The Chelsea 221XLDAX-A3XQ (also referenced as 221XLDAXA3XQ) is a 221 Series Power Take-Off assembly built for low-speed, heavy-duty applications such as dump trucks, tow and recovery equipment, and aerial units. It mounts via a 6-bolt pattern and shifts by wire/cable mechanical actuation. The 1-1/4" round output shaft (with keyway option) delivers up to 250 lb-ft intermittent torque (verify actual rating on the application page). Shaft power output is rated at 24 HP at 500 RPM and 48 HP at 1,000 RPM. Compatible transmission manufacturers include Allison, Eaton/Fuller, Volvo/Mack, Hino, and others. The cast iron housing is available in standard or low-profile configurations. Call us to confirm proper fit for your application.
The 221 Series uses a cast iron housing with tapered cone output bearings for strong load-bearing capability under sustained heavy-duty cycling. The 360-degree rotatable flange option and three internal speed ratios give this series flexibility across aerial, vocational, municipal, and tow/recovery installations. Continuous operation is supported with a 30% de-rating applied to the intermittent torque rating. A self-lube option is available for transmissions that have difficulty delivering lubrication to the PTO mount.
Features
6-bolt mounting for compatibility with Allison, Eaton/Fuller, Volvo/Mack, Hino, and other transmission manufacturers
Wire/cable mechanical shift actuation
1-1/4" round output shaft with keyway
Intermittent torque rating up to 250 lb-ft (339 Nm) - verify 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 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, 1-1/4" Round with key
- 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)
Additional Information
The 221 Series uses a cast iron housing with tapered cone output bearings for strong load-bearing capability under sustained heavy-duty cycling. The 360-degree rotatable flange option and three internal speed ratios give this series flexibility across aerial, vocational, municipal, and tow/recovery installations. Continuous operation is supported with a 30% de-rating applied to the intermittent torque rating. A self-lube option is available for transmissions that have difficulty delivering lubrication to the PTO mount.
