The Chelsea 272ZSFNX-A5BD is a 272 Series hot shift power take-off built on a 6-bolt mounting pattern. It accepts pneumatic or PowerShift (pneumatic/hydraulic) engagement and carries a continuous torque rating up to 300 lb-ft (407 Nm), with intermittent torque in the 201-300 lb-ft (401-500 Nm) range. The output shaft is a 1-1/4" round with a 5/16" key. Shaft power output reaches 57 HP (43 kW) at 1,000 RPM. Compatible transmission manufacturers include Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, and RAM, among others. The 272 Series consolidates earlier Chelsea medium-duty hot shift PTO families into one platform, making it one of the more flexible 6-bolt options for towing and recovery, aerial, construction, and water truck applications. Also referenced as 272ZSFNXA5BD. Call us to confirm proper fit for your application.
Features
6-bolt mounting pattern for broad transmission compatibility
Pneumatic or PowerShift (pneumatic/hydraulic) hot shift engagement
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)
57 HP (43 kW) shaft power output at 1,000 RPM
Compatible with Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, and RAM transmissions
Tech Specs
- Mounting Type: 6-Bolt
- Shift Type: Pneumatic, PowerShift (Pneumatic/Hydraulic)
- Output Shaft Type: 1-1/4" Round with 5/16" Key
- Continuous Torque: 300 lb-ft / 407 Nm (check application pages for actual torque ratings)
- Intermittent Torque: 201-300 lb-ft / 401-500 Nm
- Output Power: 56+ HP / 41-50 kW
- Shaft Power at 500 RPM: 29 HP / 21 kW
- Shaft Power at 1,000 RPM: 57 HP / 43 kW
- Transmission Compatibility: Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, RAM, and other manufacturers
- Dimensions (H x W x L): 15.75" x 12.5" x 14"
Additional Information
The Chelsea 272 Series consolidates the earlier 230, 231, 236, 238, 270, and 271 Series medium-duty hot shift PTOs into a single platform. The series offers nine speed ratios and eighteen shift options. Direct-mount configurations include an optional Wet-Spline design for extended PTO and pump shaft service life. Driveshaft output configurations are available with the Smart Start option, which is designed for high-torque start-up conditions. The integral air control valve is built into the unit. Common application markets include towing and recovery, aerial work platforms, construction equipment, and water trucks.Parts Manual: Chelsea 272 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
