
Basic Parameters
Bearing model 3215ZZ has the following meanings:
- Basic code: Composed of type code, size series code and inner diameter code.
- Type code: "3" indicates double row angular contact ball bearing.
- Size series code: Composed of width series code and diameter series code. In "32", "3" is the diameter series code, indicating the medium series, meaning that the outer diameter of the bearing is medium-sized relative to its inner diameter; "2" is the width series code, indicating that the width of the bearing belongs to a specific width size relative to its diameter series.
- Inner diameter code: "15" indicates the inner diameter size of the bearing. According to the general rule, multiplying the inner diameter code by 5 is the inner diameter of the bearing, so the inner diameter of this bearing is in 15*5=75mm.
- Suffix: "ZZ" indicates double-sided dust cover. This design can prevent dust, impurities, etc. from entering the bearing interior, protect the rolling elements and raceways of the bearing, reduce wear and failure, and also help maintain the lubricating grease inside the bearing and extend the service life of the bearing.

Working Principle
Strong carrying capacity
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Large size design: The inner diameter of 3215ZZ is 75mm, the outer diameter reaches 130mm, and the width is 46.8mm. This relatively large size enables it to withstand higher radial and axial loads, and is particularly suitable for large mechanical equipment that needs to bear heavy loads.
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Optimized internal structure: The rolling elements and raceway design inside the bearing have been carefully optimized. The number and size of rolling elements have been increased, and a reasonable contact angle design has been adopted. This makes the bearing able to distribute pressure more evenly when bearing loads, effectively improving the carrying capacity and impact resistance.
High reliability and stability
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High-quality materials: Made of high-quality bearing steel. This kind of steel has high strength, high hardness and good wear resistance. It can resist wear, fatigue and corrosion that may occur during long-term operation, ensuring that the bearing can maintain stable performance under various harsh working conditions and prolonging service life.
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Rigorous manufacturing process: Follow strict production processes and quality control standards. Each production link undergoes precision processing and strict inspection to ensure the dimensional accuracy and geometric tolerance of the bearing. Thus, the bearing can maintain good concentricity and stability during operation and reduce the generation of vibration and noise.
Good sealing performance
Double-sided dust cover design: The "ZZ" in the model indicates that this bearing is equipped with a double-sided dust cover. This dust cover can effectively prevent external pollutants such as dust, impurities and moisture from entering the bearing interior, avoid wear and corrosion to the rolling elements and raceway of the bearing, protect the lubricating grease inside the bearing, and maintain a good lubrication state, thereby improving the reliability and service life of the bearing.

Product Application
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Large fan: In large fans, it can withstand the huge weight of the fan impeller and the strong centrifugal force generated during rotation. At the same time, it can also deal with the axial thrust generated by the airflow on the impeller to ensure the stable operation of the fan and provide reliable power support for fields such as industrial ventilation and power generation.
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Compressor: Whether it is an air compressor or other types of compressors, a large pressure and vibration will be generated during the compression process. The 3215ZZ bearing, with its high load-carrying capacity and stability, can well adapt to these working conditions and ensure the efficient operation of the compressor. It is widely used in industries such as chemical engineering and refrigeration.
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Crane: In the rotating mechanism and lifting mechanism of a crane, the 3215ZZ bearing plays a crucial role. It can support the huge weight of the crane and withstand various loads generated during lifting and rotation to ensure the safe and reliable operation of the crane. It is an ideal choice for crane equipment in industries such as construction and logistics.
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Large fans
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air compressor
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crane

