The Chelsea 221 Series Power Take-Off Assembly, part number 221ZEAKP-M6AK or 221ZEAKPM6AK, is a 6-bolt mounted PTO built for low-speed, heavy-duty service on Allison, Eaton/Fuller, Volvo/Mack, Hino, and other transmission applications. Shift is wire/cable mechanical. The 1-1/4" round output shaft with key delivers up to 250 lb-ft intermittent torque (339 Nm), with shaft power rated at 24 HP at 500 RPM and 48 HP at 1,000 RPM. The cast iron housing uses tapered cone output bearings for strong load-bearing capability, and greaseable pump shafts reduce spline fretting and corrosion over time. A standard or low-profile housing option is available. Common applications include dump trucks, tow and recovery equipment, and aerial units. Call us to confirm proper fit for your specific transmission and chassis.
Features
6-bolt mounting type for secure transmission interface
Wire/cable mechanical shift engagement
1-1/4" round output shaft with key
Intermittent torque rating 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
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 rating)
- Shift Type: Wire/Cable, Mechanical
- 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)
- Output Shaft Type: 1-1/4" Round with key
- Mounting Type: 6-Bolt
- Transmission Compatibility: Allison, Eaton/Fuller, Volvo/Mack, Hino, Other
Additional Information
