The Chelsea 281GTFJP-G3RS is a 281 Series hydraulically shifted PowerShift power take-off built for automatic transmissions with a 10-bolt aperture, including Allison applications. The 281 Series delivers a continuous duty torque rating and supports output options including SAE B and SAE C pump flanges, ISO 7652 pump flange, and driveline outputs. The ductile iron bearing cap is 117% stronger than gray iron, the clutch pack uses steel discs 80% thicker than the previous generation, and an o-ring sealing configuration between the housing and bearing cap improves clamp load. Nine speed ratios cover both low- and high-speed applications. Sold by Pro Gear and Transmission.
Features
Hydraulic PowerShift (hot shift) operation for engagement under load
10-bolt mounting for Allison and Caterpillar automatic transmissions
Ductile iron bearing cap, 117% stronger than gray iron predecessor
Clutch pack steel discs increased 80% in thickness for reduced tooth wear
O-ring seal between housing and bearing cap improves clamp load
Nine available speed ratios including low- and high-speed ranges
Tech Specs
- Mounting: 10-Bolt
- Shift Type: PowerShift (Hydraulic)
- Continuous Duty: Yes
- Transmission Compatibility: Allison (10-bolt aperture)
- Continuous Torque (series rating): 390 lb-ft / 529 Nm
- Output Options: SAE B Pump Flange, SAE C Pump Flange, ISO 7652 Pump Flange, Driveline
- Speed Ratios: Nine (including low and high speeds)
- Bearing Cap Material: Ductile Iron
Additional Information
The 281 Series is an evolution of the Chelsea 280 Series PTO, engineered to address vibrational loads from modern engine designs. Applicable markets include fire and rescue, truck cranes, pumper cleaners, and refuse trucks. The Electronic Overspeed Control (EOC) option protects driven equipment, and a wet spline lubrication option is available for extended shaft life. A SmartStart round shaft output option reduces shock load at engagement. Refer to Parker Chelsea documents 281/288 Series Parts List (HY25-2281-M1/US) and the 267/281/288/871/878 Series Owner's Manual for full application and parts data.Parts Manual: Chelsea 281 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
