The Chelsea 221 Series Power Take-Off assembly, part number 221RCAJP-W5XK or 221RCAJPW5XK, is a 6-bolt mounted PTO built for low-speed, heavy-duty applications including dump trucks, tow and recovery, and aerial equipment. It uses a wire/cable mechanical shift and features a 1-1/4" round output shaft with key. Intermittent torque is rated up to 250 lb-ft (339 Nm), confirm actual ratings against Chelsea application pages for your specific installation. Shaft power output reaches 48 HP at 1,000 RPM. Compatible transmissions include Allison, Eaton/Fuller, Volvo/Mack, Hino, and others. Greaseable pump shafts help reduce spline fretting and corrosion over the service life. Call us to confirm proper fit for your application.
The Chelsea 221 Series is designed for vocational and municipal equipment, tow and recovery, dump truck, and aerial applications. The cast iron housing and tapered cone bearing on the output shaft contribute to the series' load-bearing capability. A low-profile housing option is available for installations with limited clearance. The 221 Series supports continuous operation with a 30% de-rating applied. Output options across the series include SAE A, SAE B, ISO 7652 pump flanges, and driveline configurations, with three internal speed ratios available in the broader 221 family. Confirm the correct ratio and output configuration for your specific installation by calling Pro Gear and Transmission.
Features
6-bolt mounting for compatibility with Allison, Eaton/Fuller, Volvo/Mack, Hino, and other transmission platforms
Wire/cable mechanical shift type
1-1/4" round output shaft with key
Intermittent torque up to 250 lb-ft (339 Nm), verify against Chelsea application pages for actual rating
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 Chelsea Application Pages for actual torque ratings for your installation)
- Shift Type: Wire/Cable, Mechanical
- Mounting Type: 6-Bolt
- Output Shaft Type: 1-1/4" Round with Key
- Output Power: 46-55 HP / 31-40 kW
- 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 is designed for vocational and municipal equipment, tow and recovery, dump truck, and aerial applications. The cast iron housing and tapered cone bearing on the output shaft contribute to the series' load-bearing capability. A low-profile housing option is available for installations with limited clearance. The 221 Series supports continuous operation with a 30% de-rating applied. Output options across the series include SAE A, SAE B, ISO 7652 pump flanges, and driveline configurations, with three internal speed ratios available in the broader 221 family. Confirm the correct ratio and output configuration for your specific installation by calling Pro Gear and Transmission.
