The Chelsea 272 Series Power Take-Off, part number 272ZSFNX-A3BD or 272ZSFNXA3BD, is a 6-bolt hot shift PTO designed for medium-duty applications in towing and recovery, aerial, construction, and water truck service. It mounts via a 6-bolt pattern and delivers output through a 1-1/4" round shaft with a 5/16" key. Shift actuation is pneumatic (air shift) with PowerShift (pneumatic/hydraulic) capability, and the unit includes an integral air control valve. Continuous torque capability reaches 300 lb-ft (407 Nm); intermittent torque is rated at 201-300 lb-ft (401-500 Nm). Compatible transmissions include Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, and RAM. Call us to confirm proper fit for your specific transmission and application.
Features
6-bolt mounting pattern for broad transmission compatibility
1-1/4" round output shaft with 5/16" key
Pneumatic (air shift) and PowerShift (pneumatic/hydraulic) shift options
Continuous torque rated up to 300 lb-ft (407 Nm); intermittent torque 201-300 lb-ft (401-500 Nm)
Integral air control valve included
Compatible with Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, and RAM transmissions
Tech Specs
- Intermittent Torque: 201-300 lb-ft (401-500 Nm)
- Continuous Torque: 300 lb-ft / 407 Nm (check application pages for actual torque ratings)
- Mounting Type: 6-Bolt
- Output Shaft Type: 1-1/4" Round with 5/16" Key
- Output Power: 56+ HP (41-50 kW)
- Shaft Power at 500 RPM: 29 HP (21 kW); at 1000 RPM: 57 HP (43 kW)
- Shift Type: Pneumatic / PowerShift (Pneumatic-Hydraulic)
- Transmission Compatibility: Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, RAM, Other
Additional Information
Parts Manual: Chelsea 272 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
