The Chelsea 877XALNP-M5RZ or 877XALNPM5RZ is a 877 Series Power Take-Off designed for 10-bolt Allison transmission applications with high-torque, continuous-duty demands. Shift type is constant mesh, making it suited for load-sense pump setups that run without disengaging. The output shaft is a 1-1/2" 10-tooth spline with a 1410 companion flange. Shaft power ratings for the 877 Series reach 64 HP at 500 RPM and 128 HP at 1000 RPM. Continuous torque for the series reaches 670 lb-ft (check application pages for actual torque ratings for your specific installation). Typical applications within the 877 Series include refuse trucks, aerial, snow and ice, and fire and rescue equipment. Available from Pro Gear and Transmission. Call us to confirm proper fit for your application.
The Chelsea 877 Series is designed for demanding 10-bolt Allison transmission installations where continuous operation is required. Eight internal gear ratios provide a wide range of output speeds. Pressure lubrication is integrated into the PTO housing and requires one hose for a simplified installation. Two assembly arrangements are offered to maximize clearance during installation. Common applications for the 877 Series include refuse trucks, aerial lift trucks, snow and ice equipment, fire and rescue pumpers, and oil and gas vehicles. The 877 Series is noted by Parker Chelsea as obsolete; contact Pro Gear and Transmission to discuss availability or a current replacement option.
Features
10-bolt mounting for Allison transmissions
Constant mesh shift type for continuous-duty, load-sense pump applications
Output: 1-1/2" 10-tooth spline with 1410 companion flange
Shaft power: 64 HP at 500 RPM, 128 HP at 1000 RPM (877 Series)
Continuous torque up to 670 lb-ft (check application pages for actual ratings)
Compact housing height reduces clearance issues; rotatable output flange maximizes installation clearance; Wet Spline Technology extends 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 Companion Flange
- Output Power (877 Series): 56+ HP, 51+ kW
- Shaft Power (877 Series): 64 HP at 500 RPM, 128 HP at 1000 RPM, 48 kW at 500 RPM, 95 kW at 1000 RPM
- Intermittent Torque (877 Series): 501+ lb-ft, 501+ Nm
- Continuous Torque (877 Series): 670 lb-ft, 908 Nm (check application pages for actual torque ratings)
- Dimensions (H x W x L): 13 in. x 11 in. x 31 in.
Additional Information
The Chelsea 877 Series is designed for demanding 10-bolt Allison transmission installations where continuous operation is required. Eight internal gear ratios provide a wide range of output speeds. Pressure lubrication is integrated into the PTO housing and requires one hose for a simplified installation. Two assembly arrangements are offered to maximize clearance during installation. Common applications for the 877 Series include refuse trucks, aerial lift trucks, snow and ice equipment, fire and rescue pumpers, and oil and gas vehicles. The 877 Series is noted by Parker Chelsea as obsolete; contact Pro Gear and Transmission to discuss availability or a current replacement option.
Parts Manual: Chelsea 877 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
