MINIATURE DEEP GROOVE RADIAL BALL BEARINGS

Single Row Conrad. Open & Shielded Ball Bearings

R SERIES
INCH SIZES


Miniature Ball Bearing Inch Sizes

Bore Diameter

ID

Outer Diameter

OD

Radius

r (min.)

Width

W

OPEN

Width

W

ZZ/2RS

Bearing Number

Basic load Ratings

(kgf)

Limiting speeds

x1000RPM

Mounting Dim.

(INCH)

Ball Complement
(INCH)
Dynamic Static
mm inch

mm

inch

mm

inch

mm

inch

mm

inch

Open

2 shields

Cr

Cor

Grease

Oil

da

Da

Qty

Dim

2.38 0.0937

4.762

0.1875

0.1

0.0039

2.38

0.0937

2.38

0.0937 R133 R133ZZ

17

5.5

80

95

-

0.1654

10

0.024
3.175 0.125

6.35

0.25

0.1

0.0039

2.38

0.0937

2.779

0.1094 R144 R144ZZ

29

10

67

80

0.154

0.226

7

0.039
   

7.938

0.3125

0.1

0.0039

2.78

0.1094

3.571

0.1406 R2-5 R2-5ZZ

57

18

60

67

0.172

0.279

6

0.0625
    7.938 0.3125 0.1 0.0039 2.78 0.1094 2.78 0.1094 R154 R154ZZ 57 18 60 67 0.172 0.279 6 0.0625
    9.525 0.375 0.15 0.0059 2.779 0.1094 3.571 0.1406 R2-6 R2-6ZZ 65 24 54 62 0.181 0.3228 7 0.0625
    9.525 0.375 0.3 0.0018 3.967 0.1562 3.967 0.1562 R2 R2ZZ 64 22 56 67 0.19 0.3142 7 0.0625
    12.70 0.50 0.3 0.0018 4.366 0.1719 4.366 0.1719 R2A R2AZZ 65 23 53 63 0.2047 0.2953 7 0.0625
    19.05 0.75 0.4 0.0157 3.175 0.125 - - R1204 - 68 25 51 65 0.4235 0.5625 11 0.0625
3.967 0.1562

7.938

0.3125

0.1

0.0039

2.779

0.1094

3.175

0.125 R155 R155ZZ

37

15

53

64

0.2177

0.2756

10

0.0394
4.7642 0.1875

7.938

0.3125

0.1

0.0039

2.779

0.1094

3.175

0.125 R156 R156ZZ

37

15

53

64

0.2177

0.2756

10

0.0394
   

9.525

0.375

0.1

0.0039

3.175

0.125

3.175

0.125 R166 R166ZZ

72

28

50

60

0.2343

0.3228

8

0.0625
   

12.7

0.50

0.3

0.0018

3.967

0.1562

4.978

0.1906 R3 R3ZZ

133

50

43

53

0.2559

0.4390

7

0.0937
   

15.875

0.625

0.3

0.0018

4.978

0.1906

4.978

0.1906 R3A R3AZZ

151

63

38

45

0.3307

0.5335

8

0.0937
6.35 0.25

9.525

0.375

0.1

0.0039

3.175

0.125

3.175

0.125 R168 R168ZZ

38

18

48

56

0.2787

0.3369

11

0.0394
   

12.7

0.50

0.15

0.0059

3.175

0.125

4.762

0.1875 R188 R188ZZ

110

45

40

50

0.2920

0.443

8

0.0787
    15.87 0.625 0.3 0.0018 4.978 0.1960 4.978 0.1960 R4 R4ZZ 151 63 38 45 0.3681 0.3307 8 0.0937
    19.05 0.75 0.4 0.0157 5.558 0.2188 7.142 0.2812 R4A R4AZZ 238 91 36 43 0.3346 0.6496 6 0.1378
7.94 0.3125 22.23 0.875 0.15 0.0059 3.967 0.1562 3.967 0.1562 R1810 R1810ZZ 55 28 40 48 0.3681 0.4390 12 0.0472
9.525 0.375 22.23 0.875 0.4 0.0157 5.558 0.2188 7.142 0.2812 R6 R6ZZ 340 145 32 38 0.4685 0.7835 7 0.1563
Stainless Steel AISI 440C is available in stock, to find or search item add "S" prefix to the part number, Specs are same as in this catalog.
Example: SR168-ZZ, SR3-2RS, SR144

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