Our range of miniature ball bearings includes the following 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 --- We accept customized sizes to meet your unique requirements.
- Flange Bearing --- A wide variety of items are available and accepted.
- Ball Bearing --- Premier quality bearings available in P6, P5, with noise levels Z2, Z3, and Z4, ensuring quick delivery.
Ningbo Dongsheng Bearing Co., Ltd., officially established in 2013, is nestled in the Zhenhai District of Ningbo City. We are dedicated to the research, development, and production of a diverse array of micro bearings.
Our company is equipped with state-of-the-art production equipment and advanced bearing manufacturing technology. We adopt a scientific approach to quality, striving for excellence in every product. Our main offerings include 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. These bearings have an inner diameter of 1-15mm and an outer diameter of less than 25mm. All our products have passed the EU environmental protection certification and have ROHS test reports. They are exported to numerous regions