The Chelsea 281GMFJP-B5RK or 281GMFJPB5RK is a Power Take-Off assembly engineered for continuous-duty commercial truck applications. It offers nine speed ratios covering both low and high ranges, with a single continuous-duty torque rating. Ductile iron bearing caps deliver 117% greater strength than gray iron, while an O-ring sealing configuration reduces vibration effects and improves clamp load. Rotatable cast-iron flanges reduce clearance interference issues, and positive-stop driveline outputs protect oil seals from coupling damage. The Wet Spline Lubrication option extends shaft service life by 7 to 10 times. SmartStart reduces shock load at start-up, and the Electronic Overspeed Control (EOC) safeguards driven equipment. Cross-references include 280GMFJP-B5RK and 3252PME633SA. Call us to confirm proper fit for your application.
Features
Nine speed ratios including low and high speed ranges
Ductile iron bearing caps rated 117% stronger than gray iron
O-ring sealing configuration reduces vibration effects and improves clamp load
Rotatable cast-iron flanges reduce driveline clearance interference
SmartStart reduces shock load at start-up
Electronic Overspeed Control (EOC) protects driven equipment from overspeed damage
Tech Specs
- Part Number: 281GMFJP-B5RK or 281GMFJPB5RK
- Brand: Chelsea
- Speed Ratios: Nine ratios including low and high speeds
- Bearing Cap Material: Ductile iron (117% stronger than gray iron)
- Sealing: O-ring configuration
- Flange Type: Rotatable cast-iron
- Lubrication Option: Wet Spline (provides 7 to 10 times greater shaft life)
- Overspeed Protection: Electronic Overspeed Control (EOC)
- Cross References: 280GMFJP-B5RK, 280GMFJPB5RK, 1450-280GMFJPB5RK, 3252PME633SA, CHE-280GMFJP-B5RK
Additional Information
Parts Manual: Chelsea 281 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
