The Chelsea 281 Series Power Take-Off, part number 281GDKVP-G8RK or 281GDKVPG8RK, is a hydraulically shifted hot-shift PTO engineered for automatic transmissions with a 10-bolt aperture, commonly Allison applications. It carries a single, continuous duty torque rating and nine speed ratios covering both low and high ranges. The ductile iron bearing cap is 117% stronger than gray iron, and an O-ring sealing configuration between the housing and bearing cap improves clamp load while reducing the vibrational effects common with modern engine designs. The clutch pack features steel discs 80% thicker than the predecessor 280 Series to resist premature tooth wear. Rotatable cast-iron flanges reduce interference fit issues, and a positive stop on driveline outputs eliminates oil seal damage from coupling. SmartStart reduces shock load at start-up, and Electronic Overspeed Control (EOC) protects driven equipment. A genuine Chelsea part from Pro Gear and Transmission. Call us to confirm proper fit for your application.
Features
Ductile iron bearing cap, 117% stronger than gray iron predecessor
O-ring sealing configuration between housing and bearing cap improves clamp load and reduces vibrational effects
Enhanced clutch pack with steel discs 80% thicker than 280 Series for reduced premature tooth wear
Nine speed ratios including low and high-speed options
Wet spline lubrication option provides 7 to 10 times greater shaft life
Electronic Overspeed Control (EOC) protects driven equipment; SmartStart reduces shock load at start-up
Tech Specs
- Mounting Type: 10-Bolt
- Shift Type: PowerShift (Hydraulic)
- Transmission Compatibility: Allison automatic transmissions
- Continuous Torque: 390 lb-ft (529 Nm) - verify actual rating on application page
- Output Power: 56+ HP (51+ kW)
- Shaft Power: 37 HP at 500 RPM, 74 HP at 1000 RPM
- Speed Ratios: Nine, including low and high
- Lubrication Options: Pressure Lube (P) or Wet Spline (W)
- Output Types: SAE B Pump Flange, SAE C Pump Flange, ISO 7652 Pump Flange, Driveline
- Continuous Operation: Yes
- Typical Markets: Fire and Rescue, Refuse, Truck Cranes, Pumper Cleaner
Additional Information
Parts Manual: Chelsea 281 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
