When we useElectric spindleSometimes we encounter cracks in the bearings. So what caused it?

1. Damage and cracks: Improper installation and disassembly of bearings, lack of necessary tools and auxiliary tools during installation, direct impact of hammers or other tools on bearings, excessive force or uneven tapping force can cause cracks or fractures on the edge of the bearing end face block.

2. Fatigue cracks: Poor contact between the bearing seat and the outer cylindrical surface of the bearing when installed on the journal and bearing inner hole, uneven contact between the components of the raceway bearing, causing the bearing ring or rolling element to break.

3. Hard and brittle cracks; This type of crack is caused by poor bearing quality or internal material defects and heat treatment hardness during the manufacturing process.

4. Vibration cracks: Cracks caused by large impact loads on bearings during use. The rings and rolling elements of rolling bearings are usually made of high carbon chromium bearing steel. The collar and rolling elements have high hardness. Although they can withstand large impact loads, excessive impact loads can cause severe vibrations during bearing operation. Causing damage and bearing cracks.

At present, electric spindles have played a huge role in industries such as CNC drilling and milling equipment, precision engraving, engraving and milling, woodworking machinery, etc. Although electric spindles can fully meet the needs of these industries at present, if their performance is not improved, they will be eliminated after a period of time. Therefore, the industry currently attaches great importance to improving the performance of equipment and is conducting in-depth research on multiple key technologies, including high-performance built-in motor design technology; Motor manufacturing process technology; Loss and temperature rise suppression technology for electric spindles; Research on weak magnetic speed regulation technology for motors; High power high-speed closed-loop vector control technology; High precision C-axis positioning control technology; High speed bearings and their lubrication, heat dissipation, and cooling technologies; Assembly process research; High speed precision shaft rotor dynamics analysis technology; Online testing technology and dynamic balancing technology; Pre tightening force control technology for bearings.

Identifying the cause can better avoid this phenomenon and find timely solutions. Extending the service life of the electric spindle is very helpful. I hope everyone can correct the erroneous behavior in daily operations and ensure better application of the electric spindle according to the above methods.