Based on the ISO Classification Standard, the precision bearing is devided into five levels: P0,P6,P5,P4,P2, with the level from general precision to premium precision, and P0 is in general precision, and the other 4 levels are in precision classification. Based on different classification standard and different bearings, the classifications are different, but with the same signification. On the usablity of the precision bearing, it requires high precision range, high-speed rotation, friction and low friction change.
Differences between the precision bearing and the general bearing:
1. Required values for sizes are different, for the products in high precision levels, their size deviation values (inner diameter, external diameter, ellipse, etc.)are less than that of products in low classifications.
2. The required values for rotating precision are different. The higher precision level, more stricter value is required of the bearing products.
3. The required values for macroshap and surface quality are different, the higher precision level it is, the stricter value for the rotating precision required.
4. For bearing products in special high precision levels, their materials are much more beneficial than that of general precision bearing products.
没有评论:
发表评论