The Chelsea 877 Series Power Take-Off, part number 877XBFJP-M5RZ or 877XBFJPM5RZ, is a 10-bolt constant mesh PTO designed for Allison transmissions. Output is through a 1410 companion flange paired with a 1-1/2" 10-spline shaft. The 877 Series carries a continuous torque rating of up to 670 lb-ft (908 Nm) and intermittent torque above 501 lb-ft, with shaft power of 64 HP at 500 RPM and 128 HP at 1000 RPM. Constant mesh engagement makes this unit well suited to load-sense pump applications where disengagement is not required. A compact housing limits clearance conflicts during installation, and rotatable output flanges give additional positioning flexibility. Pressure lubrication is integrated into the housing, simplifying installation to a single hose connection. A genuine Chelsea part from Pro Gear and Transmission. Call us to confirm proper fit for your application.
Features
10-bolt mounting for Allison transmission applications
Constant mesh shift type, suited to load-sense pump setups requiring continuous engagement
1410 companion flange output with 1-1/2" 10-spline shaft
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 with rotatable output flanges and Wet Spline Technology to extend PTO and pump shaft service life
Tech Specs
- Mounting Type: 10-Bolt
- Transmission Manufacturer: Allison
- Shift Type: Constant Mesh
- Output Shaft Type: 1410 Companion Flange, 1-1/2" 10-Spline
- Continuous Torque: 670 lb-ft / 908 Nm (verify actual rating on application pages)
- 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
Parts Manual: Chelsea 877 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
