The Chelsea 221 Series Power Take-Off Assembly, part number 221XLAHX-A4XD or 221XLAHXA4XD, is a 6-bolt mounted PTO designed for low-speed, heavy-duty applications including dump trucks, tow and recovery, and aerial equipment. Shift type is wire/cable mechanical. 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. Compatible transmissions include Allison, Eaton/Fuller, Volvo/Mack, Hino, and other manufacturers. The cast iron housing is available in standard or low-profile configurations. Call us to confirm proper fit for your application.
The Chelsea 221 Series uses tapered cone output bearings rather than needle bearings for greater load-bearing capability under heavy-duty cycle conditions. The 360-degree rotatable flange design and twenty-six output options give this series broad versatility across aerial, dump truck, and tow and recovery applications. A self-lube option is available for transmissions that have difficulty supplying lubrication to the PTO. Three internal speed ratios and eleven shift options are offered across the 221 Series. Not sure this is your part? Give us a call.
Features
6-bolt mounting type, compatible with Allison, Eaton/Fuller, Volvo/Mack, Hino, and other transmissions
Wire/cable mechanical shift operation
1-1/4" round output shaft with keyway
Intermittent torque rated at 250 lb-ft (339 Nm); verify actual rating on application pages
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 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 at 500 RPM / 48 HP at 1,000 RPM (18 kW at 500 RPM / 36 kW at 1,000 RPM)
- Continuous Operation: Yes, with 30% de-rating
Additional Information
The Chelsea 221 Series uses tapered cone output bearings rather than needle bearings for greater load-bearing capability under heavy-duty cycle conditions. The 360-degree rotatable flange design and twenty-six output options give this series broad versatility across aerial, dump truck, and tow and recovery applications. A self-lube option is available for transmissions that have difficulty supplying lubrication to the PTO. Three internal speed ratios and eleven shift options are offered across the 221 Series. Not sure this is your part? Give us a call.
