Our miniature ball bearings series including MR52, MR63, MR83, MR74, MR84, MR104, MR85, MR95, MR105, MR115, MR106, MR126, MR117, MR137, MR128, and MR148 offers unparalleled 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 to meet your specific needs
- Flange bearing----available in a wide range of sizes to suit various applications
- Ball bearing-----premium quality in P6, P5, with noise levels Z2, Z3, Z4, ensuring fast delivery times
Ningbo Dongsheng Bearing Co., Ltd., established in 2013 in Zhenhai District, Ningbo City, excels in the research, development, and production of an extensive array of micro bearings.
Our company boasts state-of-the-art production equipment and cutting-edge bearing manufacturing technology, maintaining a scientific approach to achieve superior quality. We specialize in metric and English deep groove ball bearings, stainless steel bearings, flange series bearings, plane thrust ball bearings, precision thin-wall bearings, low-noise bearings, non-standard bearings, and a pulley series with inner diameters of 1-15mm and outer diameters under 25mm. Certified under EU environmental protection standards and accompanied by ROHS test reports, our products are exported globally to regions including Hong Kong, Europe, America, South Korea, and Japan. Our bearings find applications in household appliances, instruments, micro motors, medical devices, textile machinery, electric tools, high-end toys, fishing gear, model aircraft, and more. In the face of an increasingly transparent market and fierce competition, we prioritize quality to secure our market position. Our production supervisor, with over 15 years of experience, ensures excellence in the bearing production process, upholding the principle: "There is no best, but better." We continually organize our technical team to visit and learn from other units, striving to provide customers with the most satisfactory products.
Our commitment to high quality and excellent customer service ensures that our clients receive the best support to enhance their business. We welcome friends from around the world to visit us and explore opportunities for cooperation and mutual growth.
Equipped with excellent machinery, advanced technology, and high-precision testing equipment, we significantly enhance processing accuracy, ensure product quality, and reduce production cycles. Through ongoing technological innovations, we continually improve our product quality and earn the trust of our customers.
Dongsheng bearings are indispensable 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.
Dongsheng bearings are also integral to household 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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