The Chelsea 877XHFJW-M5RY or 877XHFJWM5RY is a constant-mesh power take-off from the Chelsea 877 Series, designed for 10-bolt Allison transmission mounting. The output shaft is a 1-1/2" 10-tooth spline with a 1410 companion flange. Continuous torque is rated at 670 lb-ft (check application pages for actual torque ratings), with intermittent torque beginning at 501 lb-ft. Shaft power reaches 128 HP at 1,000 RPM and 64 HP at 500 RPM. The compact housing reduces installation clearance issues, and rotatable output flanges offer further flexibility. Wet Spline Technology helps extend PTO and pump shaft life. Common applications include refuse trucks, aerial equipment, snow and ice, and fire and rescue vehicles. Call us to confirm proper fit for your application.
Features
10-bolt mounting for Allison transmissions
Constant-mesh shift type suits continuous-operation applications such as load-sense pumps
Output shaft: 1-1/2" 10-tooth spline with 1410 series companion flange
Continuous torque: 670 lb-ft / 908 Nm (verify rating on application pages); intermittent torque 501+ lb-ft
Shaft power: 64 HP at 500 RPM, 128 HP at 1,000 RPM
Compact housing with rotatable output flanges and Wet Spline Technology to reduce clearance issues and extend 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
- Intermittent Torque: 501+ lb-ft / 501+ Nm
- Continuous Torque: 670 lb-ft / 908 Nm (check application pages for actual torque ratings)
- Shaft Power: 64 HP at 500 RPM; 128 HP at 1,000 RPM (48 kW at 500 RPM; 95 kW at 1,000 RPM)
- Output Power: 56+ HP / 51+ kW
Additional Information
The Chelsea 877 Series is built for demanding, continuous-duty work cycles. Eight internal gear ratios are available across the series to match a wide range of hydraulic pump speed requirements. Pressure lubrication is integrated directly into the PTO housing and requires only one hose connection for installation. Two assembly arrangements are offered within the series to maximize clearance on tight installations. The 877 Series serves aerial, defense, on-highway, and other mobile markets, with proven use on refuse trucks, pumper cleaners, snow and ice equipment, and fire and rescue vehicles. Note: Parker lists the 877 Series as obsolete. Confirm current availability and exact fitment with Pro Gear and Transmission before ordering.Parts Manual: Chelsea 877 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
