EZO bearings | EZO thin section bearings | Japanese miniature bearings

Thin section bearings for shaft sizes from 10mm to 80mm
(See product table below for dimensions and technical drawings)

Thin section bearings are used in instrumentation, robotics, aerospace, medical equipment, cameras and optical equipment. They are chosen for an application where space is at a premium or weight reduction is required. Thin section bearings have low rotational torque and high rotational accuracy. Thin section bearings are designed for mainly radial loads. They will support axial loads but, with the 6700 series in particular, these should be limited due to the shallower raceways. Our chrome steel thin section bearings are also available with a flange on the outer ring as shown in Products Variants below.

Chrome steel is the standard material for ball bearings thanks to its high load capacity and low noise properties. Chrome steel thin section bearings, with a steel retainer and a suitable lubricant, can be used at temperatures of 120°C constant or up to 150°C intermittent. Above these temperatures, the load capacity of chrome steel is reduced and the steel undergoes greater dimensional changes.

Chrome steel bearings are not suitable for use in corrosive environments as the steel is not corrosion resistant. Most of our chrome steel thin section bearings can be supplied with metal shields although the larger 6700 series bearings are only available with seals. Many sizes are available with rubber contact seals or low friction non-contact rubber seals. Open bearings are supplied with a light oil lubrication. Shielded or sealed bearings are usually supplied with grease lubrication but shielded bearings can be offered with instrument oil for low speed, low friction applications. Thanks to our in-house relubrication facility, these thin section bearings are also available with customer specified oils, greases or dry lubricants.

A one-piece crown cage is more common for the smallest and the thinnest section bearings due to space constraints. All 6700 series bearings use a crown cage. Many 6800 and 6900 series bearings have a two piece ribbon cage. Some sizes are also available with the high speed TW nylon crown cage.

Attention should be paid to shaft and housing roundness. The inner and outer rings of these bearings are very thin and easily distorted. Poor shaft or housing roundness will greatly increase bearing noise and vibration. Choosing the correct radial play for an application is even more important with thin section bearings. The internal clearance (radial play) of a thin section bearing can be reduced by as much as 80% of the interference fit.

Click on INFO in the rows below to display technical drawings of the bearings with load and speed data. Please note that the maximum loads and speeds are used in theoretical life calculations. It is recommended to use bearings at significantly less than the maximum load and speed ratings to ensure reasonable bearing life.

 

Products Variants
thin section bearings | Sapporo Precision | robot bearings

Flanged Thin Section Bearings

Chrome Flanged

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stainless bearings | stainless miniature bearings | precision bearings

Stainless Steel Thin Section Bearings

Stainless

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Japanese miniature bearings | thin section ezo bearings | thin section bearings uk

Flanged Stainless Steel Thin Section Bearings

Stainless Flanged

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Product Details Chrome

BORE

(mm)

O.D.

(mm)

OPEN BEARING

SHIELDED BEARING

SEALED BEARING

WIDTH

(mm)

SMB REFERENCE

MORE INFO

WIDTH

(mm)

SMB REFERENCE

MORE INFO

WIDTH

(mm)

SMB

REFERENCE

MORE INFO

10

15

3

6700

info

4

6700ZZ

info

4

6700-2RS

info

19

5

6800

info

5

6800ZZ

info

5

6800-2RS

info

19

 

 

 

6

6800ZZW6

info

6

6800-2RSW6

info

19

 

 

 

7

6800ZZW7

info

7

6800-2RSW7

info

22

6

6900

info

6

6900ZZ

info

6

6900-2RS

info

12

18

4

6701

info

4

6701ZZ

info

4

6701-2RS

info

21

5

6801

info

5

6801ZZ

info

5

6801-2RS

info

21

 

 

 

7

6801ZZW7

info

7

6801-2RSW7

info

24

6

6901

info

6

6901ZZ

info

6

6901-2RS

info

13

24

6

6901-TW13

info

 

 

 

 

 

 

14

25

6

6901A-TW14

info

 

 

 

 

 

 

15

20

3.5

ET2015

info

 

 

 

 

 

 

21

3.5

ET2115

info

 

 

 

 

 

 

