What are the requirements for zirconia ceramic bearings for motors?

What are the requirements for zirconia ceramic bearings for motors?

Zirconium oxide ceramics are also widely used in spare parts. There are also differences in the quality requirements for the use of different parts. What are the requirements for zirconia ceramics when using bearings for motors? The following Jingong Precision will introduce you to the requirements of zirconia ceramic bearings for motors.

Geometric accuracy: The geometric accuracy of zirconia ceramic bearing parts mainly refers to the roundness and cylindricity of the journal, outer cone, Morse taper, etc., and the tolerance should be limited to the dimensional tolerance. For inner and outer circular surfaces with high precision requirements, the allowable deviation shall be marked on the drawing.

Dimensional Accuracy: The yttria ceramic bearing supports the journal. In order to determine the position of the shaft, the dimensional accuracy is usually required (IT5~IT7). The journal size accuracy of the assembly drive is generally low (IT6~IT9).

Mutual positional accuracy: The positional accuracy requirements of zirconia ceramic bearing parts are mainly determined by the position and function of the zirconia ceramic shaft in the machine. Generally, the coaxiality of the journal of the assembly transmission member to the support journal should be ensured, otherwise the transmission accuracy of the transmission member (gear, etc.) will be affected and noise will be generated. Ordinary precision zirconia ceramic shaft, the radial runout of the matching shaft section to the support journal is generally 0.01~0.03mm, and the high precision shaft (such as the main shaft is usually 0.001~0.005mm).

The above is the introduction of the requirements for the zirconia ceramic bearings for motors. The zirconia ceramics have related requirements in terms of geometric accuracy, dimensional accuracy and mutual positional accuracy.

Editor in charge: Liu Changqi