281GCFJR-D5RY Chelsea PTO Assembly

The Chelsea 281 Series Power Take-Off, part number 281GCFJR-D5RY or 281GCFJRD5RY, is a hydraulically shifted hot-shift PTO engineered for automatic transmissions with a 10-bolt aperture, commonly used on Allison and Caterpillar transmissions. It delivers nine speed ratios spanning low and high ranges, with a single continuous-duty torque rating up to 390 lb-ft. The 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 resists vibrational effects from modern engine designs. The clutch pack uses steel discs that are 80% thicker than the predecessor 280 Series to resist premature tooth wear. Rotatable cast-iron flanges reduce interference fit issues, and the Wet Spline Lubrication option extends shaft life by 7 to 10 times. Electronic Overspeed Control (EOC) and the SmartStart feature are included to protect driven equipment and reduce start-up shock load. The hose is included, no separate order required. Call us to confirm proper fit for your application.

Features

Chelsea 281 Series hydraulic PowerShift (hot-shift) PTO for 10-bolt automatic transmission apertures
Ductile iron bearing cap rated 117% stronger than gray iron predecessor
Enhanced clutch pack with steel discs 80% thicker than 280 Series for reduced tooth wear
Nine speed ratios including low and high speeds; single continuous-duty torque rating up to 390 lb-ft
Wet Spline Lubrication option provides 7 to 10 times greater shaft life; hose included
Electronic Overspeed Control (EOC) and SmartStart for equipment protection and reduced start-up shock load

Tech Specs

• Mounting Type: 10-Bolt aperture (Allison and Caterpillar automatic transmissions)
• Shift Type: PowerShift (Hydraulic hot-shift)
• Continuous Torque Rating: 390 lb-ft (529 Nm)
• Speed Ratios: Nine, including low and high speeds
• Output Types: SAE B Pump Flange, SAE C Pump Flange, ISO 7652 Pump Flange, Driveline
• Lubrication: Pressure Lube or Wet Spline options available
• Continuous Operation: Yes
• Overspeed Protection: Electronic Overspeed Control (EOC)
• Start-up Protection: SmartStart feature

Additional Information

Parts manual and diagrams: Chelsea 281 Series PTO parts list with prices