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Products - > Needle Roller Bearing -> Machined Needle Roller Bearings

 

 

Machined Typed needle roller bearing is a kind of high capacity bearing with small sectional height. It can operate very flexibly even with the light alloy bearing seat due to its high hard outer ring. There are two series: metric and inch series. Both of which are structured with retainer, full needle and sealing types. Besides, the entity bushed needle roller bearings are divided into two kinds: that with inner ring and without ring. The center shaft is used as rolling body tray for those without inner ring so that its size is even smaller

 
Structure
NK Light series needle roller bearings without inner ring
NKS Heavy series needle roller bearings without inner ring
RNA49 Needle roller bearings without inner ring
RNA69 Double row needle roller bearings without inner ring
RNA48 Needle roller bearings without inner ring
NKI Light series needle roller bearings with inner ring
NKIS Heavy series needle roller bearings with inner ring
NA49 Needle roller bearings with inner ring
NA69  Double row needle roller bearings with inner ring
NA48 Needle roller bearings with inner ring
RNA49... RS Single sealed needle roller bearings without inner ring
RNA49... 2RS Double sealed needle roller bearings without inner ring
NA49... RS Single sealed needle roller bearings with inner ring
NA49... 2RS Double sealed needle roller bearings with inner ring
I R Inner ring series
BR, BRI Inch system series needle roller bearings with inner ring
 
Drawing NK, NKS, RNA49, RNA69
 
 

Shaft Dia

Bearing Designation

Boundary Dimensions

Basic Load Ratings

Limiting

r

 

 

 

 

 

 

Speed

mm

Current

FW

D

C

Oil

 

C

Co

 

mm

N

rpm

7

NK 7/12

7

14

12

3650

3600

34000

8

NK 8/12

8

15

12

3950

4100

32000

10

NA 4900

10

14

22

8500

9200

25000

10

NK 10/12

10

17

12

4750

5500

29000

10

NK 10/16

10

17

16

6200

7800

29000

12

NA 4901

12

16

24

9400

10900

23000

12

NA 6901

12

16

24

16000

21600

23000

12

NK 12/12

12

19

12

6400

7100

27000

12

NK 12/16

12

19

16

9000

11000

27000

14

NK 14/16

14

22

16

10100

11500

25000

14

NK 14/20

14

22

20

12800

15600

25000

15

NA 4902

15

20

28

10600

13600

21000

15

NA 6902

15

20

28

17300

25500

21000

15

NK 15/16

15

23

16

10700

12700

24000

15

NK 15/20

15

23

20

13600

17200

24000

16

NK 16/16

16

24

16

11300

13900

23000

16

NK 16/20

16

24

20

14400

18800

23000

17

NA 4903

17

22

30

11000

14600

20000

17

NA 6903

17

22

30

18600

29000

20000

17

NK 17/16

17

25

16

11900

15000

23000

17

NK 17/20

17

25

20

15100

20400

23000

17

NKI 17/16

17

21

29

13500

18700

21000

17

NKI 17/20

17

21

29

17100

25500

21000

18

NK 18/16

18

26

16

12500

16200

22000

18

NK 18/20

18

26

20

15800

22000

22000

19

NK 19/16

19

27

16

13000

17400

22000

19

NK 19/20

19

27

20

16500

23600

22000

20

NA 4904

20

25

37

21000

25500

17000

20

NA 6904

20

25

37

36000

51000

17000

20

NK20/16

20

28

16

13000

17500

21000

20

NK20/20

20

28

20

16400

23800

21000

20

NKI 20/16

20

24

32

15000

22300

18000

20

NKI 20/20

20

24

32

19000

30500

18000

20

NKIS 20

20

28

42

28500

36500

15000

21

NK21/16

21

29

16

13500

18700

21000

21

NK21/20

21

29

20

17100

25500

21000

22

NK22/16

22

30

16

14000

19900

20000

22

NK22/20

22

30

20

17700

27000

20000

22

NKI 22/16

22

26

34

15300

23600

17000

22

NKI 22/20

22

26

34

19400

32000

17000

22

RNA6903

22

30

23

18600

29000

20000

24

NK24/16

24

32

16

15000

22300

18000

24

NK24/20

24

32

20

19000

30500

18000

25

NA 4905

25

30

42

23600

31500

14000

25

NA 6905

25

30

42

29000

59000

14000

25

NK25/16

25

33

16

14900

22400

18000

25

NK25/20

25

33

20

18800

30500

18000

25

NKI 25/20

25

29

38

21900

34000

15000

25

NKI 25/30

25

29

38

32500

57000

15000

25

NKIS 25

25

32

47

33500

43500

13000

25

RNA4904

25

37

17

21000

25500

17000

26

NK26/16

26

34

16

15300

23600

17000

26

NK26/20

26

34

20

19400

32000

17000

28

NK28/20

28

37

20

22000

34000

16000

28

NK28/30

28

37

30

33000

57000

16000

29

NK29/20

29

38

20

21900

34000

15000

29

NK29/30

29

38

30

32500

57000

15000

30

NA 4906

30

35

47

25000

35500

13000

30

NA 6906

30

35

47

43500

71000

13000

30

NK30/20

30

40

20

22600

36000

15000

30

NK30/30

30

40

30

33500

60000

15000

30

NKI 30/20

30

35

45

24300

41500

13000

30

NKI 30/30

30

35

45

36500

69000

13000

30

NKIS 30

30

37

52

36500

50000

12000

32

NKI 32/20

32

37

47

24900

43500

12000

35

NA 4907

35

42

55

31500

50000

11000

35

NA 6907

35

42

55

48000

86000

11000

35

NK 35/20

35

45

20

24300

41500

13000

35

NK 35/30

35

45

30

36500

69000

13000

35

NKI 35/20

35

40

50

26000

47000

11000

35

NKI 35/30

35

40

50

39000

79000

11000

35

NKIS 35

35

43

58

39000

57000

10000

38

NK 38/20

38

48

20

25500

45000

12000

40

NA 4908

40

48

62

43000

67000

9000

40

NA 6908

40

48

62

66000

116000

9000

40

NK 40/20

40

50

20

26000

47000

11000

40

NK 40/30

40

50

30

39000

79000

11000

40

NKI 40/20

40

45

55

27500

53000

10000

40

NKI 40/30

40

45

55

41000

88000

10000

40

NKIS 40

40

50

65

42500

67000

9000

42

NK 42/20

42

52

20

26500

49000

11000

42

NK 42/30

42

52

30

39500

82000

11000

45

NA 4910

45

52

68

45000

73000

8500

45

NA 6910

45

52

68

69000

127000

8500

45

NK 45/20

45

55

20

27500

53000

10000

45

NK 45/30

45

55

30

41000

88000

10000

45

NKI 45/25

45

50

62

38000

74000

9000

50

NA 4910

50

58

72

47000

80000

8000

50

NA 6910

50

58

72

73000

139000

8000

50

NKI 50/25

50

55

68

40000

82000

8500

50

NKIS 50

50

60

80

63000

98000

7500

55

NKI 55/25

55

60

72

42000

90000

7500

55

NKIS 55

55

65

85

67000

108000

7000

 

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