Outside Diameter

Bearing Designation and mass approx

Borndary Dimensions

Basic Load Rating

Limiting Speed

Without IR

Mass

With IR

Mass

D

d

F 1

Fw

B

C

E

Cr

Dynamic

Cor

Static

As supporting hoop

Grease

Cw

Cow

mm

g

g

mm

N

rpm

16

RSTO 5 TN

8.5

--

--

16

--

7

--

7.8

10

2800

2600

2550

2550

23000

RSTO 5 TN X

8.5

--

--

16

--

7

--

7.8

10

2800

2600

1990

1990

23000

19

RSTO 6 TN

12.5

STO 6 TN

17

19

6

10

10

9.8

13

4700

5450

3750

4500

20000

RSTO 6 TN X

12.5

STO 6 TN X

17

19

6

10

10

9.8

13

4700

5450

3050

4000

20000

24

RSTO 8 TN

21

STO 8 TN

26

24

8

12

10

9.8

15

4800

6000

4200

5500

16000

RSTO 8 TN X

21

STO 8 TN

26

24

8

12

10

9.8

15

4800

6000

3000

5000

16000

30

RSTO 10

42

STO 10

49

30

10

14

12

11.8

20

10200

10500

8400

9200

11000

RSTO 10 X

42

STO 10 X

49

30

10

14

12

11.8

20

10200

10500

8000

8800

11000

32

RSTO 12

49

STO 12

57

32

12

16

12

11.8

22

11300

12300

8900

10100

9000

RSTO 12 X

49

STO 12 X

57

32

12

16

12

11.8

22

11300

12300

8500

9600

9000

35

RSTO 15

50

STO 15

63

35

15

20

12

11.8

26

13200

16000

9100

10700

6500

RSTO 15 X

50

STO 15 X

63

35

15

20

12

11.8

26

13200

16000

8700

9900

6500

40

RSTO 17

88

STO 17

107

40

17

22

16

15.8

29

19800

25300

14300

17700

5500

RSTO 17 X

88

STO 17 X

107

40

17

22

16

15.8

29

19800

25300

12500

15700

5500

47

RSTO 20

130

STO 20

152

47

20

25

16

15.8

32

20800

27800

16200

21500

4700

RSTO 20 X

130

STO 20 X

152

47

20

25

16

15.8

32

20800

27800

15000

19900

4700

52

RSTO 25

150

STO 25

177

52

25

30

16

15.8

37

23000

33400

16500

22900

3600

RSTO 25 X

150

STO 25 X

177

52

25

30

16

15.8

37

23000

33400

14000

20900

3600

62

RSTO 30

255

STO 30

308

62

30

38

20

19.8

46

35200

56700

23300

35000

2500

RSTO 30 X

255

STO 30 X

308

62

30

38

20

19.8

46

33200

56700

21800

33000

2500

72

RSTO 35

375

STO 35

441

72

35

42

20

19.8

50

35800

58800

26000

41000

2200

RSTO 35 X

375

STO 35 X

441

72

35

42

20

19.8

50

35800

58800

24500

38900

2200

80

RSTO 40

420

STO 40

530

80

40

50

20

19.8

58

35200

61800

24000

39000

1700

RSTO 40 X

420

STO 40 X

530

80

40

50

20

19.8

58

35200

61800

22500

36500

1700

85

RSTO 45

453

STO 45

576

85

45

55

20

19.8

63

38900

73900

25500

43000

1500

RSTO 45 X

453

STO 45 X

576

85

45

55

20

19.8

63

38900

73900

24000

41500

1500

90

RSTO 50

481

STO 50

617

90

50

60

20

19.8

68

43300

84800

26000

46500

1300

RSTO 50 X

481

STO 50 X

617

90

50

60

20

19.8

68

43300

84800

22800

44000

1300

Overseas merchant

Model explanation

IKO

INA/SKF

With cage

Crowned Roller Dia.

Without IR

RNAST..R

RSTO

With IR

NAST..R

STO

Cylindrical Roller Dia.

Without IR

RNAST

RSTO..X

With IR

NAST

STO..X