The Chelsea 281GGFJP-E5RK or 281GGFJPE5RK is a 281 Series PowerShift (hydraulic) hot-shift power take-off engineered for automatic transmissions with a 10-bolt aperture, including Allison and Caterpillar units. The 281 Series carries a continuous torque rating up to 390 lb-ft (529 Nm) and offers nine speed ratios spanning low and high ranges. Key construction upgrades over its predecessor include a ductile iron bearing cap rated 117% stronger than gray iron and an 80% thicker clutch pack steel disc to resist premature tooth wear. An O-ring sealing configuration between the housing and bearing cap improves clamp load and reduces the vibrational effects of modern engine designs. Rotatable cast-iron flanges reduce interference clearance issues, and a wet spline lubrication option extends shaft life 7 to 10 times. SmartStart reduces shock load at engagement, while Electronic Overspeed Control (EOC) protects driven equipment. Call us to confirm proper fit for your transmission and application.
Features
Hydraulic PowerShift (hot-shift) operation for 10-bolt Allison and Caterpillar automatic transmissions
Ductile iron bearing cap, 117% stronger than gray iron
80% thicker steel discs in clutch pack to resist premature tooth wear
O-ring sealing configuration between housing and bearing cap reduces vibration effects and improves clamp load
Nine speed ratios including low and high speeds; continuous torque rating up to 390 lb-ft (529 Nm)
SmartStart reduces engagement shock load; Electronic Overspeed Control (EOC) protects driven equipment
Tech Specs
- Mounting Type: 10-Bolt
- Shift Type: PowerShift (Hydraulic Hot-Shift)
- Continuous Torque: 390 lb-ft (529 Nm)
- Speed Ratios: Nine, including low and high speeds
- Transmission Compatibility: Allison and Caterpillar automatic transmissions
- Output Types: SAE B Pump Flange, SAE C Pump Flange, ISO 7652 Pump Flange, Driveline
- Lubrication: Pressure Lube (P) or Wet Spline (W) option
- Continuous Operation: Yes
- Markets: Fire and Rescue, Truck Cranes, Pumper Cleaner, Refuse
Additional Information
Parts Manual: Chelsea 281 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
