The Chelsea 281 Series Power Take-Off, part number 281GGFJP-B5SV or 281GGFJPB5SV, is a hydraulically shifted hot-shift PTO designed for automatic transmissions with a 10-bolt aperture, commonly used on Allison transmissions. It features a ductile iron bearing cap rated 117% stronger than gray iron and an o-ring sealing configuration between the housing and bearing cap that improves clamp load while reducing vibrational effects. The clutch pack uses steel discs that are 80% thicker than the predecessor 280 Series, resisting premature tooth wear. Nine speed ratios cover both low and high-speed applications. The Wet Spline Lubrication option delivers 7 to 10 times greater shaft life. SmartStart reduces shock load at engagement, and Electronic Overspeed Control (EOC) protects driven equipment. Cross-references: 280GGFJP-B5SV or 280GGFJPB5SV. Call us to confirm proper fit for your application.
Features
Ductile iron bearing cap, 117% stronger than gray iron
O-ring sealing configuration between housing and bearing cap reduces vibrational effects and improves clamp load
Enhanced clutch pack with steel discs 80% thicker than 280 Series predecessor
Nine speed ratios, including low and high speeds
Wet Spline Lubrication option provides 7 to 10 times greater shaft life
Electronic Overspeed Control (EOC) and SmartStart for shock-load reduction at engagement
Tech Specs
- Mounting Type: 10-Bolt
- Shift Type: PowerShift (Hydraulic)
- Transmission Manufacturer: Allison
- Continuous Operation: Yes
- Output Types Available: SAE B Pump Flange, SAE C Pump Flange, ISO 7652 Pump Flange, Driveline
- Speed Ratios: Nine (low and high)
- Lubricant Options: Pressure Lube, Wet Spline
- Cross Reference: 280GGFJP-B5SV or 280GGFJPB5SV
Additional Information
Parts Manual: Chelsea 281 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
