The Chelsea 877 Series Power Take-Off, part number 877XBFJW-M5RF or 877XBFJWM5RF, is a 10-bolt, constant mesh PTO designed for Allison transmissions and high-torque continuous-duty applications. The output shaft is a 1-1/2" 10-spline with a 1410 companion flange. Shaft power delivery is rated at 64 HP at 500 RPM and 128 HP at 1,000 RPM. Continuous torque reaches 670 lb-ft (check application pages for confirmed ratings). The compact housing is designed to reduce clearance issues, and rotatable output flanges allow installation flexibility. Wet Spline Technology is integrated to extend service life of both the PTO and pump shaft. Typical markets include refuse, aerial, snow and ice, fire and rescue, and defense trucks. Call us to confirm proper fit for your application.
Features
10-bolt mounting for Allison transmission applications
Constant mesh shift type suited for continuous-duty, load-sense pump use
1-1/2" 10-spline output shaft with 1410 companion flange
Shaft power: 64 HP at 500 RPM, 128 HP at 1,000 RPM
Continuous torque up to 670 lb-ft (verify via application pages)
Wet Spline Technology and rotatable output flanges for extended life and installation flexibility
Tech Specs
- Mounting Type: 10-Bolt
- Transmission Manufacturer: Allison
- Shift Type: Constant Mesh
- Output Shaft Type: 1-1/2" 10-Spline with 1410 Companion Flange
- Intermittent Torque: 501+ lb-ft / 501+ Nm
- Continuous Torque: 670 lb-ft / 908 Nm (check application pages for confirmed 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)
- Lubrication: Pressure lube with Wet Spline Technology
Additional Information
Parts Manual: Chelsea 877 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
