The Chelsea 281GCFJP-K5RY or 281GCFJPK5RY is a 281 Series Power Take-Off built for automatic transmissions with a 10-bolt aperture, commonly used on Allison and Caterpillar transmissions. It uses hydraulic PowerShift (hot-shift) engagement for continuous-duty operation. The 281 Series carries a 390 lb-ft continuous torque rating and offers nine speed ratios spanning low and high ranges. Outputs include SAE B and SAE C pump flanges, ISO 7652 pump flange, and driveline configurations. A ductile iron bearing cap is 117% stronger than gray iron, and an O-ring sealing configuration between the housing and bearing cap improves clamp load and reduces the effects of engine vibration. The clutch pack features steel discs 80% thicker than the predecessor 280 Series. Call us to confirm proper fit for your application.
Features
10-Bolt mounting for Allison and Caterpillar automatic transmissions
Hydraulic PowerShift (hot-shift) engagement rated for continuous-duty operation
390 lb-ft continuous torque rating across nine speed ratios including low and high ranges
Ductile iron bearing cap, 117% stronger than gray iron, with O-ring sealing for improved clamp load
Enhanced clutch pack with steel discs 80% thicker than the 280 Series predecessor
Wet Spline lubrication option provides 7 to 10 times greater output shaft life; SmartStart reduces shock load at engagement; Electronic Overspeed Control (EOC) protects driven equipment
Tech Specs
- Mounting: 10-Bolt
- Shift Type: Hydraulic PowerShift (Hot Shift)
- Continuous Torque: 390 lb-ft (529 Nm)
- Speed Ratios: Nine, including low and high
- Output Types: SAE B Pump Flange, SAE C Pump Flange, ISO 7652 Pump Flange, Driveline
- Transmission Compatibility: Allison and Caterpillar automatic transmissions (10-bolt aperture)
- Lubrication: Pressure Lube (P) or Wet Spline (W) option
- Output Power: 56+ HP / 51+ kW
- Shaft Power: 37 HP at 500 RPM, 74 HP at 1000 RPM
Additional Information
Parts Manual: Chelsea 281 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
