The Chelsea 221 Series Power Take-Off, part number 221XCDAP-A3XK or 221XCDAPA3XK, is a 6-bolt mounted PTO built for low-speed, heavy-duty service. It uses a wire/cable mechanical shift and delivers up to 250 lb-ft intermittent torque (339 Nm), with shaft power rated at 24 HP at 500 RPM and 48 HP at 1000 RPM. Output is through a 1-1/4" round shaft with key. Compatible transmissions include Allison, Eaton/Fuller, Volvo/Mack, Hino, and others. The cast iron housing is available in standard or low-profile configurations, and greaseable pump shafts help control spline fretting and corrosion in demanding cycles. Call us to confirm proper fit for your application.
The Chelsea 221 Series uses tapered cone bearings on the output shaft for greater load capacity compared to needle bearing designs. Three internal speed ratios and a self-lube option for transmissions with restricted PTO lubrication add to its versatility. Common applications include dump trucks, tow and recovery, aerial units, and vocational municipal equipment. Part number 221XCDAP-A3XK is also referenced as SP221XCDAP-A3XK in some catalog systems.
Features
6-bolt mounting configuration
Wire/cable mechanical shift
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 1000 RPM
Greaseable pump shafts 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
- Shaft Power: 24 HP at 500 RPM; 48 HP at 1000 RPM / 18 kW at 500 RPM; 36 kW at 1000 RPM
- Compatible Transmissions: Allison, Eaton/Fuller, Volvo/Mack, Hino, Other
- Housing Options: Standard or Low-Profile
Additional Information
The Chelsea 221 Series uses tapered cone bearings on the output shaft for greater load capacity compared to needle bearing designs. Three internal speed ratios and a self-lube option for transmissions with restricted PTO lubrication add to its versatility. Common applications include dump trucks, tow and recovery, aerial units, and vocational municipal equipment. Part number 221XCDAP-A3XK is also referenced as SP221XCDAP-A3XK in some catalog systems.
