The Chelsea 272 Series Power Take-Off Assembly, part number 272XAAJX-B3BD or 272XAAJXB3BD, is a 6-bolt hot shift PTO built for medium-duty truck and equipment applications including aerial, construction, towing and recovery, and water truck work. The 272 Series supports intermittent torque ratings from 201 to 300 lb-ft (401-500 Nm) and is available with hydraulic or pneumatic air shift. The series features an integral air control valve, rotatable flanges, and an optional wet-spline output for extended PTO and pump shaft service life. Smart-Start capability handles high-torque start-up conditions. The 272 Series consolidates and replaces the older 230, 231, 236, 238, 270, and 271 Series designs. Call us to confirm proper fit for your application.
Features
Chelsea 272 Series 6-bolt hot shift PTO
Intermittent torque rating: 201-300 lb-ft (401-500 Nm)
Hydraulic or pneumatic (air) shift with integral air control valve
Rotatable flanges for flexible installation
Wet-spline output option for extended PTO and pump shaft life
Smart-Start option supports high-torque start-up conditions
Tech Specs
- Mounting Type: 6-Bolt
- Shift Type: Hydraulic or Pneumatic (Air)
- Intermittent Torque: 201-300 lb-ft (401-500 Nm)
- Output Power: 56+ HP (41-50 kW)
- Output Shaft Type: Round Shaft (1" with 1/4" key) or Round Shaft (1-1/4" with 5/16" key)
- Lubricant Options: X = No Pressure Lube, P = Pressure Lube, W = Wet Spline
Additional Information
The Chelsea 272 Series consolidates several earlier medium-duty hot shift PTO lines, including the 230, 231, 236, 238, 270, and 271 Series, into a single versatile platform. With nine available speed ratios and eighteen shift options, the 272 Series covers a broad range of direct-mount and driveshaft output configurations. Direct-mount setups can include the optional Wet-Spline interface for longer service life at the PTO-to-pump connection. Driveshaft output configurations can include the Smart-Start feature, which manages engagement under high-torque start-up loads common in towing, recovery, and aerial lift applications. The 272 Series is used across aerial, construction, defense, material handling, water drilling, and other mobile equipment markets.Parts Manual: Chelsea 272 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
