单列角接触球轴承可同时承受径向和一个方向轴向载荷,极限转速高,主要用于精密机床和其他高精度、高转速的部位。该类轴承在承受径向载荷时,轴承内圈会产生轴向分力,因此,单列角接触球轴承通常需要与能承受反方向轴向的轴承配套安装使用。
为了提高机床主轴的刚性和使用寿命,通常采用双联、三联甚至多联组配使用。DRZ精密角接触球轴承的接触角分为15°(代号为C)、25°(代号为AC)、40°(代号为B)三种,以满足不同的需求,其外形尺寸有70、72、73三种系列,当客户有要求时,DRZ可生产其他尺寸系列化的角接触球轴承。在轴承结构上DRZ有标准系列和高速系列以及60°的丝杠轴承。
轴承代号 |
外形尺寸 |
安装尺寸 |
额定载荷 |
极限转速 |
予载荷Fao |
轴向刚度Ra |
重量 |
d |
D |
B |
rsmin |
r1min |
da |
Da/Db |
ra |
rb |
Cr |
Cor |
脂 |
油 |
A(轻) |
B(中) |
C(重) |
A(轻) |
B(中) |
C(重) |
≈ |
mm |
min |
max |
max |
max |
kN |
r/min |
N |
N/μm |
Kg |
7204C |
20 |
47 |
14 |
1.0 |
0.3 |
26.5 |
40.5 |
1.0 |
0.3 |
13.1 |
9.6 |
34000 |
50000 |
70 |
210 |
420 |
27 |
39 |
49 |
0.11 |
7204AC |
20 |
47 |
14 |
1.0 |
0.3 |
26.5 |
40.5 |
1.0 |
0.3 |
12.6 |
9.2 |
30000 |
45000 |
115 |
340 |
680 |
72 |
100 |
126 |
0.11 |
7205C |
25 |
52 |
15 |
1.0 |
0.3 |
30.5 |
46.5 |
1.0 |
0.3 |
16.8 |
13.1 |
30000 |
45000 |
90 |
270 |
540 |
32 |
46 |
58 |
0.14 |
7205AC |
25 |
52 |
15 |
1.0 |
0.3 |
30.5 |
46.5 |
1.0 |
0.3 |
16.1 |
12.5 |
26000 |
40000 |
150 |
450 |
900 |
85 |
119 |
150 |
0.14 |
7206C |
30 |
62 |
16 |
1.0 |
0.3 |
36.5 |
55.5 |
1.0 |
0.3 |
23.4 |
18.8 |
24000 |
38000 |
120 |
360 |
720 |
38 |
55 |
69 |
0.21 |
7206AC |
30 |
62 |
16 |
1.0 |
0.3 |
36.5 |
55.5 |
1.0 |
0.3 |
22.3 |
18.0 |
20000 |
34000 |
200 |
600 |
1200 |
101 |
141 |
178 |
0.21 |
7207C |
35 |
72 |
17 |
1.1 |
0.6 |
44 |
63 |
1.1 |
0.6 |
25.8 |
22.9 |
18000 |
30000 |
135 |
400 |
800 |
44 |
63 |
79 |
0.31 |
7207AC |
35 |
72 |
17 |
1.1 |
0.6 |
44 |
63 |
1.1 |
0.6 |
24.5 |
21.9 |
17000 |
28000 |
220 |
660 |
1320 |
116 |
162 |
204 |
0.31 |
7208C |
40 |
80 |
18 |
1.1 |
0.6 |
49 |
71 |
1.1 |
0.6 |
34.1 |
30.9 |
17000 |
28000 |
180 |
540 |
1080 |
50 |
72 |
92 |
0.40 |
7208AC |
40 |
80 |
18 |
1.1 |
0.6 |
49 |
71 |
1.1 |
0.6 |
32.5 |
29.5 |
15000 |
24000 |
295 |
880 |
1760 |
134 |
187 |
235 |
0.40 |
7209C |
45 |
85 |
19 |
1.1 |
0.6 |
54 |
76 |
1.1 |
0.6 |
35.5 |
33.8 |
16000 |
26000 |
187 |
560 |
1120 |
53 |
77 |
97 |
0.45 |
7209AC |
45 |
85 |
19 |
1.1 |
0.6 |
54 |
76 |
1.1 |
0.6 |
33.8 |
32.3 |
14000 |