21

4

6702

info

4

6702ZZ

info

4

6702-2RS

info

24

5

6802

info

5

6802ZZ

info

5

6802-2RS

info

24

 

 

 

7

6802ZZW7

info

7

6802-2RSW7

info

28

7

6902

info

7

6902ZZ

info

7

6902-2RS

info

16

22

4

ET2216

info

 

 

 

 

 

 

17

23

4

6703

info

4

6703ZZ

info

4

6703-2RS

info

26

5

6803

info

5

6803ZZ

info

5

6803-2RS

info

26

 

 

 

7

6803ZZW7

info

7

6803-2RSW7

info

30

7

6903

info

7

6903ZZ

info

7

6903-2RS

info

32

8

6903A

info

8

6903AZZ

info

 

 

 

20

25

4

ET2520

info

4

ET2520ZZ

info

 

 

 

27

4

6704

info

4

6704ZZ

info

4

6704-2RS

info

32

7

6804

info

7

6804ZZ

info

7

6804-2RS

info

32

10

6804W10

info

10

6804ZZW10

info

10

6804-2RSW10

info

37

9

6904

info

9

6904ZZ

info

9

6904-2RS

info

25

32

4

6705

info

4

6705ZZ

info

4

6705-2RS

info

37

7

6805

info

7

6805ZZ

info

7

6805-2RS

info

37

10

6805W10

info

10

6805ZZW10

info

10

6805-2RSW10

info

42

9

6905

info

9

6905ZZ

info

9

6905-2RS

info

30

37

4

6706

info

4

6706ZZ

info

4

6706-2RS

info

42

7

6806

info

7

6806ZZ

info

7

6806-2RS

info

42

10

6806W10

info

10

6806ZZW10

info

10

6806-2RSW10

info

47

9

6906

info

9

6906ZZ

info

9

6906-2RS

info

35

44

5

6707

info

5

6707ZZ

info

5

6707-2RS

info

47

7

6807

info

7

6807ZZ

info

7

6807-2RS

info

55

10

6907

info

10

6907ZZ

info

10

6907-2RS

info

40

50

6

6708

info

 

 

 

6

6708-2RS

info

52

7

6808

info

7

6808ZZ

info

7

6808-2RS

info

62

12

6908

info

12

6908ZZ

info

12

6908-2RS

info

45

55

6

6709

info

 

 

 

6

6709-2RS

info

58

7

6809

info

7

6809ZZ

info

7

6809-2RS

info

68

12

6909

info

12

6909ZZ

info

12

6909-2RS

info

50

62

6

6710

info

 

 

 

6

6710-2RS

info

65

7

6810

info

7

6810ZZ

info

7

6810-2RS

info

72

12

6910

info

12

6910ZZ

info

12

6910-2RS

info

55

72

9

6811

info

9

6811ZZ

info

9

6811-2RS

info

80

13

6911

info

13

6911ZZ

info

13

6911-2RS

info

60

78

10

6812

info

10

6812ZZ

info

10

6812-2RS

info

85

13

6912

info

13

6912ZZ

info

13

6912-2RS

info

65

85

10

6813

info

10

6813ZZ

info

10

6813-2RS

info

90

13

6913

info

13

6913ZZ

info

13

6913-2RS

info

70

90

10

6814

info

10

6814ZZ

info

10

6814-2RS

info

100

16

6914

info

16

6914ZZ

info

16

6914-2RS

info

75

95

10

6815

info

10

6815ZZ

info

10

6815-2RS

info

105

16

6915

info

16

6915ZZ

info

16

6915-2RS

info

80

100

10

6816

info

10

6816ZZ

info

10

6816-2RS

info

110

16

6916

info

16

6916ZZ

info

16

6916-2RS

info

85

110

13

6817

info

13

6817ZZ

info

13

6817-2RS

info

120

18

6917

info

18

6917ZZ

info

18

6917-2RS

info

90

115

13

6818

info

13

6818ZZ

info

13

6818-2RS

info

125

18

6918

info

18

6918ZZ

info

18

6918-2RS

info

Our determination to remain specialised gives us a high level of product knowledge, providing bearing and lubrication solutions to existing or potential customers, whether individuals or large corporations. We don’t just sell bearings, we help to solve your problems. - Chris Johnson, managing director of SMB Bearings.