The Chelsea 272DCKUP-G3RK or 272DCKUPG3RK is a 272 Series 6-bolt hot-shift power take-off assembly with pneumatic (air) or PowerShift pneumatic/hydraulic shift operation and an integral air control valve. Output is via a 1-1/4" round shaft with a 5/16" key. The 272 Series is rated for continuous torque up to 300 lb-ft (407 Nm) and intermittent torque in the 201-300 lb-ft (401-500 Nm) range, with 56+ HP output capability. Compatible transmission manufacturers include 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 (air) shift or PowerShift (pneumatic/hydraulic) operation with integral air control valve
Continuous torque rating up to 300 lb-ft (407 Nm); intermittent torque 201-300 lb-ft (401-500 Nm)
56+ HP output power capability
Compatible with Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, and RAM transmissions
Tech Specs
- Intermittent Torque: 201-300 lb-ft (401-500 Nm)
- 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 (Air Shift) or PowerShift (Pneumatic/Hydraulic)
- Transmission Compatibility: Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, RAM, and Other
- Continuous Torque: Up to 300 lb-ft (407 Nm) - Check application pages for actual torque ratings
- Shaft Power at 500 RPM: 29 HP (21 kW); at 1000 RPM: 57 HP (43 kW)
Additional Information
The Chelsea 272 Series consolidates and replaces the earlier 230, 231, 236, 238, 270, and 271 Series medium-duty hot-shift PTOs into a single versatile platform. The series offers nine speed ratios and eighteen shift options, making it adaptable to a wide range of vocational applications including towing and recovery, aerial work, construction equipment, and water trucks. The Wet-Spline option (where specified) extends PTO and pump shaft service life. The Smart Start feature is available for high-torque start-up conditions. Rotatable flanges allow flexible installation geometry. Refer to Chelsea application pages for confirmed torque ratings specific to your transmission and installation.Parts Manual: Chelsea 272 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
