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What happens if my clutch gets rusty?
Re-burnishing can save a lot of headaches.
Ogura PTO clutch brakes are used in outdoor power equipment applications and are often exposed to environmental concerns. They get dirty, they get wet, and they might even get a little rusty now and then since steel is a major component. These clutch brakes are used in gas and diesel driven turf care equipment, stump grinders, portable band saws, concrete saws, harvesting equipment, straw blowers, and more.
Both the external part of the clutch and the friction surfaces are made of steel. The outside of the clutch has an e-coating which is exceptionally durable and comes from Ogura's experience in making over three hundred million automotive compressor clutches. It helps prevent rust and keeps the clutch looking fresh. The internal friction surfaces on the other hand are raw steel. This gives the clutch a healthy torque rating with the high coefficient of friction that steel-on-steel provides. One thing that we need to be aware of is that those surfaces can rust in the right conditions. We are aware that machines get washed, left out in the rain, left to sit in the offseason, and some even get exposed to harmful fertilizers and other chemicals.
If the clutch sits long enough for rust to develop on the friction surfaces, it can affect the clutch performance. The rust can lower the coefficient of friction between the two friction surfaces of the clutch. That friction is what provides us with the torque transfer capability and prevents unwanted slipping of the clutch. The good news is that this is usually temporary, and the clutch can be revitalized back to good health if the rust is low to moderate, and the surfaces are not completely rusted together. The repair/renewal process is called burnishing. This is often recommended when breaking in new clutches as well to get full torque carrying capability.
During clutch burnishing, the clutch is subjected to controlled slipping and engagement cycling to wear down high spots or rust on the mating friction surfaces. It maximizes torque transfer capability. In summary, clutch burnishing is important for cleaning up the friction surfaces, preventing unwanted slipping, reducing risk of unwanted downtime, and extending clutch life.
Benefits of using an Ogura PTO clutch brake:
- Long life
- Safety
- Built for outdoor operation
- Many years of proven success
- For use with operator presence controls
- Available with a soft start controller
- Custom designs available based on minimum order quantities
How they work
How they are installed
Ogura Products
