Discover our range of miniature ball bearings, including MR52, MR63, MR83, MR74, MR84, MR104, MR85, MR95, MR105, MR115, MR106, MR126, MR117, MR137, MR128, and MR148. Each engineered for precision 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 |
- Bushing-customized sizes available to meet your specific requirements.
- Flange Bearings-various items available to suit your needs.
- Ball Bearings-offering high quality in P6, P5 classifications, with noise levels Z2, Z3, Z4. We ensure rapid delivery to keep your operations running smoothly.
Ningbo Zhenhai Dongsheng Bearing Factory was officially established in 2013, strategically located in the Zhenhai District of Ningbo City. We specialize in the research, development, and production of various micro bearings.
Our company boasts state-of-the-art production equipment and advanced bearing manufacturing technology. We pursue excellence with a scientific approach to quality. Our main offerings include 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 ranging from 1-15mm and outer diameters less than 25mm. All our products comply with EU environmental protection standards and come with ROHS test reports. We export to Hong Kong, Europe, America, South Korea, Japan, and beyond. Our bearings are utilized in household appliances, instruments, micro motors, medical devices, textile machinery, electric tools, premium toys, fishing gear, model aircraft, and more. In a rapidly evolving market landscape characterized by increasing competition and transparency, we prioritize product quality to secure our market position. Our production supervisor, with over 15 years of industry experience, is committed to continuous improvement in bearing production processes, advocating the mantra: 'there is no best, only better.' We actively engage in knowledge exchange to enhance customer satisfaction.
Our commitment to high-quality products and exceptional service underpins our goal to support our clients' business success. We welcome friends from around the globe to visit, contact, and collaborate with us for mutual growth and development.
Equipped with advanced machinery, cutting-edge technology, and high-precision testing apparatus, we significantly enhance processing accuracy, ensure superior product quality, and reduce production cycles. Through relentless technological innovation, we continue to improve product quality, earning the trust of our customers.
Dongsheng bearings are extensively utilized in automobiles, motorcycles, water pumps, electric tools, air compressors, reducers, industrial motors, generators, textile machinery, agricultural machinery, transmission equipment, machine tools, and more.
Dongsheng bearings also find applications in home appliances and office equipment, such as air conditioners, washing machines, vacuum cleaners, massagers, sewing machines, range hoods, microwave ovens, copiers, and other devices.
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