The Chelsea 281 Series Power Take-Off, part number 281GPFJW-B8RF or 281GPFJWB8RF, is a hydraulically shifted (PowerShift) PTO designed for automatic transmissions with a 10-bolt aperture, including Allison transmissions. The 281 Series is an evolution of the Chelsea 280 Series, featuring a ductile iron bearing cap rated 117% stronger than the gray iron used in its predecessor, an o-ring sealing configuration between the housing and bearing cap for improved clamp load, and clutch pack steel discs increased 80% in thickness to resist premature wear. The series supports continuous operation and is rated for applications in fire and rescue, refuse, truck cranes, and pumper cleaner equipment. Call us to confirm proper fit for your specific transmission and application.
Features
10-bolt mounting aperture for Allison and compatible automatic transmissions
Hydraulic PowerShift (hot shift) design allows engagement without stopping
Ductile iron bearing cap, 117% stronger than gray iron predecessor
O-ring seal between housing and bearing cap improves clamp load and reduces vibrational effects
Clutch pack steel discs increased 80% in thickness for extended service life
Supports continuous-duty operation across nine available speed ratios
Tech Specs
- Mounting Type: 10-Bolt
- Shift Type: PowerShift (Hydraulic)
- Transmission Compatibility: Allison automatic transmissions
- Continuous Operation: Yes
- Series Continuous Torque Rating: 390 lb-ft (529 Nm) - verify actual torque against application data
- Output Power (Series): 56+ HP / 51+ kW
- Shaft Power (Series): 37 HP at 500 RPM; 74 HP at 1,000 RPM
- Lubricant System: Pressure Lube with Wet Spline option
- Bearing Cap Material: Ductile iron
