The Chelsea 221 Series Power Take-Off Assembly, part number 221ZCAHP-W4XD or 221ZCAHPW4XD, is a 6-bolt mounted PTO designed for low-speed, heavy-duty vocational applications including dump trucks, tow and recovery, and aerial equipment. It uses a wire/cable mechanical shift and delivers an output shaft power of 24 HP at 500 RPM and 48 HP at 1,000 RPM, with an intermittent torque rating in the 250 lb-ft (339 Nm) range - check application pages for actual torque values specific to your installation. The 1-1/4" round output shaft with key fits pumps in a wide range of configurations. Compatible transmissions include Allison, Eaton/Fuller, Volvo/Mack, and Hino. Greaseable pump shafts help reduce spline fretting and corrosion over time. Call us to confirm proper fit for your application.
Features
6-bolt mounting type for secure installation
Wire/cable mechanical shift operation
1-1/4" round output shaft with key
Output shaft power: 24 HP at 500 RPM, 48 HP at 1,000 RPM
Intermittent torque range: 201-300 lb-ft (check application pages for actual torque ratings)
Greaseable pump shafts to reduce spline fretting and corrosion
Available in standard or low-profile housing
Tech Specs
- Intermittent Torque: 201-300 lb-ft / 301-400 Nm (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
- 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)
- Compatible Transmissions: Allison, Eaton/Fuller, Volvo/Mack, Hino
- Housing Options: Standard or low-profile
Additional Information
