The difference between high-temperature bearings and ordinary bearings

In addition to differences in performance and materials, their model expressions are also different.

1. The parts of the bearing are made of bearing steel and undergo high-temperature tempering treatment. Their post code is in accordance with the provisions of JB/T2974 (parts that undergo high-temperature tempering treatment can reach a working temperature of 150 ° C, with the code/SO; sh07 parts that undergo high-temperature tempering treatment can reach a working temperature of 200 ° C, with the code/S1; parts that undergo high-temperature tempering treatment can reach a working temperature of 250 ° C, with the code/S2; parts that undergo high-temperature tempering treatment can reach a working temperature of 300 ° C, with the code/S3; parts that undergo high-temperature tempering treatment can reach a working temperature of 350 ° C, with the code/S4).

2. The parts of the bearing are made of heat-resistant steel, and their post code is in accordance with the provisions of JB/T2974 (material Cr4Mo4V, its post code is/HN; material Cr14Mo4, its post code is HN1; The material is Cr15Mo4V, and its post code is/HN2; The material is W18Cr4V, with the suffix code/HN3.