Ball bearings for dental motors

A ball bearing for engines must withstand the most extreme conditions and is at the same time one of the crucial components for the performance of the engine.

Speeds of up to 40,000 rpm, vibrations, attacks by heat or various cleaning substances, as well as penetrating dirt are major challenges for ball bearings.

In order to meet these high demands, we only use ball bearings that impress with their quality and durability.

If the motor becomes loud, sings or runs rough, it is possible that the bearings are defective. This is also indicated by a high current consumption and the motor is usually very loud. The bearings can be replaced on most armatures.

What is the difference between angular contact ball bearings and deep groove ball bearings?

• Angular contact ball bearings enable higher speeds with reduced friction. These ball bearings have raceways in the inner and outer rings that are offset from one another in the direction of the bearing axis. They are particularly suitable for bearings that have to accommodate combined loads, such as simultaneous radial loads and axial loads.

• Deep groove ball bearings are the most commonly used ball bearings. They are particularly versatile. They operate with little friction, are known for their quiet running and low vibration levels. This means that these ball bearings are also suitable for high speeds. Deep groove ball bearings are primarily designed to absorb radial forces.

What are ball cages and what is their function?

The ball cage has the task of keeping the balls in the ball bearing separated from each other around the pitch circle of the bearing.
In order to find the optimal solution for any ball bearing, there are many different designs of ball cages for quality bearings, which differ both in their construction and in the material.

What is the difference between ceramic ball bearings and steel ball bearings?

For ceramics, aqueous media act like lubricants. The friction values ​​can usually be stabilized at a low level. Wear is lower, so that durability is generally extended. They are often used in the dental field because they do not rust and are also light.

In terms of load capacity and achievable speed, ceramic ball bearings have disadvantages compared to steel bearings.

Metals have a good combination of hardness and elasticity. Ceramics are very hard, but have less elasticity. In addition, the heat dissipation of ceramics is worse than that of metal. This is why ceramic ball bearings are also limited in terms of the maximum rotation speed.

Dental motors usually have steel ball bearings.

What causes dental ball bearings to break?

Ball bearings are wearing parts and wear out over time.

Sometimes damage from falls can also cause the bearing to break.

When is it worth replacing only the bearings and not the entire anchor?

As long as the copper collector is not too worn and has sufficient support, it can be easily regenerated and the bearings replaced.

A micromotor usually has speeds of up to 60 - 40,000 rpm, an air motor up to 20,000 rpm.