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Metric and Inch Miniature Thrust Bearings

miniature thrust bearings

Miniature thrust bearings must be kept in matched sets.

The bore (d dimensions) of one washer in the set will conform to the data in the above charts. The bore (d dimension) of the mating washer will be roughly .007" larger, because it is a clearance hole for the shaft.

Small thrust ball bearings (or axial bearings) are available with bore sizes as small as 2mm. Mini ball thrust bearings are normally supplied in SAE52100 chrome steel with brass retainers but can also be manufactured in stainless steel (possibly subject to minimum requirements). Miniature thrust bearings can withstand axial or thrust loads only. There are separate types of miniature thrust axial bearings with either flat races or washers incorporating a groove or raceway for heavier loads. The grooved type have one washer with a slightly larger bore to allow it to locate in the housing while the other washer has a smaller OD to locate on the shaft.

This is not a common bearing. So if you can not find the size you need, pleas don't worry. You can contact us and we can provide customized service based your demands. There are many different designs of miniature thrust bearings which involve different materials, small sealed thrust bearing, with groove or without grooves as well as imperial size. 


Metric Size


Type

d

D

d1

D1

H
Load RatingCr(N)
Load Rating Cor(N)
Max. Speed
rpm
Grease
Oil
3
8
3.2
7.8
3.5
600
480
11000
15000
4
9
4.2
8.8
4
800
520
8000
12000
4
10
4.2
9.8
4
658
580
6000
10000
5
10
5.2
9.8
4
950
830
5100
8100
5
11
5.2
10.8
4.5
988
880
5000
8000
5
12
5.2
11.8
4
988
880
5000
8000
6
12
6.2
11.8
4.5
1600
1255
5000
7000
6
13
6.2
12.8
5
1600
1255
5000
7000
6
14
6.25
13.8
5
1800
1588
4000
7000
7
13
7.2
16.8
4.5
1422
1255
4000
7000
7
15
7.2
14.8
5
2200
2000
3600
7100
7
17
7.2
16.8
6
2600
2256
3500
7000
8
16
8.2
15.8
5
2500
3000
4000
8000
8
19
8.2
18.8
7
3452
3000
3000
5000
9
20
9.2
19.8
7
3356
2999
2500
4500
10
18
10.2
17.8
5.5
2230
2721
2500
4500


Type
d
D
d1
D1
H
Load RatingCr(N)
Load Rating Cor(N)
2
6
2
6
3
117
83
2.5
7
2.5
7
3.5
156
117
3
8
3.2
7.8
3.5
600
480
4
9
4.2
8.8
4
800
520
4
10
4.2
9.8
4
658
580
5
11
5.2
10.8
4.5
988
880
6
12
6.2
11.8
4.5
1600
1255
7
15
7.2
14.8
5
2200
2000
8
16
8.2
15.8
5
2500
3000
9
17
9.2
16.8
5
578
627
10
18
10.2
17.8
5.5
2230
2721

Inch Size


A
B
E


part Number
Bore Size (Nom.)
Outside Dia.(Nom.)
Total Height
Load Rating
Load Rating

Inch
Inch
Inch


0.125
0.438
0.190 / 0.196
89
48
0.25
0.562
0.190 / 0.196
83
44
0.312
0.625
0.190 / 0.196
134
71
0.312
0.625
0.190 / 0.196
94
50
0.375
0.812
0.245 / 0.253
149
79
0.562
1
0.245 / 0.253
156
83
0.625
1.125
0.336 / 0.348
243
129
0.688
1.188
0.336 / 0.348
283
150
0.812
1.312
0.336 / 0.348
253
135
 A 7Z 7-087ST  0.875  1.375  0.336 / 0.348  281  150
 A 7Z 7-093  0.938  1.562  0.427 / 0.447  446  238
 A 7Z 7-100  1  1.625  0.427 / 0.447  496 264
 A 7Z 7-125ST  1.25  1.875  0.427 / 0.447  486  259
 A 7Z 7-018ST  0.188  0.5  0.190 / 0.196  73  39
 A 7Z 7-075ST  0.75  1.25  0.336 / 0.348  225  120
 A 7Z 7-087  0.875  1.375  0.336 / 0.348  402  214
 A 7Z 7-012ST  0.125  0.438  0.190 / 0.196  63  34
 A 7Z 7-018  0.188  0.5  0.190 / 0.196  104  55
 A 7Z 7-025  0.25  0.562  0.190 / 0.196  119  63
 A 7Z 7-068ST  0.688  1.188  0.336 / 0.348  198  105
 A 7Z 7-075  0.75  1.25  0.336 / 0.348  322  172
 A 7Z 7-081  0.812  1.312 0.336 / 0.348   362  193
 A 7Z 7-062ST  0.625  1.125  0.336 / 0.348  170  90
 A 7Z 7-050ST  0.5  0.938  0.245 / 0.253  139  74
 A 7Z 7-056  0.562  1  0.245 / 0.253  223  119
 A 7Z 7-112ST  1.125  1.75  0.427 / 0.447  417  222
 A 7Z 7-043ST  0.438  0.875  0.245 / 0.253  122  64
 A 7Z 7-100ST  1  1.625  0.427 / 0.447  347  185
 A 7Z 7-125  1.25  1.875  0.427 / 0.447  694  370
 A 7Z 7-037ST  0.375  0.812  0.245 / 0.253  104  55
 A 7Z 7-043  0.438  0.875  0.245 / 0.253  174  92
 A 7Z 7-050  0.5  0.938  0.245 / 0.253  198  106
 A 7Z 7-093ST  0.938  1.562  0.427 / 0.447  312  167
 A 7Z 7-112  1.125  1.75  0.427 / 0.447  595  317


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