Discover our range of premium miniature ball bearings, including models MR52, MR63, MR83, MR74, MR84, MR104, MR85, MR95, MR105, MR115, MR106, MR126, MR117, MR137, MR128, and MR148. Each meticulously engineered bearing ensures durability and performance for various applications.
| 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 |
- Customizable Bushing Sizes - Tailored to Meet Your Specific Requirements
- Flange Bearing - Wide Range of Items Available for Diverse Needs
- Top-tier Ball Bearings - Featuring P6, P5 Precision, Noise Levels Z2, Z3, Z4, and Swift Delivery Times
Ningbo Dongsheng Bearing Co., Ltd., founded in 2013 in the heart of Zhenhai District, Ningbo City, is dedicated to the innovative research, development, and production of micro bearings. Our commitment to quality and excellence is unwavering.
Our company is equipped with state-of-the-art production facilities and cutting-edge bearing manufacturing technology, driving us towards excellence with a scientific approach to quality. We specialize in 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 under 25mm, our products meet stringent EU environmental protection standards and hold ROHS test reports. Exporting to Hong Kong, Europe, America, South Korea, Japan, and beyond, our bearings find extensive use in household appliances, instruments, micro motors, medical devices, textile machinery, electric tools, high-end toys, fishing gear, and model aircraft. As the market evolves and competition intensifies with the transparency of internet pricing, we remain steadfast in our commitment to superior product quality. Our production supervisor, with over 15 years in the bearing industry, ensures excellence in every process, driven by the ethos that quality is a continuous journey. Our technical backbone regularly engages in knowledge exchange with other units, constantly seeking to elevate customer satisfaction.
At our company, unparalleled quality and impeccable service are our promises to clients. Our high-quality products are designed to empower your business. We warmly welcome friends from around the globe to join us for mutually beneficial cooperation and shared growth.
We boast state-of-the-art equipment, advanced technology, and high-precision testers that significantly enhance processing accuracy. This ensures superior product quality, reduces production cycles, and fosters continuous innovation, earning the unwavering trust of our customers.
Dongsheng bearings are integral to a multitude of applications, including automobiles, motorcycles, water pumps, electric tools, air compressors, reducers, industrial motors, generators, textile machinery, agricultural machinery, transmission equipment, and machine tools.
Our bearings also find widespread use in household 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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