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NA4905 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
5

0.1969

 5

0.1969

 15

0.5906

 12

0.472

 8

0.315

 0.3

0.012

 1.5

0.059

 NKJ5/12 4.57

1030

 4.89

1100

 0.740 26000 41000 0.014

0.031
5

0.1969

 15

0.5906

 16

0.63

 8

0.315

 0.3

0.012

 1.5

0.059

 NKJ5/16 5.22

1170

 5.78

1300

 0.880 26000 41000 0.017

0.037
6

0.2362

 6

0.2362

 16

0.6299

 12

0.472

 9

0.3543

 0.3

0.012

 1.5

0.059

 NKJ6/12 4.27

960

 4.6

1030

 0.700 26000 40000 0.015

0.033
6

0.2362

 16

0.6299

 16

0.63

 9

0.3543

 0.3

0.012

 1.5

0.059

 NKJ6/16 5.57

1250

 6.47

1450

 0.980 26000 40000 0.019

0.042
7

0.2756

 7

0.2756

 17

0.6693

 12

0.472

 10

0.3937

 0.3

0.012

 1.5

0.059

 NKJ7/12 5.4

1210

 6.43

1450

 0.980 25000 39000 0.017

0.037
7

0.2756

 17

0.6693

 16

0.63

 10

0.3937

 0.3

0.012

 1.5

0.059

 NKJ7/16TN 5.3

1190

 6.27

1410

 0.940 25000 39000 0.021

0.046
9

0.3543

 9

0.3543

 19

0.748

 12

0.472

 12

0.4724

 0.3

0.012

 1.5

0.059

 NKJ9/12A 6.86

1540

 7.6

1710

 1.15 19000 30000 0.018

0.04
9

0.3543

 19

0.748

 16

0.63

 12

0.4724

 0.3

0.012

 1.5

0.059

 NKJ9/16 6.78

1520

 9.03

2030

 1.40 19000 30000 0.024

0.053
10

0.3937

 10

0.3937

 22

0.8661

 13

0.512

 14

0.5512

 0.3

0.012

 1

0.039

 NA4900 9.39

2110

 10.3

2320

 1.55 16000 24000 0.025

0.055
10

0.3937

 22

0.8661

 16

0.63

 14

0.5512

 0.6

0.024

 1.5

0.059

 NKJ10/16A 12.4

2790

 14.8

3330

 2.10 16000 24000 0.032

0.071
10

0.3937

 22

0.8661

 20

0.787

 14

0.5512

 0.3

0.012

 1.5

0.059

 NKJ10/20A 14.7

3300

 18.4

4140

 2.75 16000 24000 0.04

0.088
12

0.4724

 12

0.4724

 24

0.9449

 13

0.512

 16

0.6299

 0.3

0.012

 1

0.039

 NA4901 10.5

2360

 12

2700

 1.85 18000 28000 0.028

0.062
12

0.4724

 24

0.9449

 16

0.63

 16

0.6299

 0.3

0.012

 1.5

0.059

 NKJ12/16A 13

2920

 16.2

3640

 2.50 18000 28000 0.036

0.079
12

0.4724

 24

0.9449

 20

0.787

 16

0.6299

 0.3

0.012

 1.5

0.059

 NKJ12/20A 15.4

3460

 20.2

4540

 3.20 18000 28000 0.046

0.101
12

0.4724

 24

0.9449

 22

0.866

 16

0.6299

 0.3

0.012

 1

0.039

 NA6901A 16.1

3620

 21.3

4790

 3.55 18000 28000 0.051

0.11
15

0.5906

 15

0.5906

 27

1.063

 16

0.63

 19

0.748

 0.3

0.012

 1.5

0.059

 NKJ15/16A 14.1

3170

 19

4270

 2.90 15000 24000 0.042

0.093
15

0.5906

 27

1.063

 20

0.787

 19

0.748

 0.3

0.012

 1.5

0.059

 NKJ15/20A 16.8

3780

 23.6

5310

 3.75 15000 24000 0.054

0.119
15

0.5906

 28

1.1024

 13

0.512

 20

0.7874

 0.3

0.012

 1

0.039

 NA4902 11.8

2650

 15.3

3440

 2.35 14000 22000 0.037

0.082
15

0.5906

 28

1.1024

 23

0.906

 20

0.7874

 0.3

0.012

 1.5

0.059

 NA6902A 18.4

4140

 26.9

6050

 4.20 14000 22000 0.067

0.148
17

0.6693

 17

0.6693

 29

1.1417

 16

0.63

 21

0.8268

 0.3

0.012

 2

0.079

 NKJ17/16A 15.3

3440

 21.6

4860

 3.30 14000 21000 0.047

0.104
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
