The Chelsea 877 Series Power Take-Off, part number 877XBFJP-M5RS or 877XBFJPM5RS, is a 10-bolt, constant mesh PTO designed for Allison transmissions. The output shaft is a 1-1/2" 10-tooth spline with a 1410 companion flange. Continuous torque is rated up to 670 lb-ft (908 Nm) - check application pages for actual torque ratings for your installation. Shaft power at 500 RPM is 64 HP (48 kW), and at 1000 RPM is 128 HP (95 kW). Intermittent torque is rated at 501+ lb-ft. The compact housing reduces clearance conflicts, and two assembly arrangements are offered to maximize installation flexibility. Pressure lubrication is integrated into the PTO housing and requires a single hose connection. Call us to confirm proper fit for your application.
The 877 Series is suited for demanding, continuous-duty applications including refuse trucks, aerial units, snow and ice equipment, fire and rescue trucks, and oil and gas vehicles. Eight internal gear ratios cover a wide range of output speeds. Pressure lubrication is integrated into the PTO housing; one hose is required for installation. The series is listed by Parker Chelsea as obsolete - verify current availability and confirm the correct part number for your specific application before ordering.
Features
10-bolt mounting for Allison transmissions
Constant mesh shift type - suited for load-sense pump applications that run continuously
Output shaft: 1-1/2" 10-tooth spline with 1410 companion flange
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 and Wet Spline Technology extend PTO and pump shaft 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
- Output Power: 56+ HP (51+ kW)
- Shaft Power: 64 HP (48 kW) at 500 RPM; 128 HP (95 kW) at 1000 RPM
- Intermittent Torque: 501+ lb-ft (501+ Nm)
- Continuous Torque: 670 lb-ft (908 Nm) - check application pages for actual torque ratings
- Lubrication: Pressure lube with Wet Spline Technology
Additional Information
The 877 Series is suited for demanding, continuous-duty applications including refuse trucks, aerial units, snow and ice equipment, fire and rescue trucks, and oil and gas vehicles. Eight internal gear ratios cover a wide range of output speeds. Pressure lubrication is integrated into the PTO housing; one hose is required for installation. The series is listed by Parker Chelsea as obsolete - verify current availability and confirm the correct part number for your specific application before ordering.
Parts Manual: Chelsea 877 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
