Description
The Chelsea 281 Series Power Take-Off, part number 281GBFJP-D5XV or 281GBFJPD5XV, is a hydraulically shifted hot-shift PTO designed for automatic transmissions with a 10-bolt aperture, including Allison and Caterpillar applications. Built as an evolution of the 280 Series, the 281 introduces a ductile iron bearing cap rated 117% stronger than gray iron, an o-ring sealing configuration between the housing and bearing cap, and an 80% thicker clutch pack to resist premature tooth wear. Nine speed ratios cover both low and high ranges, and the optional Wet Spline Lubrication delivers 7 to 10 times greater shaft life. Rotatable cast-iron flanges reduce interference during pump installation. Sold by 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
Enhanced Clutch Pack – 80% thicker steel discs resist premature tooth wear from modern engine vibration
O-Ring Sealing Configuration – improves clamp load and reduces vibrational effects at the housing-to-cap joint
Nine Speed Ratios – covers both low and high speed ranges
Wet Spline Lubrication Option – provides 7 to 10 times greater shaft life
SmartStart – reduces shock load at start-up; Electronic Overspeed Control (EOC) protects driven equipment
Rotatable Cast-Iron Flanges with Positive Stop for driveline outputs – eliminates oil seal damage from coupling
Tech Specs
- Mounting Type: 10-Bolt
- Shift Type: PowerShift (Hydraulic Hot-Shift)
- Transmission Compatibility: Allison and Caterpillar automatic transmissions (10-bolt aperture)
- Continuous Operation: Yes
- Speed Ratios: Nine, including low and high speeds
- Lubrication Options: Pressure Lube (P) or Wet Spline (W)
- Output Types: SAE B Pump Flange, SAE C Pump Flange, ISO 7652 Pump Flange, Driveline
- Electronic Overspeed Control (EOC): Included
Additional Information
Parts Manual: Chelsea 281 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
