The Chelsea 221 Series Power Take-Off, part number 221ZEAKP-M4XX or 221ZEAKPM4XX, is a 6-bolt mounted PTO designed for low-speed, heavy-duty vocational work including dump trucks, tow and recovery, and aerial equipment. It uses a wire/cable mechanical shift and accepts a 1-1/4" round output shaft with key. Output power for the series 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) -- check application pages for actual torque ratings specific to your installation. Compatible transmission manufacturers include Allison, Eaton/Fuller, Volvo/Mack, Hino, and others. Greaseable pump shafts help control spline fretting and corrosion in demanding cycles. Available in standard or low-profile housing to suit tight cab-to-axle clearances. Call us to confirm proper fit for your transmission.
Features
6-bolt mounting, compatible with Allison, Eaton/Fuller, Volvo/Mack, Hino, and other transmission manufacturers
Wire/cable mechanical shift type
1-1/4" round output shaft with keyway
Intermittent torque up to 250 lb-ft (339 Nm) -- verify actual rating on application pages
Shaft power: 24 HP at 500 RPM, 48 HP at 1,000 RPM
Available in standard or low-profile 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
- Mounting Type: 6-Bolt
- Output Shaft Type: 1-1/4" Round with Key
- Transmission Manufacturer Compatibility: Allison, Eaton/Fuller, Volvo/Mack, Hino, Other
- Output Power: 46-55 HP / 31-40 kW
- Shaft Power: 24 HP (500 RPM), 48 HP (1,000 RPM) / 18 kW (500 RPM), 36 kW (1,000 RPM)
Additional Information
