Discover our range of precision-engineered miniature ball bearings, designed for optimal performance: MR52, MR63, MR83, MR74, MR84, MR104, MR85, MR95, MR105, MR115, MR106, MR126, MR117, MR137, MR128, MR148.
| 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 |
- Bushings-custom sizes tailored to your needs.
- Flange Bearings-available in a wide array of items to suit diverse applications.
- Ball Bearings-offering premium quality P6, P5 with noise levels Z2, Z3, Z4. Swift delivery guaranteed.
Founded in 2013, Ningbo Zhenhai Dongsheng Bearing Factory, located in the Zhenhai District of Ningbo City, excels in developing and producing a myriad of micro bearings.
Our factory boasts state-of-the-art production equipment and cutting-edge bearing manufacturing technology. We emphasize quality through a scientific approach to achieve unparalleled excellence. Our product range includes 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 pulley series, with inner diameters of 1-15mm and outer diameters under 25mm. Certified by EU environmental protection standards and ROHS, our products are exported globally to regions including Hong Kong, Europe, America, South Korea, and Japan. They are extensively utilized in household appliances, instruments, micro motors, medical devices, textile machinery, electric tools, high-end toys, fishing gear, and model aircraft. In an increasingly competitive market, we prioritize superior product quality to secure our market position. Under the guidance of our production supervisor, who has over 15 years of experience in the bearing industry, we adhere to the principle of continuous improvement. Our technical team frequently visits other units to enhance their skills, striving to deliver even more satisfying solutions to our customers.
We are committed to providing high-quality products and exceptional service, ensuring our clients achieve greater business success. We warmly invite friends from around the world to visit and cooprate with us for mutual growth and development.
Equipped with advanced machinery, cutting-edge technology, and high-precision testing tools, we significantly enhance processing accuracy, ensure superior product quality, and shorten production cycles. Our relentless pursuit of technological innovation continually elevates product quality, earning us customer trust.
Dongsheng bearings are extensively applied in automobiles, motorcycles, water pumps, electric tools, air compressors, reducers, industrial motors, generators, textile machinery, agricultural machinery, transmission equipment, and machine tools.
Dongsheng bearings also find widespread use in household appliances and office equipment, including air conditioners, washing machines, vacuum cleaners, massagers, sewing machines, range hoods, microwave ovens, copiers, and more.
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