The Chelsea 221XCAJP-W3XQ or 221XCAJPW3XQ is a 221 Series Power Take-Off assembly built for low-speed, heavy-duty vocational applications including dump trucks, tow and recovery, and aerial equipment. It mounts via a 6-bolt pattern and uses wire/cable mechanical shift. The 1-1/4" round output shaft with keyway delivers up to 250 lb-ft of intermittent torque (339 Nm), with shaft power rated at 24 HP at 500 RPM and 48 HP at 1,000 RPM. Output power range spans 46-55 HP (31-40 kW). The cast iron housing and tapered cone output bearings provide greater load-bearing capability than needle-bearing designs. Compatible transmissions include Allison, Eaton/Fuller, Volvo/Mack, Hino, and others. Call us to confirm proper fit for your specific transmission and application.
The Chelsea 221 Series is designed for vocational markets including aerial, dump truck, and tow and recovery applications. The series features a cast iron housing with tapered cone output bearings for superior load-bearing capacity compared to needle-bearing alternatives. A space-saving shift cover provides clearance under the truck. The 221 Series supports continuous operation with a 30% de-rating. Output options across the series include SAE A, SAE B, ISO 7652 pump flanges, and driveline configurations. Three internal speed ratios and multiple shift options are available across the series lineup. Parker documents available for this series include the 221 Series Owner's Manual and Parts List (HY25-2221-M1_US).
Features
6-bolt mounting pattern 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 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
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 key
- Mounting Type: 6-Bolt
- Transmission Compatibility: 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)
- Package Dimensions (H x W x L): 8.38" x 10.38" x 14.25"
Additional Information
The Chelsea 221 Series is designed for vocational markets including aerial, dump truck, and tow and recovery applications. The series features a cast iron housing with tapered cone output bearings for superior load-bearing capacity compared to needle-bearing alternatives. A space-saving shift cover provides clearance under the truck. The 221 Series supports continuous operation with a 30% de-rating. Output options across the series include SAE A, SAE B, ISO 7652 pump flanges, and driveline configurations. Three internal speed ratios and multiple shift options are available across the series lineup. Parker documents available for this series include the 221 Series Owner's Manual and Parts List (HY25-2221-M1_US).
