The Chelsea 221XLAHX-A4XK or 221XLAHXA4XK is a 221 Series Power Take-Off assembly built for low-speed, heavy-duty applications. It mounts via a 6-bolt pattern and shifts through a wire/cable mechanical mechanism. The 1-1/4" round output shaft with key 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 transmission manufacturers include Allison, Eaton/Fuller, Volvo/Mack, and Hino. The cast iron housing is available in standard or low-profile configuration, and greaseable pump shafts help reduce spline fretting and corrosion over time. Call us to confirm proper fit for your application.
The Chelsea 221 Series PTO uses a cast iron housing and tapered cone bearings on the output shaft for strong load-bearing capability. Three internal speed ratios and eleven shift options make this a versatile unit across tow and recovery, dump truck, and aerial applications. The 221 Series also supports a self-lube option for transmissions that have difficulty supplying lubrication to the PTO. For continuous operation, a 30% de-rating applies. Contact Pro Gear and Transmission to verify the correct configuration for your transmission and application.
Features
6-bolt mounting pattern compatible with Allison, Eaton/Fuller, Volvo/Mack, and Hino transmissions
Wire/cable mechanical shift type
1-1/4" round output shaft with key
Intermittent torque 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
- Transmission Manufacturer: Allison, Eaton/Fuller, Volvo/Mack, Hino
- 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 Chelsea 221 Series PTO uses a cast iron housing and tapered cone bearings on the output shaft for strong load-bearing capability. Three internal speed ratios and eleven shift options make this a versatile unit across tow and recovery, dump truck, and aerial applications. The 221 Series also supports a self-lube option for transmissions that have difficulty supplying lubrication to the PTO. For continuous operation, a 30% de-rating applies. Contact Pro Gear and Transmission to verify the correct configuration for your transmission and application.
