The Chelsea 221 Series Power Take-Off, part number 221ZEAKP-M5GK or 221ZEAKPM5GK, is a 6-bolt mounted PTO built for low-speed, heavy-duty service on trucks equipped with Allison, Eaton/Fuller, Volvo/Mack, Hino, or other compatible transmissions. Shift is accomplished by wire/cable mechanical actuation. The 1-1/4" round output shaft with keyway delivers up to 250 lb-ft intermittent torque (verify actual rating on the application pages for your specific configuration). Shaft power is 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 capacity, and greaseable pump shafts help reduce spline fretting and corrosion. A low-profile housing option is available for tight cab clearance situations. Common applications include dump trucks, tow and recovery, and aerial equipment. Pro Gear and Transmission can help confirm proper fit for your truck and transmission.
Features
6-bolt mounting for compatibility 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 up to 250 lb-ft (check application pages for your specific configuration)
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 for your configuration)
- Shift Type: Wire/Cable, Mechanical
- Mounting Type: 6-Bolt
- Output Shaft Type: 1-1/4" Round with key
- Transmission 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)
- Continuous Operation: Yes, with 30% de-rating
Additional Information
Parts manual and diagrams: Chelsea 221 Series PTO parts list with prices
