The Chelsea 221XCAKP-M3XK or 221XCAKPM3XK is a Power Take-Off from Chelsea's 221 Series, a cast-iron, 6-bolt mounted PTO built for low-speed, heavy-duty work. The 221 Series supports multiple output types including SAE A, SAE B, and ISO 7652 pump flanges as well as driveline output, with intermittent torque rated up to 250 lb-ft (339 Nm). Shift type is wire/cable or mechanical depending on configuration. The series is compatible with Allison, Eaton/Fuller, and Volvo/Mack transmissions. Tapered cone output bearings provide load-bearing capability suited to aerial, dump truck, and tow-and-recovery applications. Note: Parker lists the 221 Series as obsolete. Call us to confirm availability and proper fit for your application.
Features
Chelsea 221 Series Power Take-Off, part number 221XCAKP-M3XK or 221XCAKPM3XK
6-bolt mounting configuration
Intermittent torque rating: 250 lb-ft (339 Nm); continuous operation with 30% de-rating
Output options include SAE A, SAE B, and ISO 7652 pump flanges, plus driveline
Cast-iron housing with tapered cone output bearings for heavy-duty load capacity
Compatible transmission manufacturers: Allison, Eaton/Fuller, Volvo/Mack
Wire/cable or mechanical shift type; self-lube option available within the series
Tech Specs
- 6-Bolt Mounting
- Intermittent Torque: 250 lb-ft (339 Nm)
- Output Power: 46-55 HP (31-40 kW)
- Shaft Power: 24 HP at 500 RPM / 48 HP at 1,000 RPM
- Shift Type: Wire/Cable or Mechanical
- Output Types: SAE A Pump Flange, SAE B Pump Flange, ISO 7652 Pump Flange, Driveline
- Output Shaft Options: Round Shaft (1-1/4 in. with 5/16 in. key), Tapered Shaft (1-1/4 in. with keyway), SAE A (5/8 in. - 9T), SAE B (7/8 in. - 13T), SAE BB (1 in. - 15T), SAE C (1-1/4 in. - 14T)
- Lubricant: Pressure Lube or No Pressure Lube options
- Compatible Transmissions: Allison, Eaton/Fuller, Volvo/Mack
- Housing: Cast Iron
- Continuous Operation: Yes, with 30% de-rating
- Dimensions (H x W x L): 8 in. x 10 in. x 14 in.
- NMFC Code: 128520 - Hydraulic PTOs, Pumps, Motors, etc.
