281GCFJP-B8RF Chelsea PTO Assembly

The Chelsea 281 Series Power Take-Off, part number 281GCFJP-B8RF or 281GCFJPB8RF, is a hydraulically shifted hot-shift PTO built for automatic transmissions with a 10-bolt aperture, including Allison and Caterpillar units. As an evolution of the 280 Series, the 281 introduces a ductile iron bearing cap rated 117% stronger than gray iron, an O-ring sealing configuration between the housing and bearing cap to improve clamp load, and an 80% thicker clutch pack to resist premature tooth wear. Nine speed ratios span low and high ranges. Rotatable cast-iron flanges reduce interference fitment issues, and the Wet Spline Lubrication option extends shaft life 7 to 10 times over dry operation. SmartStart reduces shock load at engagement, and the Electronic Overspeed Control (EOC) protects connected driven equipment. Sold by Pro Gear and Transmission. Call us to confirm proper fit for your application.

Features

Hydraulic PowerShift (hot-shift) operation for Allison and Caterpillar 10-bolt automatic transmissions
Ductile iron bearing cap, 117% stronger than gray iron predecessor
O-ring seal between housing and bearing cap improves clamp load and resists vibration
80% thicker steel clutch pack discs to resist premature tooth wear
Nine speed ratios including low and high speeds
Wet Spline Lubrication option provides 7 to 10 times greater shaft life
SmartStart reduces shock load at engagement; Electronic Overspeed Control (EOC) protects driven equipment
Rotatable cast-iron flanges reduce pump clearance and interference issues
Positive stop on driveline outputs eliminates oil seal damage from coupling

Tech Specs

• Mounting Type: 10-Bolt
• Shift Type: Hydraulic (PowerShift / Hot-Shift)
• Compatible Transmissions: Allison and Caterpillar automatic transmissions
• Continuous Operation: Yes
• Series Continuous Torque: 390 lb-ft (529 Nm) - verify actual rating on application pages
• Speed Ratios: Nine, including low and high
• Lubricant Options: Pressure Lube or Wet Spline
• SmartStart: Yes, for applicable configurations
• Electronic Overspeed Control (EOC): Included

Additional Information

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