The Chelsea 272 Series Power Take-Off Assembly, part number 272RKKUP-B3RE or 272RKKUPB3RE, is a hot-shift 6-bolt PTO rated for up to 300 lb-ft of continuous torque and 201-300 lb-ft intermittent torque. Output is a 1-1/4" round shaft with a 5/16" key. Shift is pneumatic (PowerShift), and the unit includes an integral air control valve for simplified installation. The 272 Series consolidates earlier medium-duty Chelsea PTO lines into one platform with 9 speed ratios and 18 shift options. Compatible with transmissions from Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, and RAM, among others. Call us to confirm proper fit for your specific transmission and application.
Features
6-Bolt mounting configuration for broad transmission compatibility
1-1/4" round output shaft with 5/16" key
Pneumatic (PowerShift) hot-shift operation with integral air control valve
Continuous torque rating up to 300 lb-ft (407 Nm); 201-300 lb-ft (401-500 Nm) intermittent
Output power 56+ HP; shaft power rated at 57 HP at 1,000 RPM
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: Up to 300 lb-ft (407 Nm) - see 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)
- Shaft Power: 29 HP (21 kW) at 500 RPM; 57 HP (43 kW) at 1,000 RPM
- Shift Type: Pneumatic / PowerShift (Pneumatic/Hydraulic)
- Compatible Transmissions: Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, RAM, and others
Additional Information
The Chelsea 272 Series consolidates the earlier 230, 231, 236, 238, 270, and 271 PTO lines into a single medium-duty hot-shift platform. The series offers 9 speed ratios and 18 shift configurations, with rotatable flanges for flexible installation. Direct-mount outputs are available with optional Wet-Spline technology for extended PTO and pump shaft service life. Driveshaft output configurations can include the Smart Start option, which handles high-torque start-up conditions. Common markets for the 272 Series include towing and recovery, aerial work platforms, construction equipment, and water trucks.Parts Manual: Chelsea 272 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
