The Chelsea 272 Series power take-off assembly, part number 272ZMJWX-A3XD or 272ZMJWXA3XD, is a 6-bolt hot shift PTO designed for medium-duty truck applications. The 272 Series consolidates several earlier Chelsea PTO lines into one platform, delivering intermittent torque capability up to 300 lb-ft (401-500 Nm). It is available with either pneumatic (air) or hydraulic shift and includes an integral air control valve. The 272 Series supports nine speed ratios and eighteen shift configurations, giving fleets broad compatibility across towing and recovery, aerial, construction, and water truck applications. Call us to confirm proper fit for your specific transmission and application.
Features
6-bolt mounting configuration for medium-duty hot shift applications
Intermittent torque rating up to 300 lb-ft (401-500 Nm)
Compatible with pneumatic (air) shift or hydraulic shift
Includes integral air control valve
Nine speed ratios and eighteen shift configurations available within the 272 Series
Wet-Spline option for extended PTO and pump shaft life; Smart-Start option for high-torque start-up conditions
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 with 1" - 1/4" key, or Round Shaft with 1-1/4" - 5/16" key
- Speed Ratios Available (Series): 9
- Shift Configurations Available (Series): 18
Additional Information
Parts Manual: Chelsea 272 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
