The Chelsea 221 Series Power Take-Off Assembly, part number 221ZCAHX-W6XK or 221ZCAHXW6XK, is a 6-bolt mounted PTO designed for low-speed, heavy-duty vocational applications including dump trucks, tow and recovery, and aerial equipment. It uses a wire/cable mechanical shift and mounts to transmissions from Allison, Eaton/Fuller, Volvo/Mack, Hino, and other manufacturers. The 1-1/4" round output shaft with keyway delivers up to 250 lb-ft (339 Nm) intermittent torque, with shaft power rated at 24 HP at 500 RPM and 48 HP at 1,000 RPM. The cast iron housing features tapered cone output bearings for strong load capacity, and greaseable pump shafts help reduce spline fretting and corrosion. Available in standard or low-profile housing configurations. Call us to confirm proper fit for your transmission and application.
Features
6-bolt mounting type for secure, stable installation
Wire/cable mechanical shift for reliable PTO engagement
1-1/4" round output shaft with keyway
Intermittent torque rating up to 250 lb-ft (339 Nm); check application pages for actual ratings
Shaft power: 24 HP at 500 RPM, 48 HP at 1,000 RPM
Greaseable pump shafts to minimize spline fretting and corrosion
Available in standard or low-profile housing to suit tight underhood clearances
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 (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
