The Chelsea 272ACKUP-G3RK or 272ACKUPG3RK is a 272 Series hot shift power take-off assembly built on a 6-bolt mounting pattern. The 272 Series supports intermittent torque ratings from 201 to 300 lb-ft (401-500 Nm) and delivers 56+ HP output. Shift options span pneumatic and hydraulic configurations, and the integral air control valve is included. The 272 Series consolidates the earlier 230, 231, 236, 238, 270, and 271 lines into one platform, offering nine speed ratios and eighteen shift options. Direct-mount outputs offer an optional Wet-Spline configuration for extended service life. Common applications include aerial equipment, towing and recovery, construction equipment, and water trucks. Contact Pro Gear and Transmission to confirm the right fit for your transmission and application.
Features
272 Series 6-bolt mounting pattern
Hot shift operation with pneumatic or hydraulic shift options
Intermittent torque rating: 201-300 lb-ft (401-500 Nm)
56+ HP output capacity
Integral air control valve included
Wet-Spline option available for extended PTO and pump shaft life
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 (1 in. with 1/4 in. key) or Round Shaft (1-1/4 in. with 5/16 in. key)
- Speed Ratios Available: 9
- Shift Options Available: 18
- Series: Chelsea 272
Additional Information
The Chelsea 272 Series was engineered to replace the 230, 231, 236, 238, 270, and 271 Series PTOs, consolidating those lines into a single medium-duty hot shift platform. Smart-Start technology is available on driveshaft output configurations to handle high-torque start-up conditions. The rotatable flange design aids installation flexibility across a range of transmission bolt patterns. Markets served include aerial, construction equipment, towing and recovery, water trucks, defense, material handling, and water drilling. Call Pro Gear and Transmission to confirm proper fit for your vehicle and transmission.Parts manual and diagrams: Chelsea 272 Series PTO parts list with prices
Equivalent PTOs:
Matched by full model number. Check the mounting, input gear and output against the unit you are replacing before you order. Look up any Chelsea, Muncie or Bezares number on our Muncie to Chelsea PTO cross reference.
