stainless bearings | stainless miniature bearings | precision bearings

Stainless steel thin section bearings for shaft sizes from 10mm to 50mm
See product table below for dimensions and technical drawings
See Products Variants below for chrome steel and flanged options

Stainless steel thin section bearings are used in applications where space is at a premium or weight reduction is required. Stainless steel 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. The smaller sizes in this range are also available with a flanged outer ring. Please see Products Variants below.

Stainless steel thin section bearings, with a stainless steel retainer and a suitable high temperature lubricant, can be used at temperatures of 250°C constant or up to 300°C intermittent. Stainless steel bearings are suitable for use in mildly corrosive environments as the steel is corrosion resistant but it is affected by seawater and stronger acids or alkalis. A stainless steel bearing does not need preservative oil on the exterior surfaces so they can be used without lubrication (dry).

The bearings in the table below can be supplied open, with AISI-304 stainless steel shields, with rubber contact seals and some with low friction non-contact rubber seals. The open bearings are normally oil lubricated. Shielded or sealed bearings are generally pre-lubricated with grease but shielded bearings can also be supplied with instrument oil for low torque applications or completely dry for low speed, low torque applications. If required, these bearings can also be relubricated with a food grade lubricant, a high temperature lubricant, a cleanroom lubricant or according to customer requirements.

The standard cage or retainer for a stainless steel miniature bearing is made from AISI-304 stainless steel. A one-piece crown cage is more common for the very small and the very thin section bearings due to space constraints. Larger sizes have a two piece ribbon cage. Some sizes are available with the “TW” high speed polyamide cage.

Special attention should be given to shaft and housing roundness. The rings of stainless steel thin section bearings are easily distorted. Poor shaft or housing roundness will greatly increase bearing noise. Choosing the correct radial play for an application is even more important with thin section bearings. The internal clearance 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. The load ratings shown are for AISI-440C stainless steel bearings. Load ratings are higher for EZO KS440 bearings. 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
EZO bearings | EZO thin section bearings | Japanese miniature bearings

Thin Section Bearings

Chrome

More Information

thin section bearings | Sapporo Precision | robot bearings

Flanged Thin Section Bearings

Chrome Flanged

More Information

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

Flanged Stainless Steel Thin Section Bearings

Stainless Flanged

More Information

Product Details Stainless

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

S6700

info

4

S6700ZZ

info

4

S6700-2RS

info

19

5

S6800

info

5

S6800ZZ

info

5

S6800-2RS

info

19

 

 

 

6

S6800ZZW6

info

 

 

 

19

 

 

 

7

S6800ZZW7

info

7

S6800-2RSW7

info

22

6

S6900

info

6

S6900ZZ

info

6

S6900-2RS

info

12

18

4

S6701

info

4

S6701ZZ

info

4

S6701-2RS

info

21

5

S6801

info

5

S6801ZZ

info

5

S6801-2RS

info

21

 

 

 

7

S6801ZZW7

info

7

S6801-2RSW7

info

24

6

S6901

info

6

S6901ZZ

info

6

S6901-2RS

info

15

21

4

S6702

info

4

S6702ZZ

info

4

S6702-2RS

info

24

5

S6802

info

5

S6802ZZ

info

5

S6802-2RS

info

24

 

 

 

7

S6802ZZW7

info

7

S6802-2RSW7

info

28

7

S6902

info

7

S6902ZZ

info

7

S6902-2RS

info

17

23

4

S6703

info

4

S6703ZZ

info

4

S6703-2RS

info

26

5

S6803

info

5

S6803ZZ

info

5

S6803-2RS

info

26

 

 

 

7

S6803ZZW7

info

7

S6803-2RSW7

info

30

7

S6903

info

7

S6903ZZ

info

7

S6903-2RS

info

20

25

4

SET2520

info

4

SET2520ZZ

info

 

 

 

27

4

S6704

info

4

S6704ZZ

info

4

S6704-2RS

info

32

7

S6804

info

7

S6804ZZ

info

7

S6804-2RS

info

37

9

S6904

info

9

S6904ZZ

info

9

S6904-2RS

info

25

32

4

S6705

info

 

 

 

4

S6705-2RS

info

37

7

S6805

info

7

S6805ZZ

info

7

S6805-2RS

info

42

9

S6905

info

9

S6905ZZ

info

9

S6905-2RS

info

30

37

4

S6706

info

 

 

 

4

S6706-2RS

info

42

7

S6806

info

7

S6806ZZ

info

7

S6806-2RS

info

47

9

S6906

info

9

S6906ZZ

info

9

S6906-2RS

info

35

44

5

S6707

info

 

 

 

5

S6707-2RS

info

47

7

S6807

info

7

S6807ZZ

info

7

S6807-2RS

info

55

10

S6907

info

10

S6907ZZ

info

10

S6907-2RS

info

40

50

6

S6708

info

 

 

 

6

S6708-2RS

info

52

7

S6808

info

7

S6808ZZ

info

7

S6808-2RS

info

62

12

S6908

info

12

S6908ZZ

info

12

S6908-2RS

info

45

58

7

S6809

info

7

S6809ZZ

info

7

S6809-2RS

info

58

7

S6909

info

7

S6909ZZ

info

7

S6909-2RS

info

50

65

7

S6810

info

7

S6810ZZ

info

7

S6810-2RS

info

72

12

S6910

info

12

S6910ZZ

info

12

S6910-2RS

info

55

72

9

S6811

info

9

S6811ZZ

info

9

S6811-2RS

info

80

13

S6911

info

13

S6911ZZ

info

13

S6911-2RS

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.