The Chelsea 272 Series Power Take-Off Assembly, part number 272ACKUP-B5XD or 272ACKUPB5XD, is a 6-bolt hot-shift PTO with a 1-1/4" round output shaft and 5/16" key. It operates with pneumatic or PowerShift (pneumatic/hydraulic) engagement and is rated for up to 300 lb-ft continuous torque and 201-300 lb-ft intermittently. Output power reaches 56+ HP, with shaft power of 29 HP at 500 RPM and 57 HP at 1,000 RPM. Compatible transmissions include Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, and RAM platforms. The 272 Series consolidates the earlier 230, 231, 236, 238, 270, and 271 Series into one platform, offering rotatable flanges and an integral air control valve. Common applications include aerial, construction equipment, towing and recovery, and water trucks. A genuine Chelsea part available from Pro Gear and Transmission. Call us to confirm proper fit for your application.
Features
6-bolt mounting configuration for broad transmission compatibility
1-1/4" round output shaft with 5/16" key
Pneumatic or PowerShift (pneumatic/hydraulic) engagement
Continuous torque rating up to 300 lb-ft (407 Nm); intermittent torque 201-300 lb-ft (401-500 Nm)
Output power 56+ HP; 29 HP at 500 RPM, 57 HP at 1,000 RPM
Integral air control valve; rotatable flanges for flexible installation
Compatible with Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, and RAM transmissions
Tech Specs
- Intermittent Torque: 201-300 lb-ft (401-500 Nm)
- Continuous Torque: 300 lb-ft (407 Nm) - check application pages for actual torque ratings
- Mounting Type: 6-Bolt
- Output Shaft Type: 1-1/4" Round with 5/16" Key
- Output Power: 56+ HP (41-50 kW)
- Shift Type: Pneumatic or PowerShift (Pneumatic/Hydraulic)
- Shaft Power at 500 RPM: 29 HP (21 kW)
- Shaft Power at 1,000 RPM: 57 HP (43 kW)
- Transmission Compatibility: Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, RAM, and other select transmissions
Additional Information
Parts manual and diagrams: Chelsea 272 Series PTO parts list with prices
