allison transmission applications
Constant-mesh shift type, suitable for continuous-operation applications such as load-sense pump systems
Output: 1-1/2" 10-tooth spline with 1410 companion flange for driveline connection
Continuous torque up to 670 lb-ft (908 Nm); intermittent torque 501+ lb-ft
Shaft power: 64 HP at 500 RPM, 128 HP at 1000 RPM
Compact housing height reduces clearance issues; rotatable output flanges add installation flexibility
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
- Continuous Torque: 670 lb-ft / 908 Nm (check application pages for actual torque ratings)
- Intermittent Torque: 501+ lb-ft / 501+ Nm
- Output Power: 56+ HP / 51+ kW
- Shaft Power: 64 HP at 500 RPM, 128 HP at 1000 RPM (48 kW at 500 RPM, 95 kW at 1000 RPM)
Additional Information
The 877 Series is part of Chelsea's heavy-duty PTO family designed for demanding continuous-duty cycles. Two assembly arrangements are available within the series to maximize installation clearance. Pressure lubrication is integrated into the PTO housing and requires a single hose connection; the hose is included with the unit. The series offers eight internal gear ratios, providing a wide range of output speeds to match application requirements. Common vocational fits include refuse trucks, aerial and fire and rescue trucks, snow and ice equipment, oil and gas vehicles, and defense platforms. Note: Parker Chelsea lists the 877 Series as obsolete. Contact Pro Gear and Transmission to confirm current availability and to verify this part number fits your specific application.
