The Chelsea 877XFFJW-M5RS or 877XFFJWM5RS is a constant-mesh power take-off from the Chelsea 877 Series, designed for 10-bolt Allison transmission applications with high torque demand and continuous-duty cycles. Output is through a 1-1/2" 10-spline shaft with a 1410 companion flange. Continuous torque capacity reaches 670 lb-ft (908 Nm) - check application pages for actual ratings in your specific installation. Shaft power is rated at 64 HP at 500 RPM and 128 HP at 1000 RPM. The compact housing limits clearance conflicts, rotatable output flanges give installation flexibility, and Wet Spline Technology reduces wear on both the PTO and pump shaft. Typical applications include refuse trucks, aerial units, snow and ice equipment, and fire and rescue vehicles. Call us to confirm proper fit for your application.
The 877 Series is engineered specifically for 10-bolt applications with demanding, continuous-duty workloads. Pressure lubrication is integrated directly into the PTO housing, requiring only one hose for installation. Eight internal gear ratios are available across the series to match a wide range of pump speed requirements. Common equipment applications include refuse trucks, aerial platforms, snow and ice units, fire and rescue trucks, and oil and gas vehicles. Parker lists the 877 Series as obsolete - call Pro Gear and Transmission to confirm current availability and to verify the correct replacement or cross-reference for your unit.
Features
10-bolt mounting for Allison transmission applications
Constant-mesh shift type - suited for continuous-duty and load-sense pump setups
Output shaft: 1-1/2" 10-spline with 1410 companion flange
Continuous torque up to 670 lb-ft (908 Nm) - verify rating on application pages
Shaft power: 64 HP at 500 RPM, 128 HP at 1000 RPM
Wet Spline Technology and rotatable output flanges for extended service life and installation flexibility
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
- Output Power: 56+ HP (51+ kW)
- 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 1000 RPM (48 kW at 500 RPM, 95 kW at 1000 RPM)
Additional Information
The 877 Series is engineered specifically for 10-bolt applications with demanding, continuous-duty workloads. Pressure lubrication is integrated directly into the PTO housing, requiring only one hose for installation. Eight internal gear ratios are available across the series to match a wide range of pump speed requirements. Common equipment applications include refuse trucks, aerial platforms, snow and ice units, fire and rescue trucks, and oil and gas vehicles. Parker lists the 877 Series as obsolete - call Pro Gear and Transmission to confirm current availability and to verify the correct replacement or cross-reference for your unit.
Parts Manual: Chelsea 877 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
