What is the tolerance of deep groove ball bearings?

What is the tolerance of deep groove ball bearings?

Bearing fit Tolerance Tolerance is the sum of the hole and shaft tolerances that make up the fit. It is the amount of variation that allows for gaps or interference. Hole and shaft tolerance band sizes and tolerance band positions make up the tolerances. The tolerance of the hole and shaft fit tolerance indicates the fit accuracy of the hole and the shaft. The size and position of the hole and shaft fit tolerance band indicate the fit and fit of the hole and the shaft. The size of the fit tolerance = the size of the tolerance band; the tolerance tolerance band size and position = fit properties.

Levels and tolerances for tolerances:

Choice of tolerance level

The tolerance level of the shaft or housing bore that mates with the bearing is related to bearing accuracy. For shafts that are matched with P0 precision bearings, the tolerance class is generally IT6, and the bearing housing hole is generally IT7. For applications where high precision of rotation and smoothness of operation (such as motors), the axis should be selected as IT5 and the bearing housing hole should be IT6.

Tolerance zone selection

The tolerance band of the shaft on which the radial and angular contact bearings are mounted is referred to the corresponding tolerance band table. For the most part, when the shaft rotates and the direction of the radial load does not change, that is, when the inner ring of the bearing rotates relative to the load direction, a transition or interference fit should generally be selected. The static axis and the radial load direction are the same, that is, when the inner ring of the bearing is stationary with respect to the load direction, a transition or a small clearance fit can be selected.

Bearing and shaft tolerance standards

1 When the inner diameter tolerance band of the bearing is matched with the shaft tolerance band, the tolerance code of the original transition fit in the general base hole system will become a win-win match, such as k5, k6, m5, m6, n6, etc., but the win is not Large; when the bearing inner diameter tolerance generation is combined with h5, h6, g5, g6, etc., it is not a gap and becomes a win-win match.

2 bearing outer diameter tolerance zone is a special tolerance zone because the tolerance value is different from the general reference axis. In most cases, the outer ring is fixed in the casing hole, and some bearing components require structural adjustment. Too tight, often with H6, H7, J6, J7, Js6, Js7 and so on.

Through the analysis of the tolerances of deep groove ball bearings, we can further understand the deep groove ball bearings. Nowadays, deep groove ball bearings play an important role in low noise motors, motorcycles, general machinery and precision instruments. Accelerating the research of deep groove ball bearings has become the focus of many experts and scholars.
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