22000 |
300 |
900 |
1800 |
142 |
199 |
250 |
0.45 |
7210C |
50 |
90 |
20 |
1.1 |
0.6 |
57.5 |
83 |
1.1 |
0.6 |
43.3 |
40.6 |
15000 |
24000 |
225 |
670 |
1340 |
57 |
82 |
104 |
0.49 |
7210AC |
50 |
90 |
20 |
1.1 |
0.6 |
57.5 |
83 |
1.1 |
0.6 |
41.3 |
38.7 |
14000 |
22000 |
365 |
1090 |
2180 |
151 |
212 |
267 |
0.49 |
7211C |
55 |
100 |
21 |
1.5 |
0.6 |
63 |
92 |
1.5 |
0.6 |
53.6 |
51.1 |
14000 |
22000 |
290 |
870 |
1740 |
63 |
91 |
116 |
0.65 |
7211AC |
55 |
100 |
21 |
1.5 |
0.6 |
63 |
92 |
1.5 |
0.6 |
51.1 |
48.8 |
13000 |
20000 |
460 |
1380 |
2760 |
169 |
236 |
297 |
0.65 |
7212C |
60 |
110 |
22 |
1.5 |
0.6 |
71.5 |
100.5 |
1.5 |
0.6 |
55.8 |
56.2 |
12000 |
19000 |
305 |
910 |
1820 |
67 |
97 |
123 |
0.86 |
7212AC |
60 |
110 |
22 |
1.5 |
0.6 |
71.5 |
100.5 |
1.5 |
0.6 |
53.0 |
53.5 |
11000 |
18000 |
480 |
1440 |
2880 |
179 |
251 |
316 |
0.86 |
7213C |
65 |
120 |
23 |
1.5 |
0.6 |
76.5 |
108.5 |
1.5 |
0.6 |
67.5 |
69.0 |
11000 |
18000 |
355 |
1060 |
2120 |
74 |
107 |
136 |
1.08 |
7213AC |
65 |
120 |
23 |
1.5 |
0.6 |
76.5 |
108.5 |
1.5 |
0.6 |
64.2 |
65.8 |
9500 |
16000 |
570 |
1710 |
3420 |
198 |
277 |
348 |
1.08 |
7214C |
70 |
125 |
24 |
1.5 |
0.6 |
81.5 |
113.5 |
1.5 |
0.6 |
70.2 |
74.6 |
10000 |
17000 |
370 |
1110 |
2220 |
78 |
113 |
143 |
1.19 |
7214AC |
70 |
125 |
24 |
1.5 |
0.6 |
81.5 |
113.5 |
1.5 |
0.6 |
66.6 |
71.1 |
9000 |
15000 |
590 |
1770 |
3540 |
209 |
293 |
368 |
1.19 |
7215C |
75 |
130 |
25 |
1.5 |
0.6 |
86.5 |
118.5 |
1.5 |
0.6 |
72.7 |
80.2 |
9500 |
16000 |
385 |
1150 |
2300 |
82 |
119 |
151 |
1.29 |
7215AC |
75 |
130 |
25 |
1.5 |
0.6 |
86.5 |
118.5 |
1.5 |
0.6 |
68.9 |
76.3 |
8500 |
14000 |
615 |
1840 |
3680 |
220 |
309 |
388 |
1.29 |
7216C |
80 |
140 |
26 |
2.0 |
1.0 |
92.5 |
128 |
2.0 |
1.0 |
86.5 |
96.5 |
9000 |
15000 |
460 |
1380 |
2760 |
90 |
130 |
165 |
1.58 |
7216AC |
80 |
140 |
26 |
2.0 |
1.0 |
92.5 |
128 |
2.0 |
1.0 |
82.1 |
91.9 |
8000 |
13000 |
750 |
2250 |
4500 |
240 |
338 |
424 |
1.58 |
7217C |
85 |
150 |
28 |
2.0 |
1.0 |
98.5 |
137 |
2.0 |
1.0 |
97.4 |
107.5 |
8500 |
14000 |
