Discover the excellence of our miniature ball bearings, featuring models: MR52, MR63, MR83, MR74, MR84, MR104, MR85, MR95, MR105, MR115, MR106, MR126, MR117, MR137, MR128, and 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 |
- Bushing-custom sizes available to meet your exact specifications.
- Flange Bearings-offering a wide range of options to suit various needs.
- Ball Bearings-crafted to P6 and P5 quality standards, available in noise levels Z2, Z3, and Z4, ensuring quick delivery.
Established in 2013 in the Zhenhai District of Ningbo City, Ningbo Zhenhai Dongsheng Bearing Factory specializes in the research, development, and production of high-quality micro bearings.
Our company boasts state-of-the-art production equipment and cutting-edge bearing manufacturing technology, all driven by a commitment to scientific excellence. We offer a complete range of 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. Our products, with inner diameters of 1-15mm and outer diameters of less than 25mm, have passed EU environmental protection certifications and ROHS test reports. Exported worldwide to Hong Kong, Europe, the Americas, South Korea, Japan, and more, our bearings are essential in household appliances, instruments, micro motors, medical devices, textile machinery, electric tools, high-end toys, fishing gear, model aircraft, and more. Amid the rapid market economy growth and increasing online transparency, our factory emphasizes quality to secure a market presence. Our Production Supervisor, with over 15 years of industry experience, emphasizes that there is always room for improvement. We continuously send our technical team to learn and innovate, ensuring maximum customer satisfaction.
Our commitment to top-quality products and exceptional service helps our clients thrive in their businesses. We warmly welcome friends from around the globe to visit and collaborate for mutual growth and success.
Equipped with cutting-edge devices and high-precision testers, we significantly enhance processing accuracy, ensure product quality, and reduce production cycles. Through continuous technological innovation, we consistently elevate product quality, earning our customers' trust.
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.
Our bearings are also integral to home 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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