The Chelsea 221XLAHX-X5XK or 221XLAHXX5XK is a 6-bolt Power Take-Off assembly from the Chelsea 221 Series, built 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 intermittent torque (339 Nm). Output power ranges from 46-55 HP (31-40 kW), with shaft power rated at 24 HP at 500 RPM and 48 HP at 1,000 RPM. Compatible with Allison, Eaton/Fuller, Hino, Volvo/Mack, and other transmission makes. The cast iron housing is available in standard or low-profile configurations. Greaseable pump shafts help resist spline fretting and corrosion. Call us to confirm proper fit for your application.
The Chelsea 221 Series features tapered cone output shaft bearings for greater load-bearing capability compared to needle bearing designs. The 360-degree rotatable flange option and the space-saving air shift cover provide installation flexibility and maximum clearance under the vehicle. This series supports continuous operation with a 30% de-rating. Multiple output flange options within the 221 Series include SAE A, SAE B, ISO 7652 pump flange, and driveline configurations. The self-lube option accommodates transmissions that have difficulty delivering lubrication to the PTO mounting pad.
Features
6-bolt mounting type, compatible with Allison, Eaton/Fuller, Hino, Volvo/Mack, and other transmissions
Wire/cable mechanical shift
1-1/4" round output shaft with keyway
Intermittent torque rating up to 250 lb-ft (339 Nm); check application pages for actual torque ratings
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 with Key
- Transmission Manufacturer: Allison, Eaton/Fuller, Hino, Volvo/Mack, 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)
Additional Information
The Chelsea 221 Series features tapered cone output shaft bearings for greater load-bearing capability compared to needle bearing designs. The 360-degree rotatable flange option and the space-saving air shift cover provide installation flexibility and maximum clearance under the vehicle. This series supports continuous operation with a 30% de-rating. Multiple output flange options within the 221 Series include SAE A, SAE B, ISO 7652 pump flange, and driveline configurations. The self-lube option accommodates transmissions that have difficulty delivering lubrication to the PTO mounting pad.
