The Chelsea 221 Series Power Take-Off, part number 221XCAHP-W6RF or 221XCAHPW6RF, is a 6-bolt mounted PTO built for low-speed, heavy-duty vocational work. It uses a wire/cable mechanical shift and 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. The 1-1/4" round output shaft with keyway suits a wide range of hydraulic pump drives. Compatible transmissions include Allison, Eaton/Fuller, Volvo/Mack, Hino, and other manufacturers. The cast iron housing uses tapered cone output bearings for load capacity beyond what needle-bearing designs provide, and greaseable pump shafts limit spline fretting and corrosion over time. Call us to confirm proper fit for your transmission and application.
The Chelsea 221 Series PTO is suited to aerial, dump truck, tow and recovery, and vocational/municipal equipment applications. The cast iron housing and tapered cone output bearings provide long service life under sustained load. A space-saving shift cover design maximizes clearance under the truck. Continuous operation is supported with a 30% de-rating applied to the intermittent torque rating. The 221 Series also offers a self-lube option for transmissions with limited PTO lubrication, and the 360-degree rotatable flange option broadens installation flexibility across chassis configurations.
Features
6-bolt mounting, compatible with Allison, Eaton/Fuller, Volvo/Mack, Hino, and other transmission manufacturers
Wire/cable mechanical shift type
1-1/4" round output shaft with keyway
Intermittent torque rating up to 250 lb-ft (339 Nm); verify actual rating on Chelsea 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 configurations
Tech Specs
- Intermittent Torque: 250 lb-ft / 339 Nm (check Chelsea application pages for actual torque rating for your installation)
- Shift Type: Wire/Cable, Mechanical
- Output Power: 46-55 HP / 31-40 kW
- Output Shaft Type: 1-1/4" Round with key
- Compatible Transmissions: Allison, Eaton/Fuller, Volvo/Mack, Hino, and other manufacturers
- 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)
- Dimensions (H x W x L): 8.38" x 10.38" x 14.25"
Additional Information
The Chelsea 221 Series PTO is suited to aerial, dump truck, tow and recovery, and vocational/municipal equipment applications. The cast iron housing and tapered cone output bearings provide long service life under sustained load. A space-saving shift cover design maximizes clearance under the truck. Continuous operation is supported with a 30% de-rating applied to the intermittent torque rating. The 221 Series also offers a self-lube option for transmissions with limited PTO lubrication, and the 360-degree rotatable flange option broadens installation flexibility across chassis configurations.
Parts Manual: Chelsea 221 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
