The Chelsea 272NAHVP-25RY is a 272 Series 6-bolt hot shift power take-off assembly from Parker Chelsea. The 272 Series consolidates several earlier Chelsea medium-duty PTO lines into one platform, offering nine speed ratios and eighteen shift configurations. This unit is built for intermittent torque up to 300 lb-ft and continuous-duty applications in aerial, construction, towing and recovery, and water truck service. The 6-bolt mounting pattern, integral air control valve, and rotatable flanges make installation flexible across a wide range of transmission applications. Output options in the 272 Series include round shaft with 1-1/4 in. and 5/16 in. key. Call us to confirm proper fit for your application.
Features
6-bolt mounting pattern for broad transmission compatibility
Hot shift design with pneumatic or hydraulic shift options
Integral air control valve included
Intermittent torque capacity up to 300 lb-ft (401-500 Nm)
Rotatable flanges for flexible installation
Smart Start option supports high-torque start-up conditions
Tech Specs
- Mounting Type: 6-Bolt
- Shift Type: Pneumatic or Hydraulic
- Intermittent Torque: 201-300 lb-ft (401-500 Nm)
- Output Power: 56+ HP (41-50 kW)
- Output Shaft Type: Round Shaft with 1-1/4 in. - 5/16 in. Key
- Lubricant Code: P = Pressure Lube
- Speed Ratios Available (Series): 9
- Shift Options Available (Series): 18
Additional Information
The Chelsea 272 Series consolidates and replaces the earlier 230, 231, 236, 238, 270, and 271 Series medium-duty hot shift PTOs into a single unified platform. The 272NAHVP-25RY is suited for aerial equipment, construction equipment, towing and recovery, and water truck applications. Wet-Spline technology is available within the series for extended PTO and pump shaft service life. The Smart Start feature addresses high-torque start-up conditions common in demanding mobile equipment installations. Part number 272NAHVP-25RY is also referenced as 272NAHVP25RY.Parts Manual: Chelsea 272 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
