What are the common wear states of bearings?

Bearing failure is a common problem in the process of bearing operation, in which the form of wear is a type of bearing failure, and wear also has great damage to the bearing, such as a few pieces of repair will directly lead to bearing damage and damage. Bearing manufacturers to understand the bearing, share several common forms of bearing wear, I hope you encounter wear in the process of using the bearing, you can according to the specific wear form for good repair.

1. Oxidation wear. The tiny peaks and valleys on the surface of the relative motion of the bearing are combined with the oxidation in the air to form a brittle oxide which is not firmly bonded with the base metal. The oxide is easy to fall off in the friction, and the wear is called oxidation wear.

2. Friction produces heat and wear. When the bearing works under the condition of high speed, heavy load and poor lubrication, high temperature, hardness and wear resistance of the contact point decrease, even adhesion and tearing occur at the peak and valley of the surface due to friction. This kind of wear is called friction heat generation wear.

3. Hard wear. If the bearings are in relative motion. The movement surface of the bearing is unevenly organized, and there are hard particles, or impurities such as sand, debris and chips fall into the movement surface of the bearing. In the relative movement of the bearing, the hard particles or impurities will scratch the surface of the bearing and even form grooves. This kind of wear is called hard particle wear.

4. Pitting wear. For example, the rolling contact surface of gear bearing is subjected to great contact pressure periodically in the relative process, and the fatigue phenomenon occurs on the metal surface for a long time, resulting in micro cracks and denudation on the bearing surface. This kind of wear is called pitting wear.