The Chelsea 221 Series Power Take-Off assembly, part number 221ZEAHX-W3XK or 221ZEAHXW3XK, is a 6-bolt mounted PTO designed for low-speed, heavy-duty applications including dump trucks, tow and recovery, and aerial equipment. It uses a wire/cable mechanical shift and delivers up to 250 lb-ft (339 Nm) intermittent torque, verify your exact rating on the Chelsea application pages. The 1-1/4" round output shaft with keyway pairs with Allison, Eaton/Fuller, Volvo/Mack, Hino, and other compatible transmissions. Shaft power is rated at 24 HP at 500 RPM and 48 HP at 1,000 RPM. The cast iron housing is available in standard or low-profile configurations, and greaseable pump shafts help resist spline fretting and corrosion. Call us to confirm proper fit for your application.
The Chelsea 221 Series uses a cast iron housing with tapered cone bearings on the output shaft for strong load-bearing capability under sustained heavy-duty cycling. The series supports twenty-six output options and three internal speed ratios. The 360-degree rotatable flange and space-saving air shift cover provide installation flexibility and maximum clearance under the truck. Typical markets include aerial, vocational and municipal equipment, dump trucks, and tow and recovery operations.
Features
6-bolt mounting configuration compatible with Allison, Eaton/Fuller, Volvo/Mack, Hino, and other transmissions
Wire/cable mechanical shift type
1-1/4" round output shaft with keyway
Intermittent torque up to 250 lb-ft (339 Nm), confirm exact rating on Chelsea application pages
Shaft power: 24 HP at 500 RPM, 48 HP at 1,000 RPM
Available in standard or low-profile housing; greaseable pump shafts reduce spline fretting and corrosion
Tech Specs
- Intermittent Torque: 250 lb-ft / 339 Nm (check Chelsea application pages for actual torque rating)
- Shift Type: Wire/Cable, Mechanical
- Output Power: 46-55 HP / 31-40 kW
- Output Shaft Type: 1-1/4" Round with key
- Transmission Manufacturer: 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 at 500 RPM / 36 kW at 1,000 RPM)
Additional Information
The Chelsea 221 Series uses a cast iron housing with tapered cone bearings on the output shaft for strong load-bearing capability under sustained heavy-duty cycling. The series supports twenty-six output options and three internal speed ratios. The 360-degree rotatable flange and space-saving air shift cover provide installation flexibility and maximum clearance under the truck. Typical markets include aerial, vocational and municipal equipment, dump trucks, and tow and recovery operations.
