KOYO BEARING

NA4909 KOYO NEEDLE ROLLER BEARINGS

KOYO drawn cup needle roller bearings.

METRIC SERIES
When a rolling bearing is needed for a compact and economic design and where it is not practical to harden and grind the housing bore, or where the housing materials are of low rigidity such as cast iron, aluminum or even plastics – drawn cup needle roller bearings should be considered.

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KOYO NEEDLE ROLLER BEARINGS.

Various part numbers in stock, welcome inquiry. Fast shipment within 2-3 working days.

Shaft

Dia.

d D B Fw  

rs min.

s(1) Bearing    Designation Load Ratings Fatigue

Load Limit

Cu

Speed Ratings Approx.

Wt.

Dynamic Static
C C0 Grease Oil
mm

in

mm

in

mm

in

mm

in

mm

in

mm

in

mm

in

  kN

lbf

kN min-1 kg

lbs

45

1.7717

45

1.7717

62

2.4409

35

1.378

50

1.9685

0.6

0.024

3

0.118

NKJ45/35A 55

12400

117

26300

18.2 5500 8500 0.345

0.761

  45

1.7717

68

2.6772

22

0.866

52

2.0472

0.6

0.024

2

0.079

NA4909 46.8

10500

74.8

16800

12.0 5400 8400 0.291

0.642

  45

1.7717

68

2.6772

40

1.575

52

2.0472

0.6

0.024

1.5

0.059

NA6909A 74.7

16800

137

30800

21.7 5400 8400 0.55

1.232

  45

1.7717

72

2.8346

22

0.866

55

2.1654

1

0.039

1

0.039

NKJS45A 47.9

10800

78.4

17600

12.6 5100 7900 0.36

0.794

50

1.9685

50

1.9685

68

2.6772

25

0.984

55

2.1654

0.6

0.024

3

0.118

NKJ50/25A 46.1

10400

87.3

19600

13.9 5000 7800 0.288

0.635

  50

1.9685

68

2.6772

35

1.378

55

2.1654

0.6

0.024

3

0.118

NKJ50/35A 62.3

14000

129

29000

20.0 5000 7800 0.406

0.895

  50

1.9685

72

2.8346

22

0.866

58

2.2835

0.6

0.024

2

0.079

NA4910 48.9

11000

82

18400

13.2 4800 7400 0.296

0.653

  50

1.9685

72

2.8346

40

1.575

58

2.2835

0.6

0.024

1.5

0.059

NA6910A 75.7

17000

144

32400

22.8 4800 7400 0.577

1.272

  50

1.9685

80

3.1496

28

1.102

60

2.3622

1.1

0.043

1.5

0.059

NKJS50A 66.9

15000

103

23200

16.5 4800 7300 0.523

1.153

55

2.1654

55

2.1654

72

2.8346

25

0.984

60

2.3622

0.6

0.024

3

0.118

NKJ55/25A 44.3

9960

94

21100

14.9 4600 7000 0.29

0.639

  55

2.1654

72

2.8346

35

1.378

60

2.3622

0.6

0.024

3

0.118

NKJ55/35A 59.9

13500

139

31200

21.5 4600 7000 0.41

0.904

  55

2.1654

80

3.1496

25

0.984

63

2.4803

1

0.039

2.5

0.098

NA4911 62

13900

107

24100

17.1 4500 6900 0.426

0.939

  55

2.1654

80

3.1496

45

1.772

63

2.4803

1

0.039

2.5

0.098

NA6911A 94.2

21200

172

38700

27.8 4500 6900 0.8

1.764

  55

2.1654

85

3.3465

28

1.102

65

2.5591

1.1

0.043

1.5

0.059

NKJS55A 71

16000

114

25600

18.3 4400 6700 0.569

1.254

60

2.3622

60

2.3622

82

3.2283

25

0.984

68

2.6772

0.6

0.024

2

0.079

NKJ60/25A 49

11000

101

22700

16.1 4000 6200 0.44

0.97

  60

2.3622

82

3.2283

35

1.378

68

2.6772

0.6

0.024

2.5

0.098

NKJ60/35A 66.2

14900

149

33500

23.2 4000 6200 0.52

1.146

  60

2.3622

85

3.3465

25

0.984

68

2.6772

1

0.039

1.5

0.059

NA4912 64.8

14600

116

26100

18.6 4100 6300 0.457

1.008

  60

2.3622

85

3.3465

45

1.772

68

2.6772

1

0.039

2

0.079

NA6912A 99.3

22300

189

42500

30.5 4100 6400 0.829

1.828

  60

2.3622

90

3.5433

28

1.102

70

2.7559

1.1

0.043

1.5

0.059

NKJS60A 72.6

16300

120

27000

19.3 4000 6200 0.607

1.338

65

2.5591

65

2.5591

90

3.5433

25

0.984

72

2.8346

1

0.039

1.5

0.059

NA4913 66

14800

121

27200

19.4 3900 5900 0.489

1.078

WHCD Bearing Co.,Ltd is professional bearing supplier, engaged in bearing business with more than eighteen years, export to worldwide countries, as America, European, Middle-East, Southeast Asia …etc. with plenty long-term cooperation customers. WHCD Bearing company will provide professional and prompt solution for customers.Original Quality and Warranted, and Bearing experts team support customer service. Various bearing types for customer choose:  
Bearing Types:
Self-aligning ball bearing
Cylindrical roller bearing
Spherical roller bearing
Tapered roller bearing
Angular contact ball
Needle roller
Deep groove ball bearing
Axial deep groove ball
Pillow block bearing and units
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