Density of steel ball bearing of GCr15 bearing steel is a kind of high carbon chromium bearing steel with less alloy content, good performance and wide application. After quenching and tempering, it has high and uniform hardness, good wear resistance and high contact fatigue performance. The cold working of the steel is medium in plasticity, the cutting performance is general, the welding performance is poor, the sensitivity to white spots is large, and the temper brittleness is obtained. Density of steel ball bearing of GCr15 is 7.81 g/cm3
Density of steel ball bearing of bearing accuracy and grade:
density of steel ball bearing is divided into (main) dimensional accuracy and rotation accuracy. The accuracy level has been standardized and is divided into six levels: 0, 6X, 6, 5, 4, and 6. The accuracy is increased from the 0th level in order, and is sufficient for the general purpose 0 level, but when used in the conditions or occasions shown in Table 1, an accuracy of 5 steps or higher is required.Although the above density of steel ball bearing of accuracy level is based on the ISO standard, density of steel ball bearing of accuracy level name is different in national standards.
Density of steel ball bearing of dimensional accuracy (item related to shaft and housing installation)
1. Allowable deviation of inner diameter, outer diameter, width and assembly width
2. Allowable deviation of the diameter of the compound circle and the diameter of the outer complex circle in the roller group
3, the allowable limit value of the chamfer size
4, the allowable variation of the width
Density of steel ball bearing of rotation accuracy (item related to the rotation of the body)
1. Allowable radial runout and axial runout of the inner and outer rings
2, the inner ring allows lateral runout
3. Allowable variation of the inclination of the outer diameter surface
4. Allowable variation of the thickness of the thrust bearing raceway
5. Allowable deviation and allowable variation of tapered bore.
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