The Chelsea 221ZEAHX-H3RB or 221ZEAHXH3RB is a 221 Series Power Take-Off assembly built for low-speed, heavy-duty service. It mounts via a 6-bolt pattern and uses wire/cable mechanical shift actuation. The 1-1/4" round output shaft accepts a key and is designed for direct pump drive. Intermittent torque rating for this series reaches 250 lb-ft (339 Nm); continuous operation is supported with a 30% de-rating. Shaft power output is 24 HP at 500 RPM and 48 HP at 1,000 RPM. Compatible transmissions include Allison, Eaton/Fuller, Volvo/Mack, Hino, and select other models. The cast iron housing is available in standard or low-profile configurations. Greaseable pump shafts help control spline fretting. Call us to confirm proper fit for your application.
Features
6-bolt mounting pattern compatible with Allison, Eaton/Fuller, Volvo/Mack, Hino, and other transmissions
Wire/cable mechanical shift actuation
1-1/4" round output shaft with keyway
Intermittent torque capacity up to 250 lb-ft (339 Nm); continuous operation with 30% de-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 ratings)
- 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 at 500 RPM; 36 kW at 1,000 RPM
- Housing Options: Standard or Low-Profile
Additional Information
