|
Needle Roller Bearings without Inner Ring |
  |
|
轴径 shatr Diameter |
NA49..RS 单面密封型号 Designation With sealed On one side |
NA49..2RS 单面密封型号 Designation With sealed On one side |
重量 mass g |
尺寸Dimensions |
基本额定载荷 Basic Load Ratings |
极限转速 Limiting speed grease rpm |
||||||
|
d |
F |
D |
C |
B |
r min |
动Cr Dynamic KN |
静Cr Static KN |
|||||
|
14 |
NA4900RS |
NA 4900.2RS |
24.5 |
10 |
14 |
22 |
13 |
14 |
0.3 |
6.8 |
6.9 |
13000 |
|
16 |
NA4901RS |
NA 4901.2RS |
27.5 |
12 |
16 |
24 |
13 |
14 |
0.3 |
7.6 |
8.3 |
12000 |
|
20 |
NA4902RS |
NA 4902.2RS |
37.0 |
15 |
20 |
28 |
13 |
14 |
0.3 |
8.6 |
10.3 |
10000 |
|
22 |
NA4903RS |
NA 4903.2RS |
40.0 |
17 |
22 |
30 |
13 |
14 |
0.3 |
8.8 |
11.0 |
9000 |
|
25 |
NA4904RS |
NA 4904.2RS |
80.0 |
20 |
25 |
37 |
17 |
18 |
0.3 |
17.3 |
19.9 |
7500 |
|
30 |
NA4905RS |
NA 4905.2RS |
89.5 |
25 |
30 |
42 |
17 |
18 |
0.3 |
19.3 |
24.2 |
6500 |
|
35 |
NA4906RS |
NA 4906.2RS |
104.0 |
30 |
35 |
47 |
17 |
18 |
0.3 |
21.1 |
28.5 |
5500 |
|
42 |
NA4907RS |
NA 4907.2RS |
175.0 |
35 |
42 |
55 |
20 |
21 |
0.6 |
26.5 |
39.5 |
4800 |
|
48 |
NA4908RS |
NA 4908.2RS |
252.0 |
40 |
48 |
62 |
22 |
23 |
0.6 |
36.0 |
53.0 |
4200 |
|
52 |
NA4909RS |
NA 4909.2RS |
290.0 |
45 |
52 |
68 |
22 |
23 |
0.6 |
38.0 |
59.0 |
3900 |
|
58 |
NA4910RS |
NA 4910.2RS |
295.0 |
50 |
58 |
72 |
22 |
23 |
0.6 |
40.0 |
64.0 |
3500 |
1.表中所列基本额定载荷、极限转速和重量，仅供选择参考用。 1.These load,speed and mass isreference of choice only.
2.油润滑时，极限转速为表列数值增加30%，带密封的情况除外。 2.With an effective oil supply,the limiting speed can be increased by about 30%,except for sealed roller followers.