The Chelsea 272 Series power take-off assembly, part number 272XBAJW-H5RF or 272XBAJWH5RF, is a 6-bolt hot shift PTO designed for medium-duty applications including aerial work, construction equipment, towing and recovery, and water trucks. The 272 Series supports up to 300 lb-ft of intermittent torque and features an integral air control valve. Shift options include pneumatic and hydraulic configurations, and the series offers nine speed ratios across 18 shift options. The wet-spline design (designated by the "W" in the part number) helps extend PTO and pump shaft service life. Output shaft options within the 272 Series include round shaft with 1-inch or 1-1/4-inch configurations. Call us to confirm proper fit for your transmission and application.
Features
6-bolt mounting configuration for medium-duty hot shift PTO applications
Hot shift operation with pneumatic or hydraulic shift options
Integral air control valve included with assembly
Wet-spline output design helps extend PTO and pump shaft life
Supports up to 300 lb-ft intermittent torque (272 Series rating)
Suited for aerial, construction, towing and recovery, and water truck applications
Tech Specs
- Mounting Type: 6-Bolt
- Shift Type: Pneumatic or Hydraulic (Hot Shift)
- Intermittent Torque (Series): 201 to 300 lb-ft (401 to 500 Nm)
- Output Shaft Type: Round Shaft with keyway (series offers 1-inch and 1-1/4-inch round shaft options)
- Lubricant Designation: W = Wet Spline
- Speed Ratios Available (Series): 9 ratios, 18 shift options
- Part Number: 272XBAJW-H5RF or 272XBAJWH5RF
Additional Information
The Chelsea 272 Series consolidates several earlier Chelsea medium-duty hot shift PTO lines, including the 230, 231, 236, 238, 270, and 271 series, into a single platform. The Smart Start option available within the 272 Series is designed for high-torque start-up conditions. Rotatable flanges allow flexible installation positioning. The series carries output power ratings of 56 HP and above (41 to 50 kW range within the series). For application-specific torque ratings, continuous-duty use requires a 30% de-rate from the intermittent rating.Parts Manual: Chelsea 272 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
