The Chelsea 272 Series Power Take-Off Assembly, part number 272XBAJP-G5XD or 272XBAJPG5XD, is a 6-bolt hot shift PTO built for medium-duty applications across towing and recovery, aerial, construction, and water truck markets. It mounts to transmissions from Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, and RAM, among others. The output shaft is a 1-1/4" round shaft with a 5/16" key. Shift is pneumatic or PowerShift (pneumatic/hydraulic) with an integral air control valve. Continuous torque capacity reaches 300 lb-ft (407 Nm); intermittent torque is rated at 201-300 lb-ft (401-500 Nm). Output power exceeds 56 HP (41-50 kW), with shaft power of 29 HP at 500 RPM and 57 HP at 1,000 RPM. Call us to confirm proper fit for your transmission and application.
Features
6-bolt hot shift mounting compatible with Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, and RAM transmissions
Pneumatic or PowerShift (pneumatic/hydraulic) actuation with integral air control valve
1-1/4" round output shaft with 5/16" key
Continuous torque rating up to 300 lb-ft (407 Nm); intermittent torque 201-300 lb-ft (401-500 Nm)
Shaft power: 29 HP at 500 RPM, 57 HP at 1,000 RPM; output power 56+ HP (41-50 kW)
Suited for aerial, construction, towing and recovery, and water truck applications
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: 29 HP (21 kW) at 500 RPM; 57 HP (43 kW) at 1,000 RPM
- Shift Type: Pneumatic or PowerShift (Pneumatic/Hydraulic)
- Compatible Transmission Manufacturers: Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, RAM, and others
Additional Information
The Chelsea 272 Series consolidates several earlier medium-duty PTO lines, including the 230, 231, 236, 238, 270, and 271 Series, into a single, more versatile platform. The series offers nine speed ratios and eighteen shift options. Direct-mount outputs are available with optional Wet-Spline technology for extended PTO and pump shaft service life. Driveshaft output configurations include the Smart Start option, designed for high-torque start-up conditions. Rotatable flanges allow flexible installation positioning. The 272 Series is sold by Pro Gear and Transmission.Parts Manual: Chelsea 272 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
