The Chelsea 221ZCAHX-W3XR or 221ZCAHXW3XR is a 6-bolt Power Take-Off assembly from the 221 Series, built for low-speed, heavy-duty applications including dump trucks, tow and recovery, and aerial equipment. It uses 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 accepts a keyway and delivers up to 48 HP at 1,000 RPM. The cast iron housing supports a 250 lb-ft intermittent torque rating (verify actual rating on the Chelsea application pages), and tapered cone output bearings handle greater load than needle-bearing designs. A low-profile housing option adds clearance under the truck. Call us to confirm proper fit for your application.
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
Shaft power: 24 HP at 500 RPM, 48 HP at 1,000 RPM; intermittent torque up to 250 lb-ft (check application pages for actual rating)
Cast iron housing with tapered cone output bearings for heavy load capacity
Available in standard or low-profile housing; greaseable pump shafts to 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
- Output Power: 46-55 HP / 31-40 kW
- Output Shaft Type: 1-1/4" Round with key
- Transmission Manufacturer: Allison, Eaton/Fuller, Volvo/Mack, Hino, Other
- Mounting Type: 6-Bolt
- Shaft Power: 24 HP at 500 RPM, 48 HP at 1,000 RPM / 18 kW at 500 RPM, 36 kW at 1,000 RPM
Additional Information
Parts Manual: Chelsea 221 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
