The Chelsea 272 Series Power Take-Off Assembly, part number 272KGJKX-A5RK or 272KGJKXA5RK, is a 6-bolt hot-shift PTO built for medium-duty work in aerial, construction, towing and recovery, and water truck applications. It mounts to transmissions from Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, and RAM, among others. The output shaft is a 1-1/4" round with a 5/16" key. Shift options include pneumatic air shift and PowerShift (pneumatic/hydraulic), with an integral air control valve included. The 272 Series carries a continuous torque rating up to 300 lb-ft (407 Nm) and an intermittent rating of 201-300 lb-ft (401-500 Nm). Output power reaches 56+ HP, with shaft power of 57 HP at 1,000 RPM. Call us to confirm proper fit for your 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 and PowerShift (pneumatic/hydraulic) options
Integral air control valve included
Continuous torque rating up to 300 lb-ft (407 Nm); intermittent torque 201-300 lb-ft (401-500 Nm)
Output power 56+ HP; shaft power 57 HP at 1,000 RPM
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)
- Shaft Power: 29 HP (21 kW) at 500 RPM; 57 HP (43 kW) at 1,000 RPM
- Shift Type: Pneumatic (Air Shift) / PowerShift (Pneumatic/Hydraulic)
- Compatible Transmission Manufacturers: Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, RAM, Other
- Dimensions (H x W x L): 15.75" x 12.5" x 14"
Additional Information
The Chelsea 272 Series consolidates and replaces earlier Chelsea medium-duty hot-shift PTO families including the 230, 231, 236, 238, 270, and 271 Series into a single versatile platform. The series offers nine speed ratios and eighteen shift options. Direct-mount outputs are available with optional Wet-Spline technology for extended PTO and pump shaft life. Driveshaft output configurations in the 272 Series include Smart-Start for high-torque start-up conditions. Rotatable flanges allow flexible installation positioning. Common markets for this series include aerial work platforms, construction equipment, towing and recovery, and water trucks.Parts Manual: Chelsea 272 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
