228 NOSE SEIKO CO.,LTD.

NA M

MACHINED RING NEEDLE ROLLER BEARINGSSTAINLESS STEELWITH INNER RING

NA49..M ,NKI..M TYPE■

NA..M

,NKI

..M

NA49..M ,NKI..MSUS/INOX

229NOSE SEIKO CO.,LTD.

STAINLESS STEEL

NA..M

,NKI

..M

Fd dD

C

γ

γ

Daa

FdD

C

γ

γ

NKI..M(d ≦ 8) NA49..M,NKI..M

Shaft Diameter

(mm)

Designation Dimensions (mm) Standard mounting dimensions (mm)

Basic dynamic load rating

Basic static load rating

Limiting speed＊

Mass Usable bearing designation

g

NA49..M NKI..M d D C rs min Fda Da

MAXCr N

Cor N rpm g

(approx) OUTER RING INNER RINGMIN MAX

5NA495M

——

—NKI 5/12MNKI 5/16M

555

0-0.008

131515

101216

0.15 0.3 0.3

788

6.277

6.77.77.7

11.81313

2 7004 6006 500

2 4004 3006 700

34 00032 00032 000

7.311.916.7

RNA495MNK8/12MNK8/16M

IR5710MIR5812MIR5816M

6NA496M

——

—NKI 6/12MNKI 6/16M

666

0-0.008

151616

101216

0.15 0.3 0.3

899

7.288

7.78.78.7

13.81414

3 5005 0006 900

3 1004 8007 500

32 00030 00030 000

9.11317.5

RNA496MNK9/12MNK9/16M

IR6810MIR6912MIR6916M

7NA497M

——

—NKI 7/12MNKI 7/16M

777

0-0.008

171717

101216

0.15 0.3 0.3

91010

8.299

8.79.79.7

15.81515

4 1005 4007 500

3 3005 5008 400

30 00028 00028 000

11.214.319.2

RNA497MNK10/12MNK10/16M

IR7910MIR71012MIR71016M

8 NA498M — 8 0-0.008 19 11 0.2 10 9.2 9.7 17.4 5 700 4 600 28 000 15 RNA498M IR81011M

9——

NA499M

NKI 9/12MNKI 9/16M

—

999

0-0.008

191920

121611

0.3 0.3 0.3

121212

111111

11.511.511.5

171718

6 0008 4006 000

6 70010 300

5 700

26 00026 00026 000

16.722.516.7

NK12/12MNK12/16MRNA499M

IR91212MIR91216MIR91211M

10NA4900M

——

—NKI 10/16MNKI 10/20M

101010

0-0.008

222222

131620

0.3 0.3 0.3

141414

121212

131313

202020

8 40010 80013 600

9 20012 60017 000

24 00024 00024 000

243038

RNA4900MNK14/16MNK14/20M

IR101413MIR101416MIR101420M

12NA4901M

——

—NKI 12/16MNKI 12/20M

121212

0-0.008

242424

131620

0.3 0.3 0.3

161616

141414

151515

222222

8 90011 30014 300

10 20013 80018 700

23 00023 00023 000

26.533.542.5

RNA4901MNK16/16MNK16/20M

IR121613MIR121616MIR121620M

15——

NA4902M

NKI 15/16MNKI 15/20M

—

151515

0-0.008

272728

162013

0.3 0.3 0.3

191920

171717

181819

252526

12 80016 20010 000

17 20023 20012 600

21 00021 00020 000

39.55035

NK19/16MNK19/20MRNA4902M

IR151916MIR151920MIR152013M

17 NA4903M — 17 0-0.008 30 13 0.3 22 19 21 28 10 800 14 300 18 000 39 RNA4903M IR172213M

20 NA4904M — 20 0-0.010 37 17 0.3 25 22 24 35 19 300 23 000 16 000 78.5 RNA4904M IR202517M

25 NA4905M — 25 0-0.010 42 17 0.3 30 27 29 40 21 800 28 200 13 000 92.5 RNA4905M IR253017M

＊ Suitable for oil lubrication. In case of grease lubrication, down to 60％ of this value.