281GBFJP-G3RK Chelsea PTO Assembly

The Chelsea 281 Series Power Take-Off, part number 281GBFJP-G3RK or 281GBFJPG3RK, is a hydraulically shifted hot-shift PTO designed for automatic transmissions with a 10-bolt aperture, most commonly Allison and Caterpillar transmissions. The 281 Series carries a continuous torque rating of 390 lb-ft (529 Nm) and supports nine speed ratios spanning both low and high ranges. It features a ductile iron bearing cap rated 117% stronger than gray iron, an O-ring sealing configuration between the housing and bearing cap for improved clamp load, and an 80% thicker steel clutch pack to resist premature wear. Rotatable cast-iron flanges reduce pump clearance issues, and a Wet Spline Lubrication option can extend shaft service life 7 to 10 times over standard configurations. SmartStart reduces shock load at engagement, and Electronic Overspeed Control (EOC) protects connected driven equipment. A genuine Chelsea part from Pro Gear and Transmission. Call us to confirm proper fit for your transmission and application.

Features

Hydraulic PowerShift (hot-shift) operation for Allison and Caterpillar 10-bolt automatic transmissions
Ductile iron bearing cap, 117% stronger than gray iron, for extended durability
O-ring sealing between housing and bearing cap improves clamp load and resists vibration
80% thicker steel discs in the clutch pack reduce premature tooth wear
Nine speed ratios including low and high speeds; 390 lb-ft (529 Nm) continuous torque rating
Wet Spline Lubrication option delivers 7 to 10 times greater shaft life; SmartStart reduces engagement shock load
Electronic Overspeed Control (EOC) protects driven equipment from overspeed damage

Tech Specs

• Mounting Type: 10-Bolt
• Shift Type: Hydraulic PowerShift (Hot-Shift)
• Transmission Compatibility: Allison and Caterpillar automatic transmissions
• Continuous Torque: 390 lb-ft (529 Nm)
• Speed Ratios: Nine (includes 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 option
• Series: Chelsea 281 Series (evolution of the 280 Series)

Additional Information

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