The Chelsea 877 Series Power Take-Off, part number 877XEFJW-M5RZ or 877XEFJWM5RZ, is a constant-mesh, 10-bolt PTO engineered for Allison transmissions with demanding, high-torque workloads. The output shaft is a 1-1/2" 10-tooth spline with a 1410 companion flange. Continuous torque rating reaches 670 lb-ft (check application pages for actual torque ratings for your specific installation). Shaft power is rated at 64 HP at 500 RPM and 128 HP at 1,000 RPM. Two assembly arrangements are available to maximize installation clearance. Pressure lubrication is integrated into the housing, requiring only a single hose connection. Typical applications include refuse trucks, aerial units, snow and ice equipment, and fire and rescue 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: 1-1/2" 10-tooth spline with 1410 series companion flange
Continuous torque up to 670 lb-ft; shaft power 64 HP at 500 RPM, 128 HP at 1,000 RPM
Compact housing height reduces clearance issues; two assembly arrangements available
Wet Spline Technology to 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 Series 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 1,000 RPM (48 kW at 500 RPM; 95 kW at 1,000 RPM)
- Lubrication: Pressure lube with Wet Spline Technology
- 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.