Product List
Bearing No. |
Dimensions (mm) |
Basic Load Rating (N) |
Weight |
ISO |
GOST |
d |
D |
B |
Dyn. C |
Stat. C0 |
(kg) |
3000 ZZ |
3000 ZZ |
10 |
26 |
12 |
5700 |
3250 |
0.022 |
3001 ZZ |
3001 ZZ |
12 |
28 |
12 |
6200 |
3750 |
0.025 |
3002 ZZ |
3002 ZZ |
15 |
32 |
13 |
8600 |
5400 |
0.036 |
3003 ZZ |
3003 ZZ |
17 |
35 |
14 |
9200 |
6200 |
0.042 |
3004 ZZ |
3004 ZZ |
20 |
42 |
16 |
14500 |
9600 |
0.08 |
3005 ZZ |
3005 ZZ |
25 |
47 |
16 |
15500 |
11100 |
0.1 |
3006 ZZ |
3006 ZZ |
30 |
55 |
19 |
20300 |
15600 |
0.16 |
3007 ZZ |
3007 ZZ |
35 |
62 |
20 |
24500 |
21400 |
0.2 |
3008 ZZ |
3008 ZZ |
40 |
68 |
21 |
25500 |
21700 |
0.25 |
3200 ZZ |
3056200 ZZ |
10 |
30 |
14 |
7410 |
4300 |
0.051 |
3201 ZZ |
3056201 ZZ |
12 |
32 |
15.9 |
10100 |
5600 |
0.058 |
3202 ZZ |
3056202 ZZ |
15 |
35 |
15.9 |
11200 |
6800 |
0.066 |
3203 ZZ |
3056203 ZZ |
17 |
40 |
17.5 |
14000 |
8650 |
0.096 |
3204 ZZ |
3056204 ZZ |
20 |
47 |
20.6 |
18600 |
12000 |
0.16 |
3205 ZZ |
3056205 ZZ |
25 |
52 |
20.6 |
20300 |
14000 |
0.18 |
3206 ZZ |
3056206 ZZ |
30 |
62 |
23.8 |
28100 |
20000 |
0.29 |
3207 ZZ |
3056207 ZZ |
35 |
72 |
27 |
37100 |
27500 |
0.44 |
3208 ZZ |
3056208 ZZ |
40 |
80 |
30.2 |
44900 |
33500 |
0.59 |
3209 ZZ |
3056209 ZZ |
45 |
85 |
30.2 |
47500 |
38000 |
0.63 |
3210 ZZ |
3056210 ZZ |
50 |
90 |
30.2 |
47500 |
39000 |
0.66 |
3211 ZZ |
3056211 ZZ |
55 |
100 |
33.3 |
57200 |
67000 |
1.05 |
3212 ZZ |
3056212 ZZ |
60 |
110 |
36.5 |
72100 |
85000 |
1.4 |
3213 ZZ |
3056213 ZZ |
65 |
120 |
38.1 |
78100 |
95000 |
1.75 |
3214 ZZ |
3056214 ZZ |
70 |
125 |
39.7 |
95000 |
83000 |
1.85 |
3215 ZZ |
3056215 ZZ |
75 |
130 |
41.3 |
95000 |
84000 |
2.1 |
3216 ZZ |
3056216 ZZ |
80 |
140 |
44.4 |
109000 |
102000 |
2.65 |
3217 ZZ |
3056217 ZZ |
85 |
150 |
49.2 |
129000 |
117000 |
3.4 |
3218 ZZ |
3056218 ZZ |
90 |
160 |
52.4 |
142000 |
142000 |
4.15 |
3220 ZZ |
3056220 ZZ |
100 |
180 |
60.3 |
187000 |
175000 |
5.5 |
3222 ZZ |
3056222 ZZ |
110 |
200 |
69.8 |
190000 |
180000 |
8.8 |
3302 ZZ |
3056302 ZZ |
15 |
42 |
19 |
15100 |
9150 |
0.13 |
3303 ZZ |
3056303 ZZ |
17 |
47 |
22.2 |
21200 |
12500 |
0.18 |
3304 ZZ |
3056304 ZZ |
20 |
52 |
22.2 |
22100 |
14300 |
0.22 |
3305 ZZ |
3056305 ZZ |
25 |
62 |
25.4 |
31200 |
20800 |
0.35 |
3306 ZZ |
3056306 ZZ |
30 |
72 |
30.2 |
41000 |
28500 |
0.53 |
3307 ZZ |
3056307 ZZ |
35 |
80 |
34.9 |
48800 |
34000 |
0.73 |
3308 ZZ |
3056308 ZZ |
40 |
90 |
36.5 |
56200 |
43000 |
0.95 |
3309 ZZ |
3056309 ZZ |
45 |
100 |
39.7 |
72100 |
73500 |
1.4 |
3310 ZZ |
3056310 ZZ |
50 |
110 |
44.4 |
88000 |
96500 |
1.95 |
3311 ZZ |
3056311 ZZ |
55 |
120 |
49.2 |
95200 |
108000 |
2.55 |
3312 ZZ |
3056312 ZZ |
60 |
130 |
54 |
112000 |
127000 |
3.25 |
3313 ZZ |
3056313 ZZ |
65 |
140 |
58.7 |
160000 |
126000 |
4 |
3314 ZZ |
3056314 ZZ |
70 |
150 |
63.5 |
161000 |
130000 |
4.9 |
3315 ZZ |
3056315 ZZ |
75 |
160 |
68.3 |
187000 |
160000 |
5.7 |
3316 ZZ |
3056316 ZZ |
80 |
170 |
68.3 |
198000 |
179000 |
6.95 |
3317 ZZ |
3056317 ZZ |
85 |
180 |
73 |
194000 |
185000 |
8.3 |
3800 ZZ |
3800 ZZ |
10 |
19 |
7 |
2100 |
1400 |
0.008 |
3801 ZZ |
3801 ZZ |
12 |
21 |
7 |
2190 |
1550 |
0.008 |
3802 ZZ |
3802 ZZ |
15 |
24 |
7 |
2430 |
1960 |
0.009 |
3803 ZZ |
3803 ZZ |
17 |
26 |
7 |
2480 |
2080 |
0.015 |
3804 ZZ |
3804 ZZ |
20 |
32 |
10 |
5600 |
4850 |
0.02 |
3805 ZZ |
3805 ZZ |
25 |
37 |
10 |
6000 |
5600 |
0.025 |
3806 ZZ |
3806 ZZ |
30 |
42 |
10 |
6300 |
6100 |
0.03 |
3807 ZZ |
3807 ZZ |
35 |
47 |
10 |
6700 |
7000 |
0.035 |
3808 ZZ |
3808 ZZ |
40 |
52 |
10 |
7000 |
7800 |
0.04 |
3809 ZZ |
3809 ZZ |
45 |
58 |
10 |
7200 |
8300 |
0.053 |
3810 ZZ |
3810 ZZ |
50 |
65 |
12 |
8700 |
10400 |
0.07 |
3811 ZZ |
3811 ZZ |
55 |
72 |
13 |
12100 |
15700 |
0.09 |
3812 ZZ |
3812 ZZ |
60 |
78 |
14 |
14500 |
17500 |
0.14 |
3814 ZZ |
3814 ZZ |
70 |
90 |
15 |
19200 |
23800 |
0.19 |
3816 ZZ |
3816 ZZ |
80 |
100 |
15 |
19600 |
25500 |
0.23 |
3818 ZZ |
3818 ZZ |
90 |
115 |
19 |
27000 |
35500 |
0.457 |