The Chelsea 272 Series Power Take-Off Assembly, part number 272ACKUP-B5RF or 272ACKUPB5RF, is a 6-bolt hot-shift PTO designed for medium-duty applications including aerial work, towing and recovery, construction equipment, and water trucks. It features a pneumatic or PowerShift (pneumatic/hydraulic) engagement and a 1-1/4" round output shaft with a 5/16" key. Continuous torque capability reaches 300 lb-ft (407 Nm); intermittent torque is rated at 201-300 lb-ft (401-500 Nm). Output power is rated at 56+ HP (41-50 kW), with shaft power of 29 HP at 500 RPM and 57 HP at 1,000 RPM. Compatible transmission manufacturers include Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, and RAM. A genuine Chelsea part, available from Pro Gear and Transmission. Call us to confirm proper fit for your specific transmission.
Features
6-bolt mounting configuration for broad transmission compatibility
Pneumatic or PowerShift (pneumatic/hydraulic) hot-shift engagement
1-1/4" round output shaft with 5/16" key
Continuous torque rating up to 300 lb-ft (407 Nm); intermittent torque 201-300 lb-ft (401-500 Nm)
Output power 56+ HP (41-50 kW); 57 HP at 1,000 RPM shaft speed
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, PowerShift (Pneumatic/Hydraulic)
- Shaft Power: 29 HP (21 kW) at 500 RPM; 57 HP (43 kW) at 1,000 RPM
- Compatible Transmissions: Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, RAM
Additional Information
Parts Manual: Chelsea 272 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
