Page 134 - needle bearings

Machined-ring needle roller bearings
NTN

With inner ring

C C
Type NA49 r r
Type NA59 r r
Type NA69
Type NKʴʴIR
ПD Пd ПF ПD Пd ПF

Type NA49ʝR Type NA69ʝR
Type NA59
Type NKʝRʴIR

d 55ʙ85mm

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
80 34 1 63 1.5 76 500 140 000 7 800 14 300 4 300 6 500 NA5911
55
80 45 1 63 1.5 94 000 183 000 9 600 18 600 4 300 6 500 NA6911R
82 25 1 68 1 44 500 89 000 4 500 9 050 4 000 6 000 NK68/25RʴIR60ʷ68ʷ25
82 35 0.6 68 1 63 000 139 000 6 400 14 200 4 000 6 000 NK68/35RʴIR60ʷ68ʷ35
60 85 25 1 68 1.5 61 500 108 000 6 250 11 000 4 000 6 000 NA4912R
85 34 1 68 1.5 80 500 153 000 8 200 15 600 4 000 6 000 NA5912
85 45 1 68 1.5 95 500 191 000 9 750 19 400 4 000 6 000 NA6912R

90 25 0.6 73 1 54 000 100 000 5 500 10 200 3 700 5 500 NK73/25RʴIR65ʷ73ʷ25
90 25 1 72 1.5 62 500 112 000 6 350 11 400 3 700 5 500 NA4913R
65 90 34 1 72 1.5 84 000 165 000 8 600 16 800 3 700 5 500 NA5913
90 35 0.6 73 1 76 500 156 000 7 800 16 000 3 700 5 500 NK73/35RʴIR65ʷ73ʷ35
90 45 1 72 1.5 97 000 198 000 9 900 20 200 3 700 5 500 NA6913R
95 25 1 80 0.8 57 000 119 000 5 800 12 200 3 300 5 000 NK80/25RʴIR70ʷ80ʷ25
95 35 1 80 0.8 79 500 184 000 8 150 18 700 3 300 5 000 NK80/35RʴIR70ʷ80ʷ35
70 100 30 1 80 1.5 85 500 156 000 8 750 15 900 3 300 5 000 NA4914R
100 40 1 80 1.5 103 000 187 000 10 500 19 100 3 300 5 000 NA5914
100 54 1 80 1 130 000 267 000 13 300 27 200 3 300 5 000 NA6914R
105 25 1 85 1 70 500 123 000 7 200 12 600 3 100 4 700 NK85/25RʴIR75ʷ85ʷ25
105 30 1 85 1.5 87 000 162 000 8 900 16 500 3 100 4 700 NA4915R
75 105 35 1 85 1 100 000 193 000 10 200 19 700 3 100 4 700 NK85/35RʴIR75ʷ85ʷ35
105 40 1 85 1.5 109 000 205 000 11 100 20 900 3 100 4 700 NA5915
105 54 1 85 1 132 000 277 000 13 500 28 300 3 100 4 700 NA6915R
110 25 1 90 1 71 500 128 000 7 300 13 100 2 900 4 400 NK90/25RʴIR80ʷ90ʷ25
110 30 1 90 1.5 90 500 174 000 9 250 17 700 2 900 4 400 NA4916R
80 110 35 1 90 1 104 000 208 000 10 600 21 200 2 900 4 400 NK90/35RʴIR80ʷ90ʷ35
110 40 1 90 1.5 115 000 223 000 11 700 22 700 2 900 4 400 NA5916
110 54 1 90 1.5 137 000 298 000 14 000 30 500 2 900 4 400 NA6916R

115 26 1 95 1.5 74 500 137 000 7 600 14 000 2 800 4 200 NK95/26RʴIR85ʷ95ʷ26
85
115 36 1 95 1.5 108 000 223 000 11 100 22 700 2 800 4 200 NK95/36RʴIR85ʷ95ʷ36

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-72