The Chelsea 221 Series Power Take-Off, part number 221ZCAKP-M4AF or 221ZCAKPM4AF, is a 6-bolt mounted PTO built for low-speed, heavy-duty service on vocational trucks including dump trucks, tow and recovery, and aerial equipment. It ships with a 1-1/4" round output shaft with keyway and uses wire/cable mechanical shift. Intermittent torque is rated at 250 lb-ft (339 Nm); verify actual rating on the application pages for your specific setup. Shaft power output runs 24 HP at 500 RPM and 48 HP at 1000 RPM. Compatible transmission manufacturers include Allison, Eaton/Fuller, Volvo/Mack, and Hino, among others. The cast iron housing carries tapered cone output bearings for load capacity beyond what needle bearings provide. Greaseable pump shafts help control spline fretting and corrosion over the unit's service life. Call us to confirm proper fit for your application.
Features
6-bolt mounting for Allison, Eaton/Fuller, Volvo/Mack, Hino, and other compatible transmissions
Wire/cable mechanical shift operation
1-1/4" round output shaft with keyway
Intermittent torque rating of 250 lb-ft (339 Nm); check application pages for your verified rating
Shaft power: 24 HP at 500 RPM, 48 HP at 1000 RPM
Greaseable pump shafts to reduce spline fretting and corrosion in service
Tech Specs
- Intermittent Torque: 250 lb-ft / 339 Nm (check application pages for actual torque rating for your application)
- Shift Type: Wire/Cable, Mechanical
- Output Power: 46-55 HP / 31-40 kW
- Shaft Power: 24 HP at 500 RPM, 48 HP at 1000 RPM (18 kW at 500 RPM, 36 kW at 1000 RPM)
- Output Shaft Type: 1-1/4" Round with keyway
- Mounting Type: 6-Bolt
- Compatible Transmissions: Allison, Eaton/Fuller, Volvo/Mack, Hino, and other applications
