The Chelsea 880 Series Power Take-Off Assembly, part number 880XRAHX-A3SS or 880XRAHXA3SS, is an 8-bolt, lever-mechanical-shift PTO built for heavy-duty applications including bulk haulers, fire trucks, oil field equipment, aerial units, winch systems, and large truck recovery. The output shaft is a 1-1/2"-10T spline with a 1410 companion flange, and the unit is rated for up to 500 lb-ft intermittent torque (678 Nm). Shaft power output reaches 48 HP at 500 RPM and 95 HP at 1000 RPM. The cast iron housing accepts a pump on each end via the dual-pump output design. Compatible with Volvo/Mack, Allison, Eaton/Fuller, and other 8-bolt manual transmissions. Call us to confirm proper fit for your specific transmission.

The Chelsea 880 Series is designed for constant-mesh input gears and supports continuous operation with a 30% de-rating. The series fits a wide range of 8-bolt manual transmissions including Eaton Endurant. Tapered cone bearings provide strong load-bearing capability across high-torque, variable-speed applications. Typical markets served include oil and gas, aerial, mining, on-highway, and other mobile equipment.
Features
8-bolt mounting for compatibility with Volvo/Mack, Allison, Eaton/Fuller, and other manual transmissions
Lever mechanical shift with optional air control shift available in the 880 Series
1-1/2"-10T spline output shaft with 1410 companion flange
Intermittent torque rating up to 500 lb-ft (678 Nm); check application pages for actual torque rating
Shaft power output: 48 HP at 500 RPM, 95 HP at 1000 RPM
Dual-pump output design allows mounting a hydraulic pump on each end of the PTO
Removable shift cover enables straightforward backlash adjustment
Rugged cast iron housing
Tech Specs
- INTERMITTENT TORQUE: 500 lb-ft (678 Nm) - Check Application Pages for Actual Torque Ratings
- SHIFT TYPE: Lever Mechanical
- OUTPUT SHAFT TYPE: 1-1/2" - 10T Spline with 1410 Companion Flange
- MOUNTING TYPE: 8-Bolt
- OUTPUT POWER: 56+ HP (51+ kW)
- SHAFT POWER: 48 HP (36 kW) at 500 RPM; 95 HP (71 kW) at 1000 RPM
- TRANSMISSION COMPATIBILITY: Volvo/Mack, Allison, Eaton/Fuller, Other
Additional Information

The Chelsea 880 Series is designed for constant-mesh input gears and supports continuous operation with a 30% de-rating. The series fits a wide range of 8-bolt manual transmissions including Eaton Endurant. Tapered cone bearings provide strong load-bearing capability across high-torque, variable-speed applications. Typical markets served include oil and gas, aerial, mining, on-highway, and other mobile equipment.
Parts manual and diagrams: Chelsea 880 Series PTO parts list with prices