The Chelsea 221ZEAHX-W5XD or 221ZEAHXW5XD is a 6-bolt power take-off assembly from the Chelsea 221 Series, designed for low-speed, heavy-duty applications such as dump trucks, tow and recovery, and aerial equipment. Shift type is wire/cable mechanical. The 1-1/4" round output shaft accepts a keyway. Output power runs 46-55 HP (31-40 kW), with shaft power rated at 24 HP (500 RPM) and 48 HP (1,000 RPM). Intermittent torque is rated up to 250 lb-ft (339 Nm), confirm actual torque against the application pages for your specific install. Compatible transmission manufacturers include Allison, Eaton/Fuller, Volvo/Mack, and Hino. Available in standard or low-profile housing configurations. Call us to confirm proper fit for your application.
The Chelsea 221 Series PTO uses a cast iron housing with tapered cone bearings on the output shaft for strong load-bearing capability. The series offers a 360-degree rotatable flange option and three internal speed ratios. The space-saving shift cover is designed to maximize clearance under the truck. Continuous operation is supported with a 30% de-rating. Greaseable pump shafts help combat spline fretting and corrosion over the long service life of the unit.
Features
6-bolt mounting configuration compatible with Allison, Eaton/Fuller, Volvo/Mack, and Hino transmissions
Wire/cable mechanical shift type
1-1/4" round output shaft with keyway
Intermittent torque up to 250 lb-ft (339 Nm), verify against application pages for actual rating
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
Tech Specs
- Intermittent Torque: 250 lb-ft / 339 Nm (check 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 keyway
- Transmission Manufacturer Compatibility: Allison, Eaton/Fuller, Volvo/Mack, Hino
- Mounting Type: 6-Bolt
- Shaft Power: 24 HP (500 RPM), 48 HP (1,000 RPM) / 18 kW (500 RPM), 36 kW (1,000 RPM)
Additional Information
The Chelsea 221 Series PTO uses a cast iron housing with tapered cone bearings on the output shaft for strong load-bearing capability. The series offers a 360-degree rotatable flange option and three internal speed ratios. The space-saving shift cover is designed to maximize clearance under the truck. Continuous operation is supported with a 30% de-rating. Greaseable pump shafts help combat spline fretting and corrosion over the long service life of the unit.
