The Chelsea 221XLDAX-A5XK (also referenced as 221XLDAXA5XK) is a 6-bolt power take-off assembly from the Chelsea 221 Series, 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 others. The 1-1/4" round output shaft with keyway delivers up to 250 lb-ft intermittent torque. Shaft power is rated at 24 HP at 500 RPM and 48 HP at 1,000 RPM. The cast iron housing is available in standard or low-profile configurations, and greaseable pump shafts help reduce spline fretting and corrosion. Call us to confirm proper fit for your transmission and application.
The Chelsea 221 Series uses a cast iron housing with tapered cone bearings on the output shaft for strong load-bearing capability under sustained vocational use. Three internal speed ratios and a 360-degree rotatable flange option add flexibility across a wide range of truck-mounted equipment setups. The low-profile housing variant is particularly useful where underbody clearance is limited. Typical applications include dump trucks, tow and recovery, and aerial equipment. The 221 Series also supports continuous operation with a 30% de-rating applied. Part number 221XLDAX-A5XK or 221XLDAXA5XK is sold by Pro Gear and Transmission. Not sure this is the right PTO for your truck? Give us a call.
Features
6-bolt mounting, compatible with Allison, Eaton/Fuller, Volvo/Mack, Hino, and other transmission manufacturers
Wire/cable mechanical shift engagement
1-1/4" round output shaft with keyway
Intermittent torque rating up to 250 lb-ft (339 Nm); verify actual rating on application pages
Shaft power: 24 HP at 500 RPM, 48 HP at 1,000 RPM
Available in standard or low-profile housing; greaseable pump shafts 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
- Mounting Type: 6-Bolt
- Transmission Manufacturer: Allison, Eaton/Fuller, Volvo/Mack, Hino, Other
- 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
The Chelsea 221 Series uses a cast iron housing with tapered cone bearings on the output shaft for strong load-bearing capability under sustained vocational use. Three internal speed ratios and a 360-degree rotatable flange option add flexibility across a wide range of truck-mounted equipment setups. The low-profile housing variant is particularly useful where underbody clearance is limited. Typical applications include dump trucks, tow and recovery, and aerial equipment. The 221 Series also supports continuous operation with a 30% de-rating applied. Part number 221XLDAX-A5XK or 221XLDAXA5XK is sold by Pro Gear and Transmission. Not sure this is the right PTO for your truck? Give us a call.
