The Chelsea 877 Series Power Take-Off, part number 877XFFJP-M5RY or 877XFFJPM5RY, is a 10-bolt, constant mesh PTO designed for Allison transmissions and built for high-torque, continuous-duty work cycles. The output shaft is a 1-1/2" 10-spline configuration with a 1410 companion flange. Continuous torque rating reaches 670 lb-ft (check application pages for actual torque ratings for your installation). Shaft power measures 64 HP at 500 RPM and 128 HP at 1000 RPM. A compact housing reduces clearance constraints, and the rotatable output flange offers two assembly arrangements to maximize installation clearance. Wet Spline Technology is integrated to extend PTO and pump shaft service life. Typical markets include refuse, aerial, snow and ice, and defense trucks. Call us to confirm proper fit for your application.
Features
10-bolt mounting for Allison transmissions
Constant mesh shift type, rated for continuous operation without de-rating
Output shaft: 1-1/2" 10-spline with 1410 companion flange
Continuous torque up to 670 lb-ft; shaft power 64 HP at 500 RPM, 128 HP at 1000 RPM
Compact housing height reduces installation clearance issues
Wet Spline Technology helps extend 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-Spline with 1410 Companion Flange
- Intermittent Torque: 501+ lb-ft / 501+ Nm
- Continuous Torque: 670 lb-ft / 908 Nm (check application pages for actual torque ratings)
- 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
- Continuous Operation: Yes
Additional Information
Parts Manual: Chelsea 877 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
