The Chelsea 221 Series Power Take-Off, part number 221ZEAHP-W4XD or 221ZEAHPW4XD, is a 6-bolt mounted PTO assembly built for low-speed, heavy-duty service on Allison, Eaton/Fuller, Volvo/Mack, Hino, and other transmission platforms. It uses a wire/cable mechanical shift and delivers 46-55 HP (31-40 kW) of output power. The 1-1/4" round output shaft with keyway suits direct pump drives. Shaft power ratings are 24 HP at 500 RPM and 48 HP at 1,000 RPM. Intermittent torque is rated at 250 lb-ft (339 Nm); verify the actual torque ceiling for your specific application before ordering. The cast iron housing is available in standard or low-profile configurations, and greaseable pump shafts reduce spline fretting over time. Common applications include dump trucks, tow and recovery, and aerial equipment. Call us to confirm proper fit for your transmission.
Features
6-bolt mounting compatible with Allison, Eaton/Fuller, Volvo/Mack, Hino, and other transmissions
Wire/cable mechanical shift engagement
1-1/4" round output shaft with keyway
Output power 46-55 HP (31-40 kW); shaft power 24 HP at 500 RPM, 48 HP at 1,000 RPM
Intermittent torque up to 250 lb-ft (339 Nm) -- check application pages for actual torque ratings
Available in standard or low-profile cast iron housing; greaseable pump shafts 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 keyway
- 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: Standard or low-profile cast iron
Additional Information
