The Chelsea 281 Series Power Take-Off, part number 281GKFJP-G5SV or 281GKFJPG5SV, is a hydraulically shifted hot shift PTO designed for automatic transmissions with a 10-bolt aperture, commonly found on Allison transmissions. The 281 Series builds on the proven 280 Series platform with 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 clutch pack steel discs increased 80% in thickness to resist premature tooth wear. Nine speed ratios cover both low and high-speed applications. The wet spline lubrication option extends shaft life by 7 to 10 times. SmartStart reduces shock load at start-up, and Electronic Overspeed Control (EOC) protects driven equipment. Typical markets include fire and rescue, truck cranes, pumper cleaner, and refuse. Call us to confirm proper fit for your application.
Features
Ductile iron bearing cap - 117% stronger than gray iron versus the prior 280 Series cap
Enhanced clutch pack with steel discs 80% thicker to resist premature tooth wear
O-ring sealing configuration between housing and bearing cap improves clamp load and reduces vibrational effects
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 reduce shock load and protect driven equipment
Tech Specs
- Mounting Type: 10-Bolt
- Shift Type: PowerShift (Hydraulic)
- Transmission Application: Allison automatic transmissions
- Continuous Operation: Yes
- Output Types Available: SAE B pump flange, SAE C pump flange, ISO 7652 pump flange, driveline
- Speed Ratios: Nine, including low and high speeds
- Lubrication Option: Wet spline (7 to 10 times greater shaft life)
- Part Number: 281GKFJP-G5SV or 281GKFJPG5SV
Additional Information
Parts Manual: Chelsea 281 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
