Adjustments are based on the specific requirements of operation, bearing measurement accuracy, while maintaining accuracy and stability will depend on the means and measures of preload and locks to ensure. Hydraulic press used, because they use a different accuracy requirements, vary, they work in the manufacturing sector also adopted a different standard. In the production of different products in the same industry, the accuracy is not required. Therefore, in standard working conditions and levels divided into the corresponding numerical precision targets. Produced by the company, by the technical department in the press accuracy of test standards outline and syllabus, as authorities issued a guidance document that provides project, test methods, and the appropriate data parameters, install and check adjustment and acceptance criteria.
1, axle bearing precision: most of the dimensional and running accuracy of rolling bearings in General would have been enough. When more is required, bearing requires a higher degree of accuracy.
Compensation of 2, not neutral: do not appear neutral in the process journal mating surfaces when surface or housing, particularly in conjunction with surface processing is not done in the one card. Misalignment can also arise when using housings. The bending deformation of shafts due to work load, causing the bearing inner and outer rings tilt, also appear wrong.
3, speed: special low friction bearing a single column, so you can reach maximum speed.
4, low noise operation: in small motors, Office equipment and household appliances generally require lower operating noise.
5, cone-shaped holes: bearings with a tapered bore can be mounted directly on tapered shaft neck (for example: high-precision structure of single row and double row cylindrical roller bearings). When you install the bearings out of a given radial internal clearance can be adjusted. Most of the self-aligning ball bearings with a tapered bore, drum-shaped roller bearings and spherical roller bearings are available from an adapter sleeve mounted to a cylindrical neck. The bearings are particularly easy to install and remove.
6, rigidity: stiffness of the bearing is usually needed to have some elastic deformation of bearing force. Machine tool spindle bearings and pinion on the shaft are required to have a high degree of stiffness. Since the rolling element and the Raceway contact is different stiffness than ball bearings roller bearings stiffness and high.
7, bearing radial load: the main radial load bearing for radial spherical plain bearings. These bearings the nominal contact angle A0<=45 0. Feet of rain the same roller bearings ball bearings can accommodate radial loads greater than. Type n and type NU cylindrical roller bearings can only accommodate radial loads, other types of radial bearings can accommodate radial loads, can also be subjected to axial loads.
8, bearing axial load: main bearing for thrust bearings subjected to axial loads, its nominal contact A0>450 the corner. Thrust angular contact ball bearings and thrust bearings can afford one or two depending on the structure of the axial force. When subjected to special optimization of high thrust force cylindrical roller bearings and spherical roller thrust bearings.
9, bearing their own length compensation: supporting a shaft and bearings are normally fixed bearing and the structure of the free bearing combination. Length of the free bearing compensating axial error and thermal expansion.
10, separable bearings (precision): this is a ring of bearings can be mounted separately, when both rings are a tight fit, its advantages are highlighted. Separable bearings consist of four point contact ball bearing, a half inner ring of double row angular contact ball bearings, cylindrical roller bearings, tapered roller bearings, thrust ball bearings, cylindrical roller thrust bearings and spherical roller thrust bearings.


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