Arrangement Types
Based on installation orientation, load characteristics, and application requirements, matched angular contact ball bearings are primarily arranged in the following three configurations:
Back-to-back matching (DB Type)
Contact lines of the two bearings diverge outward, providing high rigidity and strong moment resistance. DB arrangements support radial loads and bidirectional axial loads, with adjustable preloading for improved running accuracy under demanding conditions.
Face-to-face matching (DF Type)
Contact lines converge inward, allowing better compensation for shaft deflection and mounting misalignment. This structure offers slightly lower rigidity but greater adaptability in applications where installation errors may occur.
Tandem matching (DT Type)
Contact lines are oriented in the same direction, enabling the bearing set to carry extremely high axial loads in a single direction. Since it cannot support reverse axial loads, it is often used in combination with additional bearing supports.
Dimensions
Inner diameter: 30mm～1320mm
Outer diameter: 62mm～1600mm
Width: 32mm～244mm
Popular Models & Technical Parameters
ZWZ offers a complete range of matched angular contact ball bearings in DB, DF and DT configurations, widely used in machine tools, automation and high-precision equipment worldwide.
|
Model |
Arrangement |
d (mm) |
D (mm) |
2B (mm) |
Cr (kN) |
Cor (kN) |
Grease Speed (r/min) |
Oil Speed (r/min) |
Weight (kg) |
|
760204TN1/P4DBB |
DB |
20 |
47 |
28 |
17.2 |
28.3 |
9500 |
14000 |
0.263 |
|
760205TN1/P4DBB |
DB |
25 |
52 |
30 |
17.5 |
30.5 |
8500 |
12000 |
0.300 |
|
7305ACM/DB |
DB |
25 |
62 |
34 |
44.0 |
32.0 |
7500 |
10000 |
0.511 |
|
760206TN1/P4DBB |
DB |
30 |
62 |
32 |
30.0 |
24.5 |
7300 |
10000 |
0.443 |
|
7206BM/DT |
DT |
30 |
62 |
32 |
22.9 |
44.0 |
7300 |
10000 |
0.497 |
|
7306ACM/DB |
DB |
30 |
72 |
38 |
50.0 |
39.0 |
6700 |
9000 |
0.661 |
|
7207BM/DT |
DT |
35 |
72 |
34 |
48.1 |
38.0 |
6300 |
8400 |
0.656 |
|
7307AC/DB |
DB |
35 |
80 |
42 |
63.1 |
50.0 |
5500 |
7500 |
0.907 |
|
7308ACM/DB |
DB |
40 |
90 |
46 |
77.0 |
60.0 |
5300 |
7000 |
1.420 |
|
760209TN1/P4DBB |
DB |
45 |
85 |
38 |
34.5 |
74.0 |
5300 |
7000 |
0.978 |
|
7309ACM/DB |
DB |
45 |
100 |
50 |
108.0 |
88.0 |
6000 |
7000 |
2.030 |
|
7309BM/DT |
DT |
45 |
100 |
50 |
97.5 |
79.0 |
4800 |
6300 |
1.830 |
|
7310ACM/DB |
DB |
50 |
110 |
54 |
117.0 |
98.0 |
8200 |
11000 |
2.320 |
|
7211ACM/DB |
DB |
55 |
100 |
42 |
82.0 |
76.0 |
9000 |
12000 |
1.260 |
|
7311ACM/DB |
DB |
55 |
120 |
58 |
143.0 |
126.0 |
4000 |
5000 |
3.300 |
|
7212ACM/DB |
DB |
60 |
110 |
44 |
74.0 |
77.0 |
4000 |
5300 |
1.860 |
|
7312ACM/DB |
DB |
60 |
130 |
62 |
154.0 |
134.0 |
3600 |
4800 |
4.240 |
|
7213ACM/DB |
DB |
65 |
120 |
46 |
118.0 |
117.0 |
6400 |
9500 |
2.430 |
|
7313ACM/DB |
DB |
65 |
140 |
66 |
186.0 |
169.0 |
3200 |
4300 |
5.120 |
|
7214ACM/DB |
DB |
70 |
125 |
48 |
124.0 |
123.0 |
3300 |
4600 |
2.470 |
|
7314ACM/DB |
DB |
70 |
150 |
70 |
186.0 |
173.0 |
3800 |
5000 |
6.270 |
|
7215BM/DB |
DB |
75 |
130 |
40 |
69.0 |
83.5 |
6000 |
8000 |
1.290 |
|
7315ACM/DB |
DB |
75 |
160 |
74 |
228.0 |
