The Chelsea 281 Series Power Take-Off, part number 281GGFJP-D8XV or 281GGFJPD8XV, is a hydraulically shifted hot-shift PTO engineered for automatic transmissions with a 10-bolt aperture, including Allison and Caterpillar applications. The 281 Series is an evolution of the 280 Series, featuring 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 reduce the effects of engine vibration, and clutch pack steel discs that are 80% thicker to resist premature tooth wear. Nine speed ratios cover both low and high-speed needs. Rotatable cast-iron flanges reduce interference clearance issues at the pump. Call us to confirm proper fit for your application.
The 281 Series is built for demanding mobile hydraulic markets including fire and rescue, truck cranes, pumper cleaners, and refuse vehicles. Rotatable cast-iron flanges reduce pump interference clearance issues. The Positive Stop feature on driveline outputs eliminates oil seal damage from coupling. A hose is included with the assembly. Electronic Overspeed Control (EOC) is available to protect driven equipment. Reference documents for this series include the 281/288 Series Parts List (HY25-2281-M1/US) and the 267/281/288/871/878 Series Owner's Manual.
Features
Ductile Iron Bearing Cap: 117% stronger than gray iron for durability under high vibration
Enhanced Clutch Pack: Steel discs 80% thicker than the predecessor 280 Series to resist premature tooth wear
O-Ring Sealing Configuration: Reduces vibrational effects between housing and bearing cap; improves clamp load
Nine Speed Ratios: Includes both low and high-speed options
Wet Spline Lubrication Option: Provides 7 to 10 times greater shaft life
Electronic Overspeed Control (EOC) and SmartStart: EOC protects driven equipment; SmartStart reduces shock load at engagement
Tech Specs
- Mounting Type: 10-Bolt
- Shift Type: PowerShift (Hydraulic Hot-Shift)
- Transmission Compatibility: Allison and Caterpillar automatic transmissions
- Continuous Torque: 390 lb-ft (529 Nm) - verify actual rating on application page
- Output Types: SAE B Pump Flange, SAE C Pump Flange, ISO 7652 Pump Flange, Driveline
- Speed Ratios: Nine, including low and high speeds
- Lubricant System: Pressure Lube (P) or Wet Spline (W) options
- Continuous Operation: Yes
Additional Information
The 281 Series is built for demanding mobile hydraulic markets including fire and rescue, truck cranes, pumper cleaners, and refuse vehicles. Rotatable cast-iron flanges reduce pump interference clearance issues. The Positive Stop feature on driveline outputs eliminates oil seal damage from coupling. A hose is included with the assembly. Electronic Overspeed Control (EOC) is available to protect driven equipment. Reference documents for this series include the 281/288 Series Parts List (HY25-2281-M1/US) and the 267/281/288/871/878 Series Owner's Manual.
Parts Manual: Chelsea 281 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
