Page 130 - needle bearings

Machined-ring needle roller bearings
NTN

With inner ring
C
r
Type NA49
r
Type NA59 s
Type NA69
Type NKʴʴIR ПD ПdПF

Type NA49ʝR
Type NA59
Type NA69ʝR ʢdʽ30mmʣ
Type NKʴIR

d 17ʙ32mm

Boundary dimensions Basic load ratings Limiting speeds Bearing numbers
dynamic static dynamic static
mm N kgf r/min
grease oil
d D C rs min 1) F s 2) Cr Cor Cr Cor
17 30 23 0.3 22 1 18 200 27 200 1 850 2 770 12 000 18 000 NA6903R

32 16 0.3 24 0.5 15 200 22 300 1 550 2 280 11 000 17 000 NK24/16RʴIR20ʷ24ʷ16
32 20 0.3 24 0.5 18 600 28 800 1 890 2 930 11 000 17 000 NK24/20RʴIR20ʷ24ʷ20
20 37 17 0.3 25 0.8 21 300 25 500 2 170 2 600 11 000 16 000 NA4904R
37 23 0.3 25 0.8 28 400 37 000 2 900 3 750 11 000 16 000 NA5904
37 30 0.3 25 1 36 500 50 500 3 700 5 150 11 000 16 000 NA6904R
34 16 0.3 26 0.5 15 600 23 600 1 590 2 410 10 000 15 000 NK26/16RʴIR22ʷ26ʷ16
34 20 0.3 26 0.5 19 100 30 500 1 940 3 100 10 000 15 000 NK26/20RʴIR22ʷ26ʷ20
22 39 17 0.3 28 0.8 23 200 29 300 2 360 2 990 9 500 14 000 NA49/22R
39 23 0.3 28 0.8 26 400 37 500 2 690 3 850 9 500 14 000 NA59/22
39 30 0.3 28 0.5 40 000 58 500 4 050 6 000 9 500 14 000 NA69/22R
38 20 0.3 29 1 22 200 34 000 2 270 3 450 9 500 14 000 NK29/20RʴIR25ʷ29ʷ20
38 30 0.3 29 1.5 27 500 50 500 2 810 5 150 9 500 14 000 NK29/30RʴIR25ʷ29ʷ30
25 42 17 0.3 30 0.8 24 000 31 500 2 450 3 200 8 500 13 000 NA4905R
42 23 0.3 30 0.8 30 500 43 000 3 150 4 350 8 500 13 000 NA5905
42 30 0.3 30 1 41 500 63 000 4 200 6 400 8 500 13 000 NA6905R
42 20 0.3 32 1 23 500 37 500 2 400 3 850 8 500 13 000 NK32/20RʴIR28ʷ32ʷ20
42 30 0.3 32 1.5 34 000 60 500 3 450 6 150 8 500 13 000 NK32/30RʴIR28ʷ32ʷ30
28 45 17 0.3 32 0.8 24 800 33 500 2 530 3 400 8 500 13 000 NA49/28R
45 23 0.3 32 0.8 32 000 45 500 3 250 4 650 8 500 13 000 NA59/28
45 30 0.3 32 1 43 000 67 000 4 350 6 850 8 500 13 000 NA69/28R

45 20 0.3 35 0.5 24 800 41 500 2 520 4 250 7 500 11 000 NK35/20RʴIR30ʷ35ʷ20
45 30 0.3 35 1 36 000 66 500 3 650 6 800 7 500 11 000 NK35/30RʴIR30ʷ35ʷ30
30 47 17 0.3 35 0.8 25 500 35 500 2 600 3 600 7 500 11 000 NA4906R
47 23 0.3 35 0.8 32 500 48 500 3 350 4 950 7 500 11 000 NA5906
47 30 0.3 35 1 42 500 67 500 4 300 6 900 7 500 11 000 NA6906R
47 20 0.3 37 0.5 25 300 43 500 2 580 4 400 7 500 11 000 NK37/20RʴIR32ʷ37ʷ20
32 47 30 0.3 37 1 36 500 69 500 3 750 7 100 7 500 11 000 NK37/30RʴIR32ʷ37ʷ30
52 20 0.6 40 0.8 31 500 47 500 3 200 4 850 6 500 10 000 NA49/32R

Note 1) Allowable minimum chamfer dimension r . 2) Allowable axial stroking value of inner ring against outer ring.
Remarks: Nominal code number of inner ring (IR) comprises the codes of IR bore diameterʷouter diameterʷwidth.
B-68