Chelsea part number 281GCKVP-B8RY or 281GCKVPB8RY is a 281 Series PowerShift (hydraulic) hot-shift Power Take-Off designed for automatic transmissions with a 10-bolt aperture, including Allison and Caterpillar applications. The 281 Series is an evolution of the 280 Series, with 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 an enhanced clutch pack with 80% thicker steel discs to resist premature tooth wear. Nine speed ratios cover both low and high-speed demands. Rotatable cast-iron flanges reduce interference issues, and the Wet Spline Lubrication option delivers 7 to 10 times greater shaft life. SmartStart reduces shock load at start-up, and Electronic Overspeed Control (EOC) safeguards 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 for increased durability
O-ring sealing configuration between housing and bearing cap improves clamp load and resists vibrational effects
Enhanced Clutch Pack - steel discs are 80% thicker to resist premature tooth wear
Nine speed ratios available, including low and high-speed ranges
Rotatable cast-iron flanges reduce pump clearance interference
Wet Spline Lubrication option provides 7 to 10 times greater shaft life
SmartStart reduces shock load at engagement; Electronic Overspeed Control (EOC) protects driven equipment
Tech Specs
- Mounting Type: 10-Bolt
- Shift Type: PowerShift (Hydraulic) Hot-Shift
- Compatible Transmission: Allison and Caterpillar automatic transmissions
- Continuous Torque: 390 lb-ft (529 Nm) - verify actual rating on application pages
- Output Types: SAE B Pump Flange, SAE C Pump Flange, ISO 7652 Pump Flange, Driveline
- Speed Ratios: Nine, including low and high speeds
- Lubrication Options: Pressure Lube (P), Wet Spline (W)
- 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.
