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FAFNIR SUPERPRECISION BEARINGS

Ultra-Light 2MM9300WI & 3MM9300WI Series

in.

mm

in.

m

in.

mm

in.

m

in.

mm

9300WI 9301WI 9302WI 9303WI 9304WI

0.3937 0.4724 0.5906 0.6693 0.7874

10 12 15 17 20

1.5 1.5 1.5 1.5 2.0

4 4 4 4 5

0.8661 0.9449 1.1024 1.1811 1.4567

22 24 28 30 37

2.0 2.0 2.0 2.0 2.5

5 5 5 5 6

0.2362 0.2362 0.2756 0.2756 0.3543

6 6 7 7 9

9305WI 9306WI 9307WI 9308WI 9309WI

0.9843 1.1811 1.3780 1.5748 1.7717

25 30 35 40 45

2.0 2.0 2.5 2.5 2.5

5 5 6 6 6

1.6535 1.8504 2.1654 2.4409 2.6772

42 47 55 62 68

2.5 2.5 3.0 3.0 3.0

6 6 7 7 7

0.3543 0.3543 0.3937 0.4724 0.4724

9 9 10 12 12

9310WI 9311WI 9312WI 9313WI 9314WI

1.9685 2.1654 2.3622 2.5591 2.7559

50 55 60 65 70

2.5 3.0 3.0 3.0 3.0

6 7 7 7 7

2.8346 3.1496 3.3465 3.5433 3.9370

72 80 85 90 100

3.0 3.0 3.0 3.0 3.0

7 7 8 8 8

0.4724 0.5118 0.5118 0.5118 0.6299

12 13 13 13 16

Superprecision MM: Superprecision bearings are manufactured to a ABEC-7 (ISO P4) tolerance class.

WI Construction: This design incorporates a low shoulder on the non-thrust side of the outer rings. The maximum complement of balls is separated by a one-piece cage which is piloted against the ground thrust shoulder land of the outer ring.

TO ORDER: Specify bearing number with prefix 2MM for 15contact angle and 3MM for 25contact angle.

Example 2MM9300WI CR

Tolerance

Tolerance

+.0000"

+.0000"

+.0 m

+.0 m

to minus

to minus

  • *

    Refer to page E4 for width tolerance of preloaded bearings.

** ABMA std. 20 (ras max

).

2MM & 3MM

ALL INCH TOLERANCE IN .0001 UNITS

DIMENSIONS – TOLERANCES

Outside Diameter

Width *

Bearing Number

Bore

14

C

d

D

C

16

40

0.012

0.3

12

1 8

31

80

0.012

0.3

13

1 8

31

80

0.012

0.3

13

9 64

31

80

0.012

0.3

14

9 64

47

120

0.012

0.3

14

3 16

Tolerance

Bearing Corner

+.0000"

will Clear **

47

120

0.012

0.3

17

3 16

47

120

0.012

0.3

19

3 16

47

120

0.024

0.6

19

7 32

47

120

0.024

0.6

19

1 4

47

120

0.024

0.6

21

1 4

Maximum

Ball

Fillet Radius

Complement

47

120

0.024

0.6

23

1 4

59

150

0.039

1.0

23

9 32

59

150

0.039

1.0

25

9 32

59

150

0.039

1.0

27

9 32

59

150

0.039

1.0

24

1132

(Dia.) in.

Qty.

mm

+.0 m to minus

in.

  • m

in.

102800

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