Description
The Chelsea 281 Series Power Take-Off, part number 281GDFJW-B8RS or 281GDFJWB8RS, is a hydraulically shifted hot-shift PTO engineered for automatic transmissions with a 10-bolt aperture, including Allison and Caterpillar transmissions. It mounts directly to the transmission and operates under continuous duty. 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 for improved 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 applications. Call us to confirm proper fit for your application.
Features
Ductile iron bearing cap – 117% stronger than gray iron for greater durability
Enhanced clutch pack with steel discs 80% thicker than the predecessor 280 Series design
O-ring sealing configuration between housing and bearing cap to improve clamp load and reduce vibrational effects
Nine speed ratios including low and high speeds
Rotatable cast-iron flanges reduce interference issues and improve pump clearance
Electronic Overspeed Control (EOC) protects driven equipment; SmartStart option reduces shock load at start-up
Tech Specs
- Mounting Type: 10-Bolt
- Shift Type: Hydraulic (PowerShift / Hot Shift)
- Compatible Transmissions: Allison and Caterpillar automatic transmissions
- Speed Ratios: Nine, including low and high speeds
- Continuous Operation: Yes
- Output Types: SAE B pump flange, SAE C pump flange, ISO 7652 pump flange, driveline
- Lubrication Options: Pressure lube (P) or Wet Spline (W)
- Wet Spline Benefit: 7 to 10 times greater shaft life compared to standard
- 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.
