The Chelsea 272 Series PTO Assembly, part number 272XBAJP-B5BD or 272XBAJPB5BD, is a 6-bolt hot shift power take-off built for medium-duty mobile equipment. The 272 Series supports intermittent torque ratings from 201 to 300 lb-ft (401-500 Nm) and delivers 56 or more horsepower output. Available with pneumatic or hydraulic shift, it includes an integral air control valve and features rotatable flanges for flexible installation. Output shaft options include a 1-inch round shaft with 1/4-inch key or a 1-1/4-inch round shaft with 5/16-inch key. The series supports nine speed ratios and eighteen shift configurations, covering aerial, construction, towing and recovery, and water truck applications. A genuine Chelsea part, sold by Pro Gear and Transmission. Call us to confirm proper fit for your application.
Features
6-bolt mounting, hot shift design with pneumatic or hydraulic shift options
Integral air control valve included
Intermittent torque rating: 201 to 300 lb-ft (401-500 Nm)
Output power: 56+ HP (41-50 kW)
Output shaft: 1-inch round with 1/4-inch key, or 1-1/4-inch round with 5/16-inch key
Nine speed ratios and eighteen shift configurations available in the 272 Series
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 Type: Round Shaft - 1 inch with 1/4-inch key, or 1-1/4 inch with 5/16-inch key
- Speed Ratios Available (Series): 9
- Shift Configurations Available (Series): 18
- Lubricant Options: X = No Pressure Lube, P = Pressure Lube, W = Wet Spline
Additional Information
The Chelsea 272 Series consolidates the earlier 230, 231, 236, 238, 270, and 271 Series into a single platform, simplifying parts and service across medium-duty hot shift PTO applications. Direct mount outputs offer an optional Wet-Spline configuration for extended PTO and pump shaft service life. Driveshaft outputs can be specified with the Smart-Start option, designed for high-torque start-up conditions. Typical application markets include aerial equipment, 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.
