The Chelsea 281GMFJW-B5RK or 281GMFJWB5RK is a Power Take-Off assembly built around nine speed ratios covering both low and high speed ranges. Ductile iron bearing caps deliver 117% greater strength compared to gray iron, while an O-ring sealing configuration reduces vibrational effects and improves clamp load over conventional seal designs. Rotatable cast-iron flanges address interference clearance issues, and driveline outputs include a positive stop to prevent oil seal damage from coupling contact. The optional wet spline lubrication provision extends shaft life by 7 to 10 times. SmartStart technology reduces shock load at start-up, and Electronic Overspeed Control (EOC) protects downstream driven equipment. Cross-references against 280GMFJW-B5RK or 280GMFJWB5RK. Call us to confirm proper fit for your transmission and application.
Features
Nine speed ratios including dedicated low and high speed selections
Ductile iron bearing caps - 117% stronger than gray iron
O-ring sealing configuration reduces vibrational effects and improves clamp load
Rotatable cast-iron flanges reduce interference clearance issues
Positive stop on driveline outputs prevents oil seal damage from coupling contact
Electronic Overspeed Control (EOC) and SmartStart shock-load reduction included
Tech Specs
- Cross Reference: 280GMFJW-B5RK or 280GMFJWB5RK
- Speed Ratios: Nine, including low and high range
- Bearing Cap Material: Ductile iron (117% stronger than gray iron)
- Sealing: O-ring configuration
- Flange Type: Rotatable cast-iron
- Shaft Protection: Wet spline lubrication option (7 to 10 times greater shaft life)
- Torque Rating: Single, continuous duty
- Overspeed Protection: Electronic Overspeed Control (EOC)
- Hose: Included
Additional Information
Parts Manual: Chelsea 281 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