515 |
1540 |
3080 |
93 |
134 |
169 |
1.96 |
7217AC |
85 |
150 |
28 |
2.0 |
1.0 |
98.5 |
137 |
2.0 |
1.0 |
92.5 |
102.4 |
7500 |
12000 |
825 |
2470 |
4940 |
247 |
347 |
436 |
1.96 |
7218C |
90 |
160 |
30 |
2.0 |
1.0 |
103 |
147 |
2.0 |
1.0 |
121.9 |
131.3 |
8000 |
13000 |
655 |
1960 |
3920 |
110 |
160 |
202 |
2.44 |
7218AC |
90 |
160 |
30 |
2.0 |
1.0 |
103 |
147 |
2.0 |
1.0 |
115.8 |
124.6 |
7000 |
11000 |
1050 |
3150 |
6300 |
276 |
394 |
496 |
4.44 |
7219C |
95 |
170 |
32 |
2.1 |
1.1 |
112 |
153 |
2.1 |
1.1 |
128.9 |
145.1 |
7500 |
11000 |
1050 |
3150 |
6300 |
276 |
394 |
496 |
2.93 |
7219AC |
95 |
170 |
32 |
2.1 |
1.1 |
112 |
153 |
2.1 |
1.1 |
122.5 |
138.3 |
6700 |
10000 |
1050 |
3150 |
6300 |
286 |
410 |
517 |
2.93 |
7220C |
100 |
180 |
34 |
2.1 |
1.1 |
116 |
164 |
2.1 |
1.1 |
146.2 |
165.9 |
7000 |
11000 |
770 |
2310 |
4620 |
114 |
165 |
208 |
3.51 |
7220AC |
100 |
180 |
34 |
2.1 |
1.1 |
116 |
164 |
2.1 |
1.1 |
138.9 |
158.2 |
6700 |
10000 |
1240 |
3720 |
7440 |
305 |
427 |
537 |
3.51 |
7221C |
105 |
190 |
36 |
2.1 |
1.1 |
122 |
173 |
2.1 |
1.1 |
164.3 |
188.2 |
7000 |
11000 |
890 |
2670 |
5340 |
121 |
175 |
221 |
4.17 |
7221AC |
105 |
190 |
36 |
2.1 |
1.1 |
122 |
173 |
2.1 |
1.1 |
156.3 |
179.5 |
6300 |
9500 |
1430 |
4290 |
8580 |
323 |
454 |
570 |
4.17 |
7222C |
110 |
200 |
38 |
2.1 |
1.1 |
130 |
181 |
2.1 |
1.1 |
170.4 |
202.5 |
6700 |
10000 |
920 |
2760 |
5520 |
127 |
184 |
233 |
4.95 |
7222AC |
110 |
200 |
38 |
2.1 |
1.1 |
130 |
181 |
2.1 |
1.1 |
161.8 |
193.0 |
6000 |
9000 |
1480 |
4440 |
8880 |
341 |
478 |
601 |
4.95 |
7224C |
120 |
215 |
40 |
2.1 |
1.1 |
143 |
192 |
2.1 |
1.1 |
175.4 |
218.4 |
6000 |
9000 |
950 |
2850 |
5700 |
133 |
193 |
245 |
6.01 |
7224AC |
120 |
215 |
40 |
2.1 |
1.1 |
143 |
192 |
2.1 |
1.1 |
166.3 |
207.9 |
5300 |
8000 |
1500 |
4500 |
9000 |
358 |
502 |
631 |
6.01 |
7226C |
130 |
230 |
40 |
3.0 |
1.1 |
151.5 |
209 |
3.0 |
1.1 |
200.6 |
258.3 |
5600 |
8500 |
1050 |
3100 |
6200 |
139 |
202 |
255 |
6.41 |
7226AC |
130 |
230 |
40 |
3.0 |
1.1 |
151.5 |
209 |
3.0 |
1.1 |
190.4 |
