The Chelsea 221XCAHP-A3RA or 221XCAHPA3RA is a Power Take-Off from Chelsea's 221 Series, a cast iron, 6-bolt mounted PTO designed for low-speed, heavy-duty truck applications including dump trucks, tow and recovery, and aerial equipment. The 221 Series carries an intermittent torque rating of 250 lb-ft (339 Nm) and supports output power up to 48 HP at 1,000 RPM. Compatible with Allison, Eaton/Fuller, Volvo/Mack, and other transmission manufacturers. The 221 Series offers multiple output options including SAE A, SAE B, and SAE C pump flanges, along with driveline output, and supports both wire/cable and mechanical shift types. Call us to confirm proper fit for your specific application.
Features
Chelsea 221 Series Power Take-Off, part number 221XCAHP-A3RA or 221XCAHPA3RA
6-bolt mounting with cast iron housing for durability in demanding vocational service
Intermittent torque rating: 250 lb-ft (339 Nm); output power up to 48 HP at 1,000 RPM
Compatible with Allison, Eaton/Fuller, Volvo/Mack, and other transmission manufacturers
Supports wire/cable and mechanical shift types
Multiple output options including SAE A, SAE B, SAE BB, and SAE C pump splines, round shaft, tapered shaft, and driveline output
Tech Specs
- Output Type: SAE A Pump Flange, SAE B Pump Flange, SAE BB Pump Flange, SAE C Pump Flange, ISO 7652 Pump Flange, Driveline
- Mounting Type: 6-Bolt
- Shift Type: Wire/Cable, Mechanical
- Intermittent Torque: 250 lb-ft (339 Nm)
- Output Power: 48 HP at 1,000 RPM / 24 HP at 500 RPM
- Output Shaft Options: Round Shaft (1-1/4" - 5/16" Key), Tapered Shaft (1-1/4" with Keyway), SAE A (5/8" - 9T), SAE B (7/8" - 13T), SAE BB (1" - 15T), SAE C (1-1/4" - 14T)
- Housing Material: Cast Iron
- Transmission Compatibility: Allison, Eaton/Fuller, Volvo/Mack, and others
- Continuous Operation: Yes, with 30% de-rating
Additional Information
Parts Manual: Chelsea 221 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