218.0 |
5500 |
7400 |
7.090 |
|
7216ACM/DB |
DB |
80 |
125 |
44 |
89.7 |
105.0 |
6400 |
8500 |
1.970 |
|
7316ACM/DB |
DB |
80 |
170 |
78 |
246.0 |
245.0 |
2500 |
3600 |
8.180 |
|
7217BM/DB |
DB |
85 |
150 |
56 |
162.0 |
174.0 |
2800 |
3800 |
4.530 |
|
7317BM/DB |
DB |
85 |
180 |
82 |
236.0 |
244.0 |
2400 |
3400 |
9.780 |
|
7218BM/DB |
DB |
90 |
140 |
48 |
110.0 |
131.0 |
3800 |
5300 |
2.360 |
|
7318ACM/DB |
DB |
90 |
190 |
86 |
286.0 |
305.0 |
4500 |
6300 |
12.200 |
|
7219BM/DB |
DB |
95 |
200 |
90 |
306.0 |
335.0 |
2000 |
3000 |
13.000 |
|
7220ACM/DB |
DB |
100 |
150 |
48 |
111.0 |
141.0 |
3600 |
5000 |
2.490 |
|
7320ACM/DB |
DB |
100 |
215 |
94 |
345.0 |
395.0 |
1900 |
2800 |
19.400 |
|
7222ACM/DB |
DB |
110 |
200 |
76 |
286.0 |
325.0 |
2000 |
3000 |
9.470 |
|
7322ACM/DB |
DB |
110 |
240 |
100 |
385.0 |
465.0 |
1700 |
2400 |
19.900 |
|
7224ACM/DB |
DB |
120 |
180 |
56 |
164.0 |
214.0 |
4200 |
5600 |
4.270 |
|
7324AC/DB |
DB |
120 |
260 |
110 |
410.0 |
525.0 |
3300 |
4500 |
27.400 |
|
7226BM/DB |
DB |
130 |
230 |
80 |
278.0 |
350.0 |
1800 |
2600 |
15.100 |
|
7326ACM/DB |
DB |
130 |
280 |
116 |
403.0 |
537.0 |
1600 |
2200 |
36.100 |
|
7228ACM/DB |
DB |
140 |
250 |
84 |
355.0 |
470.0 |
3600 |
4800 |
16.900 |
|
73030BM/DB |
DB |
150 |
225 |
70 |
213.0 |
294.0 |
1700 |
2300 |
9.610 |
|
7332AC/DB |
DB |
160 |
290 |
96 |
400.0 |
580.0 |
1300 |
1800 |
29.000 |
|
7034A/C2DB |
DB |
170 |
260 |
84 |
310.0 |
435.0 |
1500 |
2000 |
15.600 |
|
7336B/DB |
DB |
180 |
320 |
104 |
400.0 |
645.0 |
1000 |
1500 |
35.000 |
|
71940A/DB |
DB |
200 |
280 |
76 |
310.0 |
480.0 |
2200 |
3200 |
14.700 |
|
7240AC/DB |
DB |
200 |
360 |
116 |
560.0 |
920.0 |
1300 |
1800 |
50.300 |
|
7044B/DB |
DB |
220 |
340 |
112 |
400.0 |
700.0 |
1100 |
1300 |
36.500 |
|
7244B/DB |
DB |
220 |
400 |
130 |
505.0 |
910.0 |
900 |
1200 |
70.600 |
|
71952B/DF |
DF |
260 |
400 |
92 |
520.0 |
970.0 |
1500 |
2000 |
60.000 |
|
71956AC/DB |
DB |
280 |
380 |
92 |
436.0 |
810.0 |
950 |
1400 |
31.400 |
|
71962X3B/DB |
DB |
310 |
429.5 |
120 |
460.0 |
890.0 |
800 |
1100 |
52.200 |
|
7068B/DF |
DF |
340 |
520 |
164 |
725.0 |
1620.0 |
660 |
900 |
124.000 |
|
7872AC/DB |
DB |
360 |
440 |
76 |
365.0 |
840.0 |
1900 |
1500 |
24.000 |
|
71876B/DB |
DB |
380 |
480 |
92 |
359.0 |
730.0 |
700 |
910 |
37.200 |
|
7084B/DT |
DT |
420 |
620 |
180 |
850.0 |
2130.0 |
520 |
700 |
176.000 |
Application Scope
ZWZ Matched angular contact ball bearings are ideally suited for industrial applications requiring bidirectional load-bearing capacity, high precision, and high rigidity. They are widely utilized in:
● Machine Tools: Machining Center Spindles, CNC Lathes, Grinders, Milling Machines, Boring Machine Spindle Systems.
● Precision Transmission: Servo Motors, Precision Reducers, Ball Screws, Linear Guides & Components.
● General Machinery:Printing Machinery, Textile Machinery, Packaging Machinery, Compressors, Pumping Equipment.
● High-End Equipment:Robotic Joints, Medical Devices, Aerospace Components, Precision Instruments.
● Industrial Automation:Assembly Line Transmission Mechanisms, High-Speed Rotary Equipment, Heavy-Duty Precision Equipment.