The Chelsea 272 Series power take-off assembly, part number 272KGJKX-A3RK or 272KGJKXA3RK, is a 6-bolt hot shift PTO built for medium-duty commercial truck applications. The 272 Series supports intermittent torque ratings from 201 to 300 lb-ft and continuous output of 56-plus HP, with both pneumatic and hydraulic shift options and an integral air control valve. Rotatable flanges allow flexible installation, and the wet-spline output option extends service life of the PTO and pump shaft. Output shaft configurations in the 272 Series include 1-inch round with 1/4-inch key and 1-1/4-inch round with 5/16-inch key. The 272 Series consolidates earlier Chelsea 230, 231, 236, 238, 270, and 271 designs into a single versatile platform. Common applications include aerial, construction equipment, towing and recovery, and water truck service. Call us to confirm proper fit for your transmission and application.
Features
Chelsea 272 Series 6-bolt hot shift PTO assembly
Intermittent torque rating: 201 to 300 lb-ft (401 to 500 Nm)
Output power: 56+ HP (41 to 50 kW)
Pneumatic or hydraulic shift with integral air control valve
Output shaft options: 1-in. round with 1/4-in. key, or 1-1/4-in. round with 5/16-in. key
Rotatable flanges for flexible installation; wet-spline option available for extended shaft life
Tech Specs
- Mounting Type: 6-Bolt
- Shift Type: Pneumatic or Hydraulic
- Intermittent Torque: 201 to 300 lb-ft (401 to 500 Nm)
- Output Power: 56+ HP (41 to 50 kW)
- Output Shaft Options: 1-in. round (1/4-in. key); 1-1/4-in. round (5/16-in. key)
- Lubricant Codes: X = No Pressure Lube, P = Pressure Lube, W = Wet Spline
- Part Number: 272KGJKX-A3RK or 272KGJKXA3RK
Additional Information
The Chelsea 272 Series consolidates six earlier medium-duty hot shift PTO lines - the 230, 231, 236, 238, 270, and 271 - into a single platform offering nine speed ratios and eighteen shift options. Smart-Start technology is available on driveshaft output configurations to handle high-torque start-up conditions. Typical service markets include aerial lifts, construction equipment, towing and recovery, and water trucks. For installation and parts reference, Parker Chelsea publishes the 272 Series Parts List (HY25-2272-M1_US) and the 272/282/852/885 Series Owner's Manual.Parts Manual: Chelsea 272 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
