The Chelsea 272XPESX-A3BD or 272XPESXA3BD is a 272 Series hot shift power take-off assembly with a 6-bolt mounting configuration. It features a 1-1/4" round output shaft with a 5/16" key and shifts pneumatically or via PowerShift (pneumatic/hydraulic). The 272 Series carries an intermittent torque rating of 201-300 lb-ft (401-500 Nm) and a continuous torque capability up to 300 lb-ft (407 Nm), verify actual ratings on the Chelsea application pages for your specific transmission. Compatible transmissions span a wide range, including Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, and RAM platforms. The 272 Series consolidates and replaces the earlier 230, 231, 236, 238, 270, and 271 Chelsea PTO series. Call us to confirm proper fit for your application.
Features
6-bolt mounting configuration for broad transmission compatibility
1-1/4" round output shaft with 5/16" key
Pneumatic or PowerShift (pneumatic/hydraulic) shift operation
Intermittent torque rating: 201-300 lb-ft (401-500 Nm)
Continuous torque capability up to 300 lb-ft (407 Nm), confirm actual rating on Chelsea application pages
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: Up to 300 lb-ft (407 Nm), Check Chelsea Application Pages for Actual Rating
- 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 or PowerShift (Pneumatic/Hydraulic)
- Compatible Transmissions: Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, RAM
Additional Information
The Chelsea 272 Series was engineered to consolidate several earlier medium-duty hot shift PTO lines, the 230, 231, 236, 238, 270, and 271, into a single versatile platform. The series offers nine speed ratios and eighteen shift options, giving fleet and equipment operators wide flexibility across upfit configurations. The 272 Series is used across aerial, construction, towing and recovery, and water truck markets. Direct-mount output options include an optional Wet-Spline configuration for extended PTO and pump shaft service life. Driveshaft output variants are available with Smart-Start for high-torque start-up conditions. The PTO includes an integral air control valve as standard. For a full breakdown of speed ratios and transmission-specific mounting requirements, consult the Chelsea 272 Series application pages or contact Pro Gear and Transmission for guidance on your specific truck.Parts Manual: Chelsea 272 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
