The Chelsea 272 Series Power Take-Off Assembly, part number 272NBHVP-B5RB or 272NBHVPB5RB, is a 6-bolt hot-shift PTO built for medium-duty mobile equipment applications. It features a 1-1/4" round output shaft with a 5/16" key and supports both pneumatic and PowerShift (pneumatic/hydraulic) engagement. Intermittent torque capacity runs 201-300 lb-ft (401-500 Nm), with continuous torque rated up to 300 lb-ft (407 Nm) - verify actual ratings on the Chelsea application pages for your specific installation. Output power exceeds 56 HP (41-50 kW), with shaft power of 29 HP at 500 RPM and 57 HP at 1,000 RPM. Compatible transmissions include Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, and RAM. The 272 Series consolidates earlier Chelsea PTO lines - including the 230, 231, 236, 238, 270, and 271 - into one platform. Call us to confirm proper fit for your application.
Features
6-bolt hot-shift mounting configuration
1-1/4" round output shaft with 5/16" key
Pneumatic and PowerShift (pneumatic/hydraulic) shift options with integral air control valve
Intermittent torque: 201-300 lb-ft (401-500 Nm); continuous torque rated up to 300 lb-ft (407 Nm)
Shaft power: 29 HP at 500 RPM, 57 HP at 1,000 RPM
Compatible with Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, and RAM transmissions
Suited for aerial, construction, water truck, and towing/recovery applications
Tech Specs
- Intermittent Torque: 201-300 lb-ft (401-500 Nm)
- Continuous Torque: Up to 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
- Shift Type: Pneumatic, PowerShift (Pneumatic/Hydraulic)
- Output Power: 56+ HP (41-50 kW)
- Shaft Power: 29 HP (21 kW) at 500 RPM; 57 HP (43 kW) at 1,000 RPM
- Compatible Transmissions: Allison, Eaton/Fuller, Ford, Aisin, Volvo/Mack, RAM
Additional Information
The Chelsea 272 Series consolidates several earlier Chelsea medium-duty PTO lines - the 230, 231, 236, 238, 270, and 271 Series - into a single platform offering nine speed ratios and eighteen shift options. The series includes an integral air control valve, rotatable flanges, and an optional Wet-Spline design for extended PTO and pump shaft life. A Smart-Start option is available for high-torque start-up conditions. Typical market applications include aerial lifts, construction equipment, water trucks, towing and recovery vehicles, and defense and material handling equipment.Parts manual and diagrams: Chelsea 272 Series PTO parts list with prices
