Description
The Chelsea 281 Series Power Take-Off, part number 281GTFJW-B3RF or 281GTFJWB3RF, is a hydraulically shifted (PowerShift) PTO designed for 10-bolt aperture automatic transmissions, including Allison applications. Built as an evolution of the 280 Series, it features a ductile iron bearing cap rated 117% stronger than gray iron, an o-ring sealing configuration between the housing and bearing cap to improve clamp load, and an enhanced clutch pack with 80% thicker steel discs to resist premature tooth wear. Nine speed ratios cover both low and high speed applications. The series carries a continuous torque rating of 390 lb-ft (529 Nm). Wet Spline lubrication is included, providing 7 to 10 times greater shaft life. Call us to confirm proper fit for your application.
Features
10-Bolt mounting for Allison automatic transmissions
Hydraulic PowerShift (hot shift) operation for engagement under load
Ductile iron bearing cap, 117% stronger than gray iron
Enhanced clutch pack with 80% thicker steel discs to resist premature tooth wear
Nine speed ratios including low and high speeds
Wet Spline lubrication option provides 7 to 10 times greater shaft life
Electronic Overspeed Control (EOC) protects driven equipment
SmartStart reduces shock load at start-up for qualifying applications
Tech Specs
- Mounting Type: 10-Bolt
- Shift Type: Hydraulic PowerShift (hot shift)
- Compatible Transmission: Allison automatic transmissions
- Continuous Torque Rating: 390 lb-ft (529 Nm)
- Speed Ratios: Nine, including low and high
- Lubrication: Wet Spline (W) option
- Output Types: SAE B Pump Flange, SAE C Pump Flange, ISO 7652 Pump Flange, Driveline
- Continuous Operation: Yes
Additional Information
Parts Manual: Chelsea 281 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
