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  • Needle roller series

Needle roller series

Detailed description:

A needle bearing is a roller bearing with cylindrical rollers. The rollers are thin and long relative to their diameter. This roller is called a needle roller. Although it has a small section, the bearing still has a high load-bearing capacity. The needle roller bearing is equipped with thin and long rollers (roller diameter D≤5mm, L/D≥2.5, L is the roller length). Therefore, the radial structure is compact. When its inner diameter size and load capacity are the same as other types of bearings, the outer diameter is the smallest, which is especially suitable for bearing results with limited radial installation size. Bearing without an inner ring or needle roller and cage assembly can be selected according to different applications. At this time, the journal surface and shell hole surface matched with the bearing are directly used as the inner and outer rolling surfaces of the bearing. In order to ensure the same load capacity and operating performance as the bearing with the ring, the hardness, machining accuracy, and surface quality of the raceway surface of the shaft or outer shell hole should be similar to the raceway of the bearing ring. This bearing can only bear radial load.

Detailed description

Bearing code

Boundary dimension of bearing

Current code

Used code

d

D

T

MR445624

 

69.898

88.9

38.1

375018

 

37

50

18

3410Z

 

55

74

25

3401Z

 

55

71

25

3409H

 

60

80

28

K202624

 

20

26

24

K46.552.533

 

46.5

52.5

33

K283619

 

28

36

19

K323727

 

32

37

27

K354027

 

35

40

27

K384327

 

38

43

27

K384328.8

 

38

43

28.8

K384331

 

38

43

31

K384425

 

38

44

25

K384426.8

 

38

44

26.8

K404538

 

40

45

38

K424822

 

42

48

22

K455027

 

45

50

27

K455936

 

45

59

36

K475528

 

47

55

28

K485427

 

48

54

27

K525823

 

52

58

23

K535928

 

53

59

28

KK414633

 

41

46

33

KK455031

 

45

50

31

K404626

 

40

46

26

K404629

 

40

46

29

K404630.5

 

40

46

30.5

K434825.5

 

43

48

25.5

K445129

 

44

51

29

K505540

 

550

55

40

K505737

 

50

57

37

K505829

 

50

58

29

K515633

 

51

56

33

K212725

 

21

27

25

K253024

 

25

30

24

K424832

 

42

48

32

K566133

 

56

61

33