1,Sleeves radial runout of the outer cone to the inner hole (commonly known as the wall thickness difference KD0) to be high precision, otherwise the rotation axis due to eccentricity centrifugal force, can not smooth operation, large vibration, large noise, wall thickness difference is "0" is the ideal state.The GB standard stipulate that the maximum KD0 Bearing inner diameter below 65 is about 1/2 of the maximum clearance value of the standard group of bearings, which is equivalent to the maximum precision clearance value of class C2. Therefore, the GB standard Bearing sleeves qualified products are not suitable for precision class Bearing with large load.

2, Bearing Sleeves cone Angle difference must be better.The national standard △ D1MP-△ D3MP, different size section tolerance from +0.018-0.09 is the deviation requirements Sleeves cone Angle difference can only be large and not small, that is, the big end must cooperate with contact, small cone end can be a little gap, cone hole is not good, matching the self-allimating roller Bearing will cause a single row of roller force,Unstable operation, large vibration, large noise, easy loosening, short Bearing life, the cone Angle difference of high precision Bearing SLEEVES should also be less than 0.005, to ensure that the contact area is not less than 90%.

3, Bearing sleeves on the surface of the male cone, the inner hole linearity is better, is to form a better tolerance, accuracy of cylindricity is better, this is not provided any national standard single section size within the tolerance range is unqualified, it is caused by male cone surface linear control is lax, especially grinding cutting grinding male cone, the linearity blank itself is bad,The grinding wheel correction is not good, the straightness of the surface is very poor, and the general enterprise has no profilometer inspection, so this project is very problematic in the products of the Bearing SLEEVE industry in China, which seriously affects the supporting accuracy and stability, and also causes poor Bearing performance.

4, SKF BEARING SLEEVES thread locking performance.Matching Bearing is through the locking nut rotary axial movement of the extrusion sleeve Bearing sleeve end face to make the Bearing sleeves and Bearing inner hole in the taper contraction, to achieve the purpose of the Bearing fixed on the axis, so the Bearing nut and tighten the bushing thread with must be better, in line with the national standard requirements of ordinary thread.

The above content is to introduce to friends the knowledge of Bearing Bearing sleeves installation and Bearing sleeves life determination.Sleeves this precision product, the technical conditions must meet the requirements of the national standard is a high precision product, only high precision Sleeves and discharge bushing products to maximize the performance of the Bearing.