281GTFJP-G5RK Chelsea PTO Assembly

The Chelsea 281 Series Power Take-Off, part number 281GTFJP-G5RK or 281GTFJPG5RK, is a hydraulically shifted hot-shift PTO built for automatic transmissions with a 10-bolt aperture, including Allison transmissions. It offers nine speed ratios spanning low and high ranges and supports continuous-duty operation. 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 while reducing vibrational effects. The clutch pack features steel discs that are 80% thicker than the predecessor 280 Series, resisting premature tooth wear. Rotatable cast-iron flanges reduce interference fitment issues, and the Wet Spline Lubrication option delivers 7 to 10 times greater shaft life. Optional Electronic Overspeed Control (EOC) protects driven equipment. Call us to confirm proper fit for your application.

Features

Hydraulic PowerShift (hot-shift) operation, 10-bolt mounting for Allison automatic transmissions
Ductile iron bearing cap, 117% stronger than gray iron predecessor
O-ring sealing configuration between housing and bearing cap for improved clamp load and reduced vibration
80% thicker steel discs in the clutch pack compared to the 280 Series for extended service life
Nine speed ratios including low and high speeds; rated for continuous-duty use
Wet Spline Lubrication option extends shaft life 7 to 10 times; SmartStart reduces shock load at engagement
Electronic Overspeed Control (EOC) protects driven equipment; Positive Stop for driveline outputs eliminates oil seal damage

Tech Specs

• Mounting Type: 10-Bolt
• Shift Type: Hydraulic (PowerShift / Hot-Shift)
• Compatible Transmissions: Allison automatic (10-bolt aperture)
• Continuous-Duty Operation: Yes
• Speed Ratios: Nine, including low and high
• Bearing Cap Material: Ductile Iron (117% stronger than gray iron)
• Clutch Pack: Steel discs 80% thicker than 280 Series
• Lubrication Option: Wet Spline (7 to 10x greater shaft life)
• SmartStart: Available for shock-load reduction at start-up
• Electronic Overspeed Control (EOC): Available

Additional Information

Parts Manual: Chelsea 281 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.