The Chelsea 221 Series Power Take-Off, part number 221XCAHP-W3XK or 221XCAHPW3XK, is a 6-bolt mounted, air-shift PTO built around a cast iron housing with tapered cone output bearings. The 221 Series carries an intermittent torque rating of 250 lb-ft and delivers up to 48 HP at 1,000 RPM. Output options across the series include SAE A, SAE B, ISO 7652 pump flanges, and driveline configurations. The series is rated for continuous operation with a 30% de-rating and fits transmissions from Allison, Eaton/Fuller, Volvo/Mack, and select other manufacturers. The space-saving air shift cover is engineered to maximize clearance under the truck. Call us to confirm proper fit for your application.
Features
Chelsea 221 Series PTO, part number 221XCAHP-W3XK or 221XCAHPW3XK
6-bolt mounting configuration
Air shift cover designed for maximum under-truck clearance
Cast iron housing with tapered cone output bearings for heavy-duty load capacity
250 lb-ft intermittent torque rating; up to 48 HP at 1,000 RPM
Compatible with Allison, Eaton/Fuller, and Volvo/Mack transmissions
Rated for continuous operation with 30% de-rating
Tech Specs
- Mounting Type: 6-Bolt
- Shift Type: Air Shift
- Housing Material: Cast Iron
- Output Bearing Type: Tapered Cone
- Intermittent Torque Rating: 250 lb-ft (339 Nm)
- Shaft Power: 24 HP at 500 RPM; 48 HP at 1,000 RPM
- Output Power: 46-55 HP (31-40 kW)
- Continuous Operation: Yes, with 30% de-rating
- Compatible Transmission Manufacturers: Allison, Eaton/Fuller, Volvo/Mack, Other
- Output Options: SAE A Pump Flange, SAE B Pump Flange, ISO 7652 Pump Flange, Driveline
- Available Output Shafts (series): Round Shaft 1-1/4" - 5/16" Key; Tapered Shaft 1-1/4" w/ Keyway; SAE A 5/8" - 9T Pump Spline; SAE B 7/8" - 13T Pump Spline; SAE BB 1" - 15T Pump Spline; SAE C 1-1/4" - 14T Pump Spline
- Lubrication: No Pressure Lube (X designation)
- Part Number: 221XCAHP-W3XK or 221XCAHPW3XK
