Products > Rolling > Angular contact ball bearings
                 Precision double row cylindrical roller bearings   NN 30 KTN(KTN9)

Bearing number
Dimensions
（mm）
Mounting dimensions
（mm）
Basic load ratings
(KN)
Limiting Speed
(r/min)
Mass
(kg)
TCB
d
D
B
r min
E
S
da min
da max
Da min
Da max
Cr
Cor
Grease
Oil
30
55
19
1
48.5
1.8
35
—
49
50
30.8
37.5
16000
18000
0.19
  
35
62
20
1
55
1.8
40
—
56
57
39.1
50
14000
16000
0.25
  
40
68
21
1
61
1.3
45
—
62
63
42.9
56
12000
14000
0.3
  
45
75
23
1
67.5
2
50
—
69
70
50.1
65.5
11000
13000
0.38
  
50
80
23
1
72.5
2
55
—
74
75
52.8
73.5
10000
12000
0.42
  
55
90
26
1.1
81
2
61.5
—
82
83.5
69.3
96.5
9500
11000
0.62
  
60
95
26
1.1
86.1
2
66.5
—
87
88.5
73.7
106
9000
10000
0.66
  
65
100
26
1.1
91
2
71.5
—
92
93.5
76.5
116
8500
9500
0.71
  
70
110
30
1.1
100
2.5
76.5
—
101
103.5
96.8
150
7500
8500
1
  
75
115
30
1.1
105
81.5
—
106
108.5
96.8
150
7000
8000
1.1
  
80
125
34
1.1
113
3
86.5
—
114
118.5
119
186
6700
7500
1.5
  
85
130
34
1.1
118
2.5
91.5
—
119
123.5
125
204
6300
7000
1.55
  
90
140
37
1.5
127
2.8
98
—
129
132
138
216
6000
6700
1.95
  
95
145
37
1.5
132
2.8
103
—
134
137
142
232
5600
6300
2.05
  
100
150
37
1.5
137
2.8
108
—
139
142
151
250
5300
6000
2.1
  
105
160
41
2
146
1.8
115
—
148
150
190
305
5000
5600
2.7
  
110
170
45
2
155
3.8
120
—
157
160
220
360
4800
5300
3.4
  
120
180
46
2
165
3.8
130
—
167
170
229
390
4500
5000
3.7
  
130
200
52
2.1
182
3.8
140
—
183
190
286
475
4000
4500
5.55
  

 
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