GB/T 39741.2-2021 《Plain bearings—Tolerances—Part 2：Tolerances on geometrical characteristics and surface roughness for shafts and thrust collars》 Related products

GB/T 39741.2-2021 Focus on the part 2 of the tolerance of sliding bearings. This standard focuses on the geometric tolerance of the shaft and the thrust shoulder, and strictly defines its shape and positional accuracy to ensure a good fit with the bearing. At the same time, the surface roughness requirements are clearly defined, which is related to the sliding friction performance and service life. This standard provides a key basis for the production and mass inspection of sliding bearings, which helps to improve the accuracy and Reliability of products and ensure the smooth and efficient operation of mechanical systems.