The Chelsea 221ZEAHX-A3RB or 221ZEAHXA3RB is a 6-bolt, wire/cable mechanical-shift power take-off built for low-speed, heavy-duty work on dump trucks, tow and recovery rigs, and aerial equipment. It delivers up to 250 lb-ft intermittent torque (339 Nm) and is compatible with Allison, Eaton/Fuller, Volvo/Mack, Hino, and other transmission platforms. The 1-1/4" round output shaft with key accepts a range of driven equipment. Shaft power is rated at 24 HP at 500 RPM and 48 HP at 1,000 RPM, placing it in the 46-55 HP output range. The cast iron housing is available in standard or low-profile configurations, and greaseable pump shafts help resist spline fretting and corrosion over time. Call us to confirm proper fit for your application.
Features
6-bolt mounting, compatible with Allison, Eaton/Fuller, Volvo/Mack, Hino, and other transmissions
1-1/4" round output shaft with keyway
Wire/cable mechanical shift operation
Intermittent torque rating up to 250 lb-ft (339 Nm); check application pages for actual torque ratings
Shaft power: 24 HP at 500 RPM, 48 HP at 1,000 RPM
Standard or low-profile housing options; greaseable pump shafts to reduce spline fretting and corrosion
Tech Specs
- Intermittent Torque: 250 lb-ft / 339 Nm (check application pages for actual torque ratings)
- 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)
- Housing Options: Standard or low-profile
Additional Information
