The Chelsea 272 Series PTO Assembly, part number 272ZKJWX-A3BD or 272ZKJWXA3BD, is a 6-bolt hot shift power take-off engineered for medium-duty commercial truck applications including aerial, construction equipment, towing and recovery, and water trucks. The 272 Series supports intermittent torque ratings from 201 to 300 lb-ft (401-500 Nm) and delivers 56+ HP output. Both air (pneumatic) and hydraulic shift configurations are available within the series, with an integral air control valve included. Output shaft options within the series include round shaft with 1-inch, 1/4-inch key and 1-1/4-inch, 5/16-inch key configurations. The 272 Series consolidates and replaces the earlier Chelsea 230, 231, 236, 238, 270, and 271 series. Call us to confirm proper fit and shift configuration for your specific transmission and application.
Features
Chelsea 272 Series 6-bolt mounting hot shift PTO
Intermittent torque rating: 201-300 lb-ft (401-500 Nm)
Output power: 56+ HP (41-50 kW)
Air (pneumatic) or hydraulic shift with integral air control valve
Round shaft output: 1-in. with 1/4-in. key or 1-1/4-in. with 5/16-in. key
Consolidates and replaces Chelsea 230, 231, 236, 238, 270, and 271 series
Tech Specs
- Mounting Type: 6-Bolt
- Shift Type: Pneumatic (Air) or Hydraulic
- Intermittent Torque: 201-300 lb-ft (401-500 Nm)
- Output Power: 56+ HP (41-50 kW)
- Output Shaft Type: Round Shaft - 1-in. with 1/4-in. key; Round Shaft - 1-1/4-in. with 5/16-in. key
- Dimensions (H x W x L): 15 x 12 x 14 in.
Additional Information
The Chelsea 272 Series consolidates six prior Chelsea medium-duty hot shift PTO series - the 230, 231, 236, 238, 270, and 271 - into a single platform. The series offers nine speed ratios and eighteen shift options. Optional Wet-Spline technology is available on direct-mount configurations to extend PTO and pump shaft service life. Driveshaft output variants include the Smart Start option, designed for high-torque start-up conditions. Rotatable flanges provide installation flexibility across a wide range of truck transmission and bodybuilder configurations. Common markets include aerial work platforms, construction equipment, water trucks, towing and recovery, material handling, and defense applications. Part number 272ZKJWX-A3BD is also referenced as SP272ZKJWX-A3BD. Not sure this is the right PTO for your transmission? Give us a call.Parts Manual: Chelsea 272 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
