The Chelsea 281GCFJP-B5SB is a 281 Series Power Take-Off built for automatic transmissions with a 10-bolt aperture, including Allison applications. It uses hydraulic PowerShift engagement for hot-shift operation, making it suited to continuous-duty cycles in fire and rescue, refuse, pumper-cleaner, and truck crane equipment. The 281 Series improves on the 280 Series with a ductile iron bearing cap rated 117% stronger than gray iron, an o-ring seal 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 are available across the series, and a wet spline lubrication option is offered for extended shaft life. Pro Gear and Transmission carries this genuine Chelsea part.
Features
10-bolt mounting for Allison and compatible automatic transmissions
Hydraulic PowerShift (hot shift) engagement for continuous-duty operation
Ductile iron bearing cap, 117% stronger than the previous gray iron cap
O-ring seal between housing and bearing cap for improved clamp load
Clutch-pack steel discs increased 80% in thickness to reduce premature wear
Nine speed ratios available across the 281 Series, including low and high speeds
Tech Specs
- Mounting Type: 10-Bolt
- Shift Type: PowerShift (Hydraulic), hot shift
- Continuous Operation: Yes
- Transmission Compatibility: Allison (10-bolt aperture)
- Series Continuous Torque Rating: 390 lb-ft (529 Nm) - verify actual rating on application pages
- Output Power (Series): 56+ HP, 51+ kW
- Shaft Power (Series): 37 HP at 500 RPM, 74 HP at 1000 RPM
- Lubrication Options: Pressure Lube or Wet Spline
- Speed Ratios: Nine available across the 281 Series
Additional Information
Parts Manual: Chelsea 281 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
