The Chelsea 281GKFJP-N5AC is a 281 Series PowerShift (hydraulic) power take-off built for automatic transmissions with a 10-bolt aperture, including Allison applications. The 281 Series is designed for continuous-duty operation and carries a series continuous torque rating of 390 lb-ft. It mounts via a 10-bolt flange and is engineered for demanding vocational cycles found in refuse, fire and rescue, pumper cleaner, and truck crane service. The 281 Series represents 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, and an 80% increase in clutch pack steel disc thickness to resist premature wear.
Features
281 Series PowerShift (hydraulic) hot-shift operation for continuous duty
10-bolt mounting aperture fits Allison and Caterpillar automatic transmissions
390 lb-ft series continuous torque rating
Ductile iron bearing cap, 117% stronger than gray iron predecessor
O-ring seal between housing and bearing cap improves clamp load and reduces vibration effects
80% thicker steel clutch pack discs to resist premature tooth wear
Tech Specs
- Mounting Type: 10-Bolt
- Shift Type: PowerShift (Hydraulic) Hot Shift
- Continuous Operation: Yes
- Series Continuous Torque: 390 lb-ft (529 Nm)
- Transmission Compatibility: Allison automatic transmissions (10-bolt aperture)
- Bearing Cap Material: Ductile Iron
- Output Options: SAE B Pump Flange, SAE C Pump Flange, ISO 7652 Pump Flange, Driveline
Additional Information
Parts Manual: Chelsea 281 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
