The Chelsea 221 Series Power Take-Off assembly, part number 221XEAHX-A6AF or 221XEAHXA6AF, is a cast-iron, 6-bolt PTO built for low-speed, heavy-duty service on dump trucks, tow and recovery, and aerial equipment. Output is a 1-1/4" round shaft with key, driven by a wire/cable mechanical shift mechanism. Intermittent torque rating for the 221 Series runs up to 250 lb-ft (339 Nm) -- verify your exact application on Chelsea's application pages. Shaft power is rated at 24 HP at 500 RPM and 48 HP at 1,000 RPM. Compatible transmissions include Allison, Eaton/Fuller, Volvo/Mack, Hino, and others. A standard or low-profile housing is available depending on clearance requirements. Call us to confirm proper fit for your application.
The Chelsea 221 Series features tapered cone output bearings rather than needle bearings, providing greater load-bearing capability for demanding low-speed applications. The 221 Series supports twenty-six output configurations including Chelsea's 360-degree rotatable flange, and offers three internal speed ratios. A self-lube option is available for transmissions with restricted PTO lubrication flow. Typical applications include dump trucks, tow and recovery, and aerial equipment.
Features
6-bolt mounting, compatible with Allison, Eaton/Fuller, Volvo/Mack, Hino, and other transmission brands
1-1/4" round output shaft with key
Wire/cable mechanical shift actuation
Intermittent torque up to 250 lb-ft (339 Nm) -- confirm rating on Chelsea application pages
Shaft power: 24 HP at 500 RPM, 48 HP at 1,000 RPM
Greaseable pump shafts to reduce spline fretting and corrosion
Available in standard or low-profile housing to fit tight chassis clearances
Tech Specs
- Intermittent Torque: Up to 250 lb-ft / 339 Nm (check Chelsea application pages for actual rating)
- Shift Type: Wire/Cable, Mechanical
- Output Power: 46-55 HP / 31-40 kW
- Output Shaft Type: 1-1/4" Round with Key
- Transmission Compatibility: Allison, Eaton/Fuller, Volvo/Mack, Hino, Other
- Mounting Type: 6-Bolt
- Shaft Power: 24 HP at 500 RPM, 48 HP at 1,000 RPM (18 kW / 36 kW)
Additional Information
The Chelsea 221 Series features tapered cone output bearings rather than needle bearings, providing greater load-bearing capability for demanding low-speed applications. The 221 Series supports twenty-six output configurations including Chelsea's 360-degree rotatable flange, and offers three internal speed ratios. A self-lube option is available for transmissions with restricted PTO lubrication flow. Typical applications include dump trucks, tow and recovery, and aerial equipment.
