The Chelsea 221 Series Power Take-Off, part number 221XCAHX-A3AF or 221XCAHXA3AF, is a 6-bolt mounted PTO built around a cast iron housing with tapered cone output bearings for heavy load capacity. The 221 Series carries an intermittent torque rating of 250 lb-ft (339 Nm) and is rated for continuous operation with a 30% de-rating. Output power reaches 48 HP at 1,000 RPM. Shift options include wire/cable and mechanical configurations. Compatible transmission manufacturers for the 221 Series include Allison, Eaton/Fuller, Volvo/Mack, and others. Parker lists the 221 Series as obsolete; call us to confirm current availability and proper fitment for your application.
Features
Chelsea 221 Series Power Take-Off, part number 221XCAHX-A3AF or 221XCAHXA3AF
6-bolt mounting configuration
Cast iron housing with tapered cone output bearings for heavy-duty load capacity
Intermittent torque rating: 250 lb-ft (339 Nm); output power up to 48 HP at 1,000 RPM
Shift options: wire/cable or mechanical
Compatible with Allison, Eaton/Fuller, Volvo/Mack, and other transmission manufacturers
Tech Specs
- Mounting Type: 6-Bolt
- Housing: Cast Iron
- Intermittent Torque: 250 lb-ft (339 Nm)
- Output Power: 48 HP at 1,000 RPM / 24 HP at 500 RPM
- Continuous Operation: Yes, with 30% de-rating
- Shift Type: Wire/Cable or Mechanical
- Output Types: SAE A Pump Flange, SAE B Pump Flange, ISO 7652 Pump Flange, Driveline
- Compatible Transmissions: Allison, Eaton/Fuller, Volvo/Mack, Other
- Dimensions (H x W x L): 8 in. x 10 in. x 14 in.
- Series Status: Obsolete (Parker Chelsea)
Additional Information
The Chelsea 221 Series was designed for low-speed, heavy-duty applications including dump trucks, tow and recovery, and aerial equipment. The series offered twenty-six output configurations and three internal speed ratios, along with a 360-degree rotatable flange option and a self-lube option for transmissions with restricted lubrication to the PTO port. A low-profile housing variant was also available within the series. Parker Chelsea now lists the 221 Series as no longer available. Call Pro Gear and Transmission to confirm part availability and fitment before ordering.Parts Manual: Chelsea 221 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