246.2 |
5000 |
7500 |
1600 |
4800 |
9600 |
373 |
525 |
659 |
6.41 |
7228C |
140 |
250 |
42 |
3.0 |
1.1 |
165 |
225.5 |
3.0 |
1.1 |
223.6 |
306.6 |
5000 |
7500 |
1200 |
3600 |
7200 |
152 |
221 |
279 |
8.17 |
7228AC |
140 |
250 |
42 |
3.0 |
1.1 |
165 |
225.5 |
3.0 |
1.1 |
212.3 |
292.2 |
4500 |
6700 |
1900 |
5700 |
11400 |
410 |
575 |
723 |
8.17 |
7230C |
150 |
270 |
45 |
3.0 |
1.1 |
178.5 |
242 |
3.0 |
1.1 |
240.9 |
341.5 |
4500 |
6700 |
1280 |
3800 |
7600 |
158 |
229 |
290 |
10.38 |
7230AC |
150 |
270 |
45 |
3.0 |
1.1 |
178.5 |
242 |
3.0 |
1.1 |
228.7 |
325.5 |
4000 |
6000 |
2050 |
6100 |
12200 |
426 |
599 |
753 |
10.38 |
7232C |
160 |
290 |
48 |
3.0 |
1.1 |
193.5 |
257 |
3.0 |
1.1 |
248.6 |
365.8 |
4300 |
6300 |
1330 |
4000 |
8000 |
165 |
240 |
303 |
13.10 |
7232AC |
160 |
290 |
48 |
3.0 |
1.1 |
193.5 |
257 |
3.0 |
1.1 |
236.1 |
348.6 |
3800 |
5600 |
2100 |
6300 |
12600 |
446 |
627 |
788 |
13.10 |
7234C |
170 |
310 |
52 |
4.0 |
1.5 |
202 |
278.5 |
4.0 |
1.5 |
300.2 |
459.2 |
3800 |
5600 |
1600 |
4800 |
9600 |
173 |
251 |
318 |
15.93 |
7234AC |
170 |
310 |
52 |
4.0 |
1.5 |
202 |
278.5 |
4.0 |
1.5 |
285.0 |
437.6 |
3600 |
5300 |
2500 |
7500 |
15000 |
468 |
658 |
827 |
15.93 |
7236C |
180 |
320 |
52 |
4.0 |
1.5 |
212 |
288.5 |
4.0 |
1.5 |
311.2 |
490.8 |
3800 |
5600 |
1660 |
4900 |
9800 |
181 |
264 |
334 |
16.61 |
7236AC |
180 |
320 |
52 |
4.0 |
1.5 |
212 |
288.5 |
4.0 |
1.5 |
295.5 |
467.7 |
3400 |
5000 |
2650 |
7900 |
15800 |
492 |
691 |
869 |
16.61 |
7238C |
190 |
340 |
55 |
4.0 |
1.5 |
227 |
303.5 |
4.0 |
1.5 |
321.3 |
524.8 |
3400 |
5000 |
1700 |
5100 |
10200 |
190 |
276 |
349 |
20.29 |
7238AC |
190 |
340 |
55 |
4.0 |
1.5 |
227 |
303.5 |
4.0 |
1.5 |
305.1 |
500.1 |
3200 |
4800 |
2700 |
8100 |
16200 |
515 |
724 |
910 |
20.29 |
7240C |
200 |
360 |
58 |
4.0 |
1.5 |
242 |
318.5 |
4.0 |
1.5 |
330.9 |
558.6 |
3200 |
4800 |
1760 |
5300 |
10600 |
198 |
288 |
365 |
24.49 |
7240AC |
200 |
360 |
58 |
4.0 |
1.5 |
242 |
318.5 |
4.0 |
1.5 |
314.2 |
532.3 |
3000 |
4500 |
2800 |
8400 |
16800 |
538 |
756 |
951 |
24.49 |