The Chelsea 281GCFJW-D5RK is a 281 Series PowerShift (hydraulic) hot shift power take-off designed for automatic transmissions with a 10-bolt aperture, including Allison and Caterpillar transmissions. The 281 Series is the evolution of the top-selling 280 Series, featuring a ductile iron bearing cap rated 117% stronger than the gray iron cap it replaces, an o-ring sealing configuration between the housing and bearing cap for improved clamp load, and clutch pack steel discs that are 80% thicker to resist premature tooth wear. Nine speed ratios are available across the series, including low- and high-speed options. The series is rated for continuous operation with a continuous torque rating of 390 lb-ft. Available from Pro Gear and Transmission.
Features
Chelsea 281 Series PowerShift (hydraulic) hot shift PTO
10-bolt mounting aperture for Allison and Caterpillar automatic transmissions
Ductile iron bearing cap, 117% stronger than the predecessor gray iron cap
O-ring seal between housing and bearing cap for improved clamp load
Clutch pack steel discs increased 80% in thickness to resist premature tooth wear
Continuous duty rated with a series continuous torque rating of 390 lb-ft
Tech Specs
- Mounting Type: 10-Bolt
- Shift Type: PowerShift (Hydraulic) Hot Shift
- Continuous Operation: Yes
- Series Continuous Torque Rating: 390 lb-ft (529 Nm)
- Transmission Compatibility: Allison, Caterpillar (10-bolt aperture)
- Output Options (series): SAE B Pump Flange, SAE C Pump Flange, ISO 7652 Pump Flange, Driveline
- Lubrication Options (series): Pressure Lube, Wet Spline
- Speed Ratios (series): Nine, including low- and high-speed
- Part Number: 281GCFJW-D5RK
Additional Information
The 281 Series was developed to address the damaging vibrational effects produced by modern engine designs. Its ductile iron bearing cap, thicker clutch pack discs, and improved o-ring housing seal collectively extend service life in demanding continuous-duty applications. Typical markets include fire and rescue, truck cranes, pumper-cleaner trucks, and refuse vehicles. The series also supports an Electronic Overspeed Control (EOC) option to protect driven equipment, and a SmartStart feature to reduce shock load at engagement for select applications. The 281 Series is covered under Chelsea and Parker documentation including the 281/288 Series Parts List (HY25-2281-M1/US) and the 267/281/288/871/878 Series Owner's Manual.Parts Manual: Chelsea 281 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
