Double-row angular contact ball bearings are basically two single-row angular contact ball bearings mounted back-to-back except that they have only one inner ring and one outer ring, each having raceways. They can take axial loads in either direction.
Applications
These bearings are mainly applied in the machine tool spindles, high-frequency motors, gas turbines, oil pumps, air compressors, printing machines and other installations.
|
Bearing No. |
Boundary dimensions |
Basic load ratings(kN) |
Limiting speed |
Mass | |||||
|
mm |
Dynamic |
Static |
rpm |
kg | |||||
|
d |
D |
B |
rsmin |
Cr |
Cor |
Grease |
Oil |
| |
|
3200 |
10 |
30 |
14.3 |
0.6 |
8.4 |
6.5 |
14000 |
19000 |
|
|
3201 |
12 |
32 |
15.9 |
0.6 |
8.45 |
6.7 |
13000 |
17000 |
0.060 |
|
3202 |
15 |
35 |
15.9 |
0.6 |
11.1 |
9.05 |
11000 |
15000 |
0.069 |
|
3203 |
17 |
40 |
17.5 |
0.6 |
14.2 |
11.8 |
9900 |
13000 |
0.099 |
|
3204 |
20 |
47 |
20.6 |
1 |
17.5 |
15.2 |
8800 |
12000 |
0.166 |
|
3205 |
25 |
52 |
20.6 |
1 |
19.3 |
18.4 |
7300 |
9800 |
0.183 |
|
3206 |
30 |
62 |
23.8 |
1 |
27.7 |
27.4 |
6300 |
8400 |
0.303 |
|
3207 |
35 |
72 |
27 |
1.1 |
37.5 |
38 |
5500 |
7400 |
0.458 |
|
3208 |
40 |
80 |
30.2 |
1.1 |
40.5 |
45 |
4900 |
6600 |
0.627 |
|
3209 |
45 |
85 |
30.2 |
1.1 |
46.5 |
52 |
4400 |
5900 |
0.678 |
|
3210 |
50 |
90 |
30.2 |
1.5 |
52.5 |
60 |
4000 |
5300 |
0.698 |
|
3211 |
55 |
100 |
33.3 |
1.5 |
66 |
76.5 |
3600 |
4900 |
1.070 |
|
3212 |
60 |
110 |
36.5 |
1.5 |
70.5 |
88 |
3400 |
4500 |
1.340 |
|
3213 |
65 |
120 |
38.1 |
1.5 |
78 |
99 |
3100 |
4200 |
1.680 |
|
3214 |
70 |
125 |
39.7 |
1.5 |
86 |
110 |
2900 |
3900 |
1.840 |
|
3215 |
75 |
130 |
41.3 |
1.5 |
94 |
122 |
2700 |
3600 |
2.000 |
|
3216 |
80 |
140 |
44.4 |
2 |
104 |
131 |
2500 |
3400 |
2.710 |
|
3217 |
85 |
150 |
49.2 |
2 |
121 |
155 |
2400 |
3200 |
3.480 |
|
3218 |
90 |
160 |
52.4 |
2 |
135 |
170 |
2200 |
3000 |
4.240 |
|
3219 |
95 |
170 |
55.6 |
2.1 |
144 |
184 |
2100 |
2800 |
5.100 |
|
3220 |
100 |
180 |
60.3 |
2.1 |
189 |
234 |
2000 |
2700 |
5.880 |