The Chelsea 281 Series Power Take-Off, part number 281GCKVP-D5RK or 281GCKVPD5RK, is a hydraulically shifted hot shift PTO designed for automatic transmissions with a 10-bolt aperture, including Allison and Caterpillar transmissions. This series features a ductile iron bearing cap rated 117% stronger than gray iron, an o-ring sealing configuration between the housing and bearing cap for improved clamp load, and an 80% thicker clutch pack steel disc design to resist premature tooth wear. Nine speed ratios cover both low and high speed applications, and the Wet Spline Lubrication option extends shaft life by 7 to 10 times. The SmartStart feature reduces shock load at start-up, while Electronic Overspeed Control (EOC) protects driven equipment. Common markets include fire and rescue, refuse, truck cranes, and pumper cleaner. Call us to confirm proper fit for your application.
Features
Hydraulic hot shift (PowerShift) operation for engagement under load on Allison and Caterpillar automatic transmissions
Ductile iron bearing cap, 117% stronger than gray iron predecessor
O-ring sealing configuration between housing and bearing cap reduces vibration effects and improves clamp load
80% thicker steel discs in clutch pack to resist premature tooth wear
Nine speed ratios including low and high speeds; continuous operation rated
Wet Spline Lubrication option provides 7 to 10 times greater shaft life; SmartStart reduces start-up shock load; Electronic Overspeed Control (EOC) protects driven equipment
Tech Specs
- Mounting Type: 10-Bolt
- Shift Type: PowerShift (Hydraulic)
- Transmission Compatibility: Allison automatic transmissions (10-bolt aperture)
- Continuous Torque: 390 lb-ft (529 Nm) - see application pages for actual ratings
- Output Types: SAE B Pump Flange, SAE C Pump Flange, ISO 7652 Pump Flange, Driveline
- Speed Ratios: Nine, including low and high speeds
- Lubricant Options: Pressure Lube (P) or Wet Spline (W)
- Continuous Operation: Yes
Additional Information
Parts Manual: Chelsea 281 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
