The Chelsea 221XLAHX-W3XD or 221XLAHXW3XD is a 6-bolt power take-off assembly from the Chelsea 221 Series, built for low-speed, heavy-duty applications such as 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 compatible makes. The 1-1/4" round output shaft with keyway delivers 46-55 HP output, with shaft power rated at 24 HP at 500 RPM and 48 HP at 1,000 RPM. Intermittent torque for the 221 Series runs up to 250 lb-ft (339 Nm) -- check Chelsea application pages for the actual torque rating for this specific configuration. The cast iron housing is available in standard or low-profile form, and greaseable pump shafts reduce spline fretting and corrosion over time. Call us to confirm proper fit for your transmission and application.
The Chelsea 221 Series PTO features a cast iron housing and tapered cone output shaft bearings, providing greater load-bearing capability compared to needle bearing designs. The 221 Series offers twenty-six output options including a 360-degree rotatable flange, three internal speed ratios, and eleven shift options. A self-lube option is available for transmissions that have difficulty supplying lubrication to the PTO. Common applications include dump trucks, tow and recovery vehicles, and aerial equipment. The housing is available in both standard and low-profile configurations to suit tight undercab clearance situations.
Features
6-bolt mounting for compatibility with Allison, Eaton/Fuller, Volvo/Mack, Hino, and other transmission makes
Wire/cable mechanical shift type
1-1/4" round output shaft with keyway
Intermittent torque up to 250 lb-ft (339 Nm) for the 221 Series -- verify actual rating on Chelsea application pages
Shaft power: 24 HP at 500 RPM, 48 HP at 1,000 RPM
Greaseable pump shafts to resist spline fretting and corrosion; standard or low-profile housing options available
Tech Specs
- Intermittent Torque: Up to 250 lb-ft / 339 Nm (check Chelsea application pages for actual rating on this configuration)
- Shift Type: Wire/Cable, Mechanical
- Output Power: 46-55 HP / 31-40 kW
- Output Shaft Type: 1-1/4" Round with keyway
- Transmission Compatibility: Allison, Eaton/Fuller, Volvo/Mack, Hino, and other compatible makes
- Mounting Type: 6-Bolt
- Shaft Power: 24 HP at 500 RPM / 18 kW at 500 RPM; 48 HP at 1,000 RPM / 36 kW at 1,000 RPM
Additional Information
The Chelsea 221 Series PTO features a cast iron housing and tapered cone output shaft bearings, providing greater load-bearing capability compared to needle bearing designs. The 221 Series offers twenty-six output options including a 360-degree rotatable flange, three internal speed ratios, and eleven shift options. A self-lube option is available for transmissions that have difficulty supplying lubrication to the PTO. Common applications include dump trucks, tow and recovery vehicles, and aerial equipment. The housing is available in both standard and low-profile configurations to suit tight undercab clearance situations.
