Our comprehensive range of miniature ball bearings includes models such as MR52, MR63, MR83, MR74, MR84, MR104, MR85, MR95, MR105, MR115, MR106, MR126, MR117, MR137, MR128, and MR148. These precision-engineered bearings are designed to meet a variety of application needs, offering unparalleled performance and reliability.
| Bearing number |
Bearing size |
Cr(N) |
Cor(N) |
rpm(grease ZZ) |
rpm(oil OPEN) |
weight(g) |
| MR52ZZ |
2x5x2.5 |
187 |
58 |
85000 |
100000 |
0.16 |
| MR63ZZ |
3x6x2.5 |
208 |
74 |
71000 |
80000 |
0.20 |
| MR83ZZ |
3x8x3 |
560 |
179 |
60000 |
67000 |
0.54 |
| MR74ZZ |
4x7x2.5 |
310 |
115 |
60000 |
67000 |
0.22 |
| MR84ZZ |
4x8x3 |
395 |
139 |
56000 |
67000 |
0.36 |
| MR104ZZ |
4x10x4 |
710 |
270 |
50000 |
60000 |
1.04 |
| MR85ZZ |
5x8x2.5 |
310 |
120 |
53000 |
63000 |
0.26 |
| MR95ZZ |
5x9x3 |
430 |
168 |
50000 |
60000 |
0.50 |
| MR105ZZ |
5x10x4 |
430 |
168 |
50000 |
60000 |
0.95 |
| MR115ZZ |
5x11x4 |
715 |
276 |
50000 |
56000 |
1.49 |
| MR106ZZ |
6x10x3 |
495 |
218 |
45000 |
53000 |
0.56 |
| MR126ZZ |
6x12x4 |
715 |
292 |
43000 |
50000 |
1.27 |
| MR117ZZ |
7x11x3 |
455 |
201 |
43000 |
50000 |
0.62 |
| MR137ZZ |
7x13x4 |
540 |
276 |
40000 |
48000 |
1.58 |
| MR128ZZ |
8x12x3.5 |
545 |
274 |
40000 |
48000 |
0.71 |
| MR148ZZ |
8x14x4 |
820 |
385 |
38000 |
45000 |
1.86 |
| MR84ZZ(H4) |
8x4x2 |
395 |
139 |
56000 |
67000 |
0.36 |
- Custom Bushings-Tailored to meet your specific size requirements, ensuring the perfect fit for your applications.
- Flange Bearings-A wide range of items available to suit various industrial applications, ensuring versatility and efficiency.
- High-Quality Ball Bearings-Available in precision grades P6 and P5, with noise levels Z2, Z3, and Z4. We offer swift delivery to meet your urgent needs.
Founded in 2013, Ningbo Zhenhai Dongsheng Bearing Factory is situated in the Zhenhai District of Ningbo City. We specialize in the research, development, and production of a wide variety of micro bearings, staying at the forefront of industry advancements.
Equipped with state-of-the-art production equipment and advanced manufacturing technology, our company strives for excellence in quality. We offer metric and English deep groove ball bearings, stainless steel bearings, flange series bearings, plane thrust ball bearings, precision thin-wall, low-noise bearings, non-standard bearings, and pulley series with inner diameters of 1-15mm and outer diameters of less than 25mm. Our products have passed the EU environmental protection certification and have ROHS test reports. Export destinations include Hong Kong, Europe, America, South Korea, Japan, and more. These bearings are widely used in household appliances, instruments, micro motors, medical devices, textile machinery, electric tools, high-end toys, fishing gear, and model aircraft. As market dynamics evolve with the rapid growth of the internet and increasing transparency in product pricing, our factory remains committed to quality. Our production supervisor, who has over 15 years of experience, emphasizes, 'there is no best, but better.' We continually invest in training our technical team by organizing visits to other units, aiming to deliver even greater customer satisfaction.
Our company prioritizes high quality and exceptional service for our clients, believing that superior products will significantly benefit their businesses. We warmly welcome friends from around the world to visit, contact us, and explore avenues for cooperation and mutual growth.
We boast excellent equipment, advanced technology, and high-precision testing tools, all of which contribute to improved processing accuracy, ensured product quality, and reduced production cycles. Through continuous technological innovation, we are committed to enhancing product quality and earning customer trust.
Dongsheng bearings find extensive application in various industries including automotive, motorcycle, water pump, electric tools, air compressors, reducers, industrial motors, generators, textile machinery, agricultural machinery, transmission equipment, and machine tools.
In addition to industrial applications, Dongsheng bearings are widely utilized in home appliances and office equipment such as air conditioners, washing machines, vacuum cleaners, massagers, sewing machines, range hoods, microwave ovens, copiers, and more.
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