The Chelsea 880XRAHX-M5SS or 880XRAHXM5SS is a heavy-duty 8-bolt Power Take-Off assembly from the Chelsea 880 Series, rated for up to 500 lb-ft (678 Nm) intermittent torque. It uses a lever mechanical shift, constant mesh input gears, and a 1-1/2"-10T spline output shaft fitted with a 1410 companion flange. Shaft power is rated at 48 HP at 500 RPM and 95 HP at 1000 RPM, with output exceeding 56 HP. The 880 Series fits manual transmissions with an 8-bolt aperture and is compatible with Eaton/Fuller, Volvo/Mack, Allison, and other transmission manufacturers. Cast iron housing and tapered cone bearings support demanding applications including fire trucks, bulk haulers, oil field service, aerial equipment, and large truck recovery. Call us to confirm proper fit for your specific transmission.

The Chelsea 880 Series is suited for high-torque, heavy-duty PTO applications across oil and gas, aerial, mining, and on-highway markets. Typical applications include bulk haulers, winch systems, fire trucks, oil field equipment, aerial platforms, and large truck recovery vehicles. The removable shift cover allows backlash adjustment without removing the PTO from the transmission, reducing service time. Continuous operation is supported with a 30% de-rating applied to the intermittent torque figures. The dual-pump output configuration allows a hydraulic pump to be mounted on each end of the unit simultaneously.
Features
8-Bolt mounting for compatibility with most manual transmissions including Eaton/Fuller, Volvo/Mack, and Allison
1-1/2"-10T spline output shaft with 1410 Series companion flange
Lever mechanical shift; optional air control shift also available in the series
Intermittent torque rating: 500 lb-ft (678 Nm) - verify actual rating on application pages
Shaft power: 48 HP at 500 RPM, 95 HP at 1000 RPM
Rugged cast iron housing with tapered cone bearings and dual-pump output capability
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 Series Companion Flange
- MOUNTING TYPE: 8-Bolt
- OUTPUT POWER: 56+ HP / 51+ kW
- SHAFT POWER: 48 HP at 500 RPM; 95 HP at 1000 RPM (36 kW at 500 RPM; 71 kW at 1000 RPM)
- TRANSMISSION COMPATIBILITY: Eaton/Fuller, Volvo/Mack, Allison, Other
Additional Information

The Chelsea 880 Series is suited for high-torque, heavy-duty PTO applications across oil and gas, aerial, mining, and on-highway markets. Typical applications include bulk haulers, winch systems, fire trucks, oil field equipment, aerial platforms, and large truck recovery vehicles. The removable shift cover allows backlash adjustment without removing the PTO from the transmission, reducing service time. Continuous operation is supported with a 30% de-rating applied to the intermittent torque figures. The dual-pump output configuration allows a hydraulic pump to be mounted on each end of the unit simultaneously.