The Chelsea 281LGFJW-B5TK is a hydraulically shifted hot shift Power Take-Off from the Chelsea 281 Series, built for automatic transmissions with a 10-bolt aperture, including Allison and Caterpillar transmissions. The 281 Series features 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 steel clutch discs 80% thicker than the predecessor 280 Series to resist premature wear. Continuous-duty torque is rated at 390 lb-ft (529 Nm) for the series. Output options span SAE B and SAE C pump flanges, ISO and DIN flanges, and driveline configurations. A genuine Chelsea part, available from Pro Gear and Transmission.
Features
Hydraulic PowerShift (hot shift) operation for engagement under load
10-bolt mounting aperture for Allison and Caterpillar automatic transmissions
Ductile iron bearing cap, 117% stronger than the gray iron cap used in the predecessor 280 Series
O-ring seal between housing and bearing cap improves clamp load and reduces vibrational effects
Clutch pack steel discs increased 80% in thickness over the 280 Series for greater wear resistance
Series continuous torque rating: 390 lb-ft (529 Nm); wet spline lubrication option available for extended shaft life
Tech Specs
- Series: Chelsea 281 Series
- Shift Type: Hydraulic PowerShift (hot shift)
- Mounting: 10-bolt aperture
- Compatible Transmissions: Allison and Caterpillar automatic transmissions
- Continuous Torque (series rating): 390 lb-ft (529 Nm)
- Output Types: SAE B Pump Flange, SAE C Pump Flange, ISO 7652 Pump Flange, Driveline
- Continuous Operation: Yes
- Shaft Power (series): 37 HP at 500 RPM, 74 HP at 1000 RPM
