The Chelsea 272ZSJWX-R5RK or 272ZSJWXR5RK is a 272 Series hot shift power take-off assembly, mounting via a 6-bolt pattern. The 272 Series supports intermittent torque up to 300 lb-ft (401-500 Nm) and is rated for output power of 56+ HP. Shift options include pneumatic (air) or hydraulic actuation, with an integral air control valve included. The series offers rotatable flanges and a wet-spline output option for extended service life on direct-mount applications. Smart-Start capability handles high-torque start-up conditions when a driveshaft output is used. Common applications for the 272 Series include aerial equipment, towing and recovery, construction equipment, and water trucks. Pro Gear and Transmission carries this genuine Chelsea part. Call us to confirm proper fit for your application.
Features
272 Series 6-bolt mounting pattern
Hot shift design with air (pneumatic) or hydraulic shift options
Intermittent torque rating up to 300 lb-ft (401-500 Nm)
Output power 56+ HP
Integral air control valve included
Wet-spline and Smart-Start options available within the series
Tech Specs
- Mounting Type: 6-Bolt
- Shift Type: Pneumatic (Air) or Hydraulic
- Intermittent Torque: 201-300 lb-ft (401-500 Nm)
- Output Power: 56+ HP (41-50 kW)
- Output Shaft Type: Round Shaft with key (series offers 1 in. with 1/4 in. key or 1-1/4 in. with 5/16 in. key)
- Lubricant Options: No Pressure Lube (X), Pressure Lube (P), or Wet Spline (W)
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 platform. The series offers 9 speed ratios and 18 shift configurations. Direct-mount outputs feature an optional wet-spline interface for longer PTO and pump shaft life. Driveshaft output configurations can include Smart-Start for demanding high-torque start-up conditions. Typical markets served by the 272 Series include aerial, construction equipment, towing and recovery, water trucks, defense, and material handling. Part number 272ZSJWX-R5RK is also referenced as SP272ZSJWX-R5RK. NMFC classification: 128520 (Hydraulic PTOs, Pumps, Motors, etc.).Parts Manual: Chelsea 272 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
