The Chelsea 221XCAKP-M4XQ or 221XCAKPM4XQ is a 221 Series Power Take-Off built for low-speed, heavy-duty applications including dump trucks, tow and recovery, and aerial equipment. The 221 Series uses a cast iron housing with tapered cone output bearings for greater load-bearing capability compared to needle-bearing designs. It mounts via a 6-bolt pattern and the series offers multiple output shaft and flange options, including SAE A, SAE B, and SAE C pump flanges, plus driveline outputs. Intermittent torque rating for the 221 Series is 250 lb-ft. Continuous operation is supported with a 30% de-rating. Shift options include wire/cable and mechanical. This series is noted by Parker Chelsea as no longer available in current production. Call us to confirm proper fit and availability for your application.
Features
Chelsea 221 Series PTO, part 221XCAKP-M4XQ or 221XCAKPM4XQ
6-bolt mounting configuration
250 lb-ft intermittent torque rating (339 Nm) for the 221 Series
Cast iron housing with tapered cone output bearings for heavy load capability
Multiple output options: SAE A, SAE B, SAE BB, SAE C pump flanges and driveline
Wire/cable and mechanical shift types available across the 221 Series
Suited for dump trucks, tow and recovery, and aerial vocational equipment
Tech Specs
- Series: Chelsea 221 Series Power Take-Off
- Part Number: 221XCAKP-M4XQ or 221XCAKPM4XQ
- Mounting Type: 6-Bolt
- Intermittent Torque (Series): 250 lb-ft / 339 Nm
- Output Power (Series): 46-55 HP / 31-40 kW
- Shaft Power (Series): 24 HP at 500 RPM, 48 HP at 1000 RPM
- Shift Type Options (Series): Wire/Cable, Mechanical
- Output Types (Series): SAE A Pump Flange, SAE B Pump Flange, ISO 7652 Pump Flange, Driveline
- Output Shaft Options (Series): Round Shaft 1-1/4" with 5/16" Key, Tapered Shaft 1-1/4" with 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
- Transmission Compatibility (Series): Allison, Eaton/Fuller, Volvo/Mack, Other
- Continuous Operation: Yes, with 30% de-rating
- Production Status: Obsolete - Parker Chelsea lists this series as no longer in current production
