The Chelsea 221 Series Power Take-Off, part number 221XLAHX-W5RB or 221XLAHXW5RB, is a 6-bolt mounted PTO designed for low-speed, heavy-duty applications including dump trucks, tow and recovery, and aerial equipment. It uses a wire/cable mechanical shift and delivers up to 250 lb-ft intermittent torque (check application pages for actual torque ratings). The 1-1/4" round output shaft with key is driven through a cast iron housing fitted with tapered cone bearings for load-bearing durability. Shaft power output is 24 HP at 500 RPM and 48 HP at 1,000 RPM. Compatible transmission manufacturers include Allison, Eaton/Fuller, Volvo/Mack, Hino, and others. Call us to confirm proper fit for your transmission and application.
The Chelsea 221 Series PTO features a cast iron housing with tapered cone output bearings, giving it greater load-bearing capability than needle-bearing designs. The series offers a space-saving shift cover for maximum clearance under the truck, and greaseable pump shafts to control spline fretting and corrosion over time. Compatible output flange options in the 221 Series include SAE A, SAE B, ISO 7652 pump flanges, and driveline configurations. Three internal speed ratios are available across the series, along with a self-lube option for transmissions that have difficulty delivering lubrication to the PTO. Typical applications include dump trucks, tow and recovery units, and aerial equipment.
Features
6-bolt mounting type for broad transmission compatibility
Wire/cable mechanical shift operation
1-1/4" round output shaft with keyway
Intermittent torque up to 250 lb-ft (339 Nm) - check application pages for actual ratings
Shaft power: 24 HP at 500 RPM, 48 HP at 1,000 RPM
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
- Mounting Type: 6-Bolt
- Shaft Power: 24 HP (500 RPM), 48 HP (1,000 RPM) / 18 kW (500 RPM), 36 kW (1,000 RPM)
- Transmission Compatibility: Allison, Eaton/Fuller, Volvo/Mack, Hino, Other
Additional Information
The Chelsea 221 Series PTO features a cast iron housing with tapered cone output bearings, giving it greater load-bearing capability than needle-bearing designs. The series offers a space-saving shift cover for maximum clearance under the truck, and greaseable pump shafts to control spline fretting and corrosion over time. Compatible output flange options in the 221 Series include SAE A, SAE B, ISO 7652 pump flanges, and driveline configurations. Three internal speed ratios are available across the series, along with a self-lube option for transmissions that have difficulty delivering lubrication to the PTO. Typical applications include dump trucks, tow and recovery units, and aerial equipment.
