The Chelsea 221 Series Power Take-Off, part number 221XCAHX-A6XD or 221XCAHXA6XD, is a heavy-duty PTO built for low-speed, high-torque vocational applications including dump trucks, tow and recovery, and aerial equipment. The 221 Series uses a cast iron housing with tapered cone output shaft bearings for extended service life under load. Output options span SAE A, SAE B, and ISO 7652 pump flanges as well as driveline configurations, all on a 6-bolt mount. Shift options include wire/cable and mechanical actuation. Compatible transmission families include Allison, Eaton/Fuller, and Volvo/Mack. The 221 Series is listed by Parker Chelsea as an obsolete series; call Pro Gear and Transmission to confirm availability and proper fitment for your application.
Features
Cast iron housing with tapered cone output shaft bearings for high load-bearing capability
6-bolt mounting configuration
Shift options: wire/cable or mechanical actuation
Output choices include SAE A, SAE B, ISO 7652 pump flanges, and driveline
Compatible with Allison, Eaton/Fuller, and Volvo/Mack transmissions
Chelsea 221 Series intermittent torque rating: 250 lb-ft (339 Nm)
Tech Specs
- Output Type: SAE A Pump Flange, SAE B Pump Flange, ISO 7652 Pump Flange, Driveline
- Mounting Type: 6-Bolt
- Shift Type: Wire/Cable, Mechanical
- Intermittent Torque Rating: 250 lb-ft (339 Nm)
- Output Power: 46 to 55 HP (31 to 40 kW)
- Shaft Power: 24 HP at 500 RPM, 48 HP at 1000 RPM
- Continuous Operation: Yes, with 30% de-rating
- Housing Material: Cast Iron
- Compatible Transmissions: Allison, Eaton/Fuller, Volvo/Mack
- Series Status: Obsolete (Parker Chelsea)
