The Chelsea 272 Series PTO Assembly, part number 272GBAJP-B5RK or 272GBAJPB5RK, is a 6-bolt hot shift power take-off designed for medium-duty commercial truck applications. The 272 Series supports up to 300 lb-ft of intermittent torque and is available with pneumatic or hydraulic shift, with an integral air control valve included. Output shaft options in the 272 Series include round shaft configurations with keyway drive. The series supports both direct-mount and driveshaft output arrangements, with a Wet-Spline option for extended PTO and pump shaft service life, and Smart-Start capability for high-torque engagement conditions. Common applications for the 272 Series include aerial equipment, construction, water trucks, and towing and recovery. Call us to confirm proper fit for your transmission and application.
Features
Chelsea 272 Series 6-bolt mounting configuration
Hot shift operation with pneumatic or hydraulic shift options
Integral air control valve included
Up to 300 lb-ft intermittent torque capacity
Wet-Spline option for extended PTO and pump shaft service life
Smart-Start option supports high-torque start-up conditions
Tech Specs
- Mounting Type: 6-Bolt
- Shift Type: Pneumatic or Hydraulic
- Intermittent Torque (Series): 201-300 lb-ft (401-500 Nm)
- Output Shaft Type: Round Shaft with keyway (1 in. with 1/4 in. key, or 1-1/4 in. with 5/16 in. key)
- Output Power (Series): 56+ HP (41-50 kW)
- Lubricant Options: No Pressure Lube (X), Pressure Lube (P), or Wet Spline (W)
- Part Number: 272GBAJP-B5RK or 272GBAJPB5RK
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, unified platform. The series offers nine speed ratios and eighteen shift options, giving this family broad compatibility across vocational truck builds. Rotatable flanges allow flexible mounting orientation at installation. Applications served by the 272 Series include aerial, construction equipment, water trucks, towing and recovery, material handling, and defense vehicles.Parts manual and diagrams: Chelsea 272 Series PTO parts list with prices
