The Chelsea 877 Series Power Take-Off, part number 877XBFJW-M3RF or 877XBFJWM3RF, is a constant-mesh, 10-bolt PTO engineered for Allison transmissions running high-torque, continuous-duty cycles. Output is a 1-1/2" 10-spline shaft with a 1410 companion flange. Continuous torque capacity reaches 670 lb-ft (check application pages for actual torque ratings for your installation). Shaft power is rated at 64 HP at 500 RPM and 128 HP at 1,000 RPM. Compact housing geometry reduces underhood clearance conflicts, and rotatable output flanges provide two assembly arrangements to suit tight installations. Wet Spline Technology is integrated to extend PTO and pump shaft service life. Typical markets include refuse, aerial, snow and ice, fire and rescue, and oil and gas applications. Call us to confirm proper fit for your specific transmission and chassis configuration.
Features
Constant-mesh shift type, suited for load-sense pump applications that run without disengaging
10-bolt mounting for Allison transmission applications
Output shaft: 1-1/2" 10-spline with 1410 companion flange
Continuous torque up to 670 lb-ft; 128 HP at 1,000 RPM shaft power
Compact housing height reduces underhood clearance conflicts
Wet Spline Technology extends PTO and pump shaft service life
Tech Specs
- Mounting Type: 10-Bolt
- Shift Type: Constant Mesh
- Transmission Manufacturer: Allison
- Output Shaft Type: 1-1/2" 10-Spline with 1410 Companion Flange
- Output Power: 56+ HP, 51+ kW
- Shaft Power: 64 HP (500 RPM), 128 HP (1,000 RPM) / 48 kW (500 RPM), 95 kW (1,000 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
Parts Manual: Chelsea 877 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