17

0.6693

 17

0.6693

 29

1.1417

 20

0.787

 21

0.8268

 0.3

0.012

 1.5

0.059

 NKJ17/20A 18.1

4070

 23.9

5370

 4.25 14000 21000 0.059

0.13
  17

0.6693

 30

1.1811

 13

0.512

 22

0.8661

 0.3

0.012

 1

0.039

 NA4903 12.2

2740

 16.4

3690

 2.50 13000 20000 0.04

0.088
  17

0.6693

 30

1.1811

 23

0.906

 22

0.8661

 0.6

0.024

 1

0.039

 NA6903A 19.8

4450

 30.6

6880

 4.75 13000 20000 0.084

0.185
  17

0.6693

 37

1.4567

 20

0.787

 24

0.9449

 0.6

0.024

 1

0.039

 NKJS17A 29.1

6540

 32.8

7370

 5.30 13000 20000 0.108

0.238
20

0.7874

 20

0.7874

 32

1.2598

 16

0.63

 24

0.9449

 0.3

0.012

 1.5

0.059

 NKJ20/16A 16.2

3640

 24.3

5460

 3.70 12000 18000 0.053

0.117
  20

0.7874

 32

1.2598

 20

0.787

 24

0.9449

 0.3

0.012

 1.5

0.059

 NKJ20/20A 19.3

4340

 30.3

6810

 4.80 12000 18000 0.067

0.148
  20

0.7874

 37

1.4567

 17

0.669

 25

0.9843

 0.3

0.012

 1.5

0.059

 NA4904 21.3

4790

 25.5

5730

 6.75 12000 18000 0.084

0.185
  20

0.7874

 37

1.4567

 30

1.181

 25

0.9843

 0.3

0.012

 1.5

0.059

 NA6904A 36.6

8230

 51

11500

 7.95 12000 18000 0.133

0.293
  20

0.7874

 42

1.6535

 20

0.787

 28

1.1024

 0.6

0.024

 1

0.039

 NKJS20A 30.3

6810

 38.4

8630

 6.15 11000 16000 0.13

0.287
22

0.8661

 22

0.8661

 34

1.3386

 16

0.63

 26

1.0236

 0.3

0.012

 1.5

0.059

 NKJ22/16A 16.6

3730

 25.7

5780

 3.95 11000 17000 0.058

0.128
  22

0.8661

 34

1.3386

 20

0.787

 26

1.0236

 0.3

0.012

 2

0.079

 NKJ22/20A 19.7

4430

 32

7190

 5.05 11000 17000 0.071

0.157
  22

0.8661

 39

1.5354

 17

0.669

 28

1.1024

 0.3

0.012

 1.5

0.059

 NA49/22A 23.3

5240

 29.6

6650

 4.55 10000 16000 0.089

0.196
  22

0.8661

 39

1.5354

 30

1.181

 28

1.1024

 0.3

0.012

 1

0.039

 NA69/22A 30.6

6880

 50.7

11400

 7.85 10000 16000 0.163

0.359
25

0.9843

 25

0.9843

 38

1.4961

 20

0.787

 29

1.1417

 0.3

0.012

 2

0.079

 NKJ25/20A 23.4

5260

 36.4

8180

 5.80 9800 15000 0.086

0.19
  25

0.9843

 38

1.4961

 30

1.181

 29

1.1417

 0.3

0.012

 2

0.079

 NKJ25/30A 29.8

6700

 56.4

12700

 8.70 9800 15000 0.13

0.287
  25

0.9843

 42

1.6535

 17

0.669

 30

1.1811

 0.3

0.012

 1.5

0.059

 NA4905 24.3

5460

 31.7

7130

 4.90 9700 15000 0.099

0.218
  25

0.9843

 42

1.6535

 30

1.181

 30

1.1811

 0.3

0.012

 1.5

0.059

 NA6905A 39.7

8920

 59.6

13400

 9.30 9700 15000 0.178

0.392
  25

0.9843

 47

1.8504

 22

0.866

 32

1.2598

 0.6

0.024

 1.5

0.059

 NKJS25A 36

8090

 36.2

8140

 7.40 9200 14000 0.174

0.384
28

1.1024

 28

1.1024

 42

1.6535

 20

0.787

 32

1.2598

 0.3

0.012

 2

0.079

 NKJ28/20A 24.8

5580

 40.4

9080

 6.45 8800 14000 0.104

0.229
  28

1.1024

 42

1.6535

 30

1.181

 32

1.2598

 0.3

0.012

 2

0.079

 NKJ28/30A 35.6

8000

 64.3

14500

 9.95 8800 14000 0.156

0.344
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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