The Chelsea 272HMLLP-B8RF or 272HMLLPB8RF is a 272 Series 6-bolt hot shift power take-off assembly from Parker Chelsea. The 272 Series consolidates several earlier medium-duty PTO lines into a single platform, supporting up to 300 lb-ft of intermittent torque and continuous-duty operation when de-rated per application guidelines. The series offers hydraulic and pneumatic shift options, an integral air control valve, and rotatable flanges for flexible installation. Direct-mount outputs are available with an optional Wet-Spline configuration for extended PTO and pump shaft service life, while driveshaft output configurations support the Smart-Start feature for high-torque start-up conditions. Common applications include aerial equipment, construction equipment, towing and recovery, and water trucks. Call us to confirm proper fit for your specific transmission and installation.
Features
Chelsea 272 Series 6-bolt hot shift PTO assembly
Up to 300 lb-ft intermittent torque capacity
Compatible with hydraulic or pneumatic shift operation
Integral air control valve included
Rotatable flanges for flexible mounting configurations
Optional Wet-Spline and Smart-Start features available within the 272 Series
Tech Specs
- Mounting Type: 6-Bolt
- Shift Type: Hydraulic or Pneumatic (Air)
- Intermittent Torque (Series): 201 to 300 lb-ft (401 to 500 Nm)
- Output Power (Series): 56+ HP (41 to 50 kW)
- Output Shaft Options (Series): Round Shaft 1 in. with 1/4 in. key, or Round Shaft 1-1/4 in. with 5/16 in. key
- Lubricant Options (Series): X = No Pressure Lube, P = Pressure Lube, W = Wet Spline
- Speed Ratios Available (Series): 9
- Shift Options Available (Series): 18
Additional Information
The Chelsea 272 Series was developed to replace and consolidate multiple earlier medium-duty hot shift PTO lines, including the 230, 231, 236, 238, 270, and 271 Series, making it a broad-coverage option for medium-duty applications. The series is used across aerial, construction equipment, water truck, towing and recovery, defense, and material handling markets. Parker Chelsea publishes a dedicated parts list (272 Series Parts List HY25-2272-M1_US) and an owner's manual covering the 272/282/852/885 Series, available through Parker's documentation library. Pro Gear and Transmission carries this genuine Chelsea part. Call us to confirm fitment with your specific transmission or installation configuration.Parts Manual: Chelsea 272 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
