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Bearing clearance

Bearing clearance

(Summary description)The internal clearance (also known as clearance) during rolling bearing operation has a great influence on bearing performance such as fatigue life, vibration, noise, and temperature rise. Therefore, selecting the internal clearance of the bearing is an important research project for the bearing that determines the structural size. The so-called clearance is the amount of clearance between the inner ring, outer ring, and rolling elements of the bearing. That is, one of the inner ring or the outer ring is fixed and the other ferrule is moved up and down or left and right. The amount of movement in the radial direction and the axial direction, wind is also called radial clearance and axial clearance. It is stipulated in the corresponding international standards. Ceramic bearings and stainless steel bearings produced by the company

Bearing clearance

(Summary description)The internal clearance (also known as clearance) during rolling bearing operation has a great influence on bearing performance such as fatigue life, vibration, noise, and temperature rise. Therefore, selecting the internal clearance of the bearing is an important research project for the bearing that determines the structural size. The so-called clearance is the amount of clearance between the inner ring, outer ring, and rolling elements of the bearing. That is, one of the inner ring or the outer ring is fixed and the other ferrule is moved up and down or left and right. The amount of movement in the radial direction and the axial direction, wind is also called radial clearance and axial clearance. It is stipulated in the corresponding international standards. Ceramic bearings and stainless steel bearings produced by the company

Information

The internal clearance (also known as clearance) during rolling bearing operation has a great influence on bearing performance such as fatigue life, vibration, noise, and temperature rise. Therefore, selecting the internal clearance of the bearing is an important research project for the bearing that determines the structural size. The so-called clearance is the amount of clearance between the inner ring, outer ring, and rolling elements of the bearing. That is, the amount of movement by which one of the inner ring or the outer ring is fixed, and the other ferrule moves up and down or left and right. The amount of movement in the radial direction and the axial direction is called radial clearance and axial clearance respectively. It is stipulated in the corresponding international standards.

Radial clearance of ceramic bearings and stainless steel bearings

Table 1 Deep groove ball bearings (for ceramic bearings and stainless steel bearings) (μm)

Nominal inner diameter

Group 2

Group 0

Group 3

Group 4

Group 5
d（mm) （C2） （CO) (C3) (C4) (C5)
Exceed To min max min max min max min max min max
over to
2.5 6 1 8 5 15 10 20 15 25 21 33
6 10 2 9 6 17 12 25 19 33 27 42
10 14 2 10 6 19 13 26 21 35 30 48
14 18 3 12 8 21 15 28 23 37 32 50
18 24 4 14 10 23 17 30 25 39 34 52
24 30 5 16 11 24 19 35 29 46 40 58
30 40 6 18 13 29 23 40 34 53 46 66
40 50 6 19 14 31 25 44 37 57 50 71
50 65 7 21 16 36 30 50 45 69 62 88
65 80 8 24 18 40 35 60 54 83 76 108
80 100 9 27 22 48 42 70 64 96 89 124
100 120 10 31 25 56 50 83 75 114 105 145
120 140 10 38 30 68 60 100 90 135 125 175
140 160 15 44 35 80 70 120 110 161 150 210

Table 2 Self-aligning ball bearings (suitable for ceramic bearings and stainless steel bearings)

Nominal inner diamete

Group 2

Group 0

Group 3

Group 4

Group 5
d（mm) （C2） （CO) (C3) (C4) (C5)
Exceed To min max min max min max min max min max
over to
2.5 6 0 7 2 13 8 23 14 29 20 37
6 10 0 7 2 13 8 23 18 33 25 45
10 18 0 9 3 18 11 25        
18 24 0 10 5 20 13 28 20 31 28 48
24 30 1 11 5 20 13 28 23 41 30 53
30 40 1 11 6 20 15 33 28 46 40 64
40 50 1 11 6 23 18 36 30 51 45 73
50 65 1 15 8 28 23 43 38 61 55 90
65 80 1 15 10 30 25 51 46 71 65 105
80 100 1 18 12 36 30 58 53 84 75 120
100 120 2 20 15 41 36 66 61 97 90 140
120 140 2 23 18 48 41 81 71 114 105 160

Table 3 Deep groove ball bearings (for plastic bearings)

Inner diameter size

Axial clearance (μm)

Inner diameter size d (mm)

Axial clearance (μm)

（mm)

Bore diameter

min

max

min

max

10

130

180

10

180

250

10-25

180

220

10-25

190

260

25-40

200

270

25-40

200

270

40-65

300

400

40-65

300

400

The above standards are suitable for materials: POM, PP, PVDF.

The above standards are suitable for materials: PE, UPE, PTFE.

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Next: Chemical characteristics of commonly used engineering plastics for bearings
Previous: Bearing material options
Next: Chemical characteristics of commonly used engineering plastics for bearings

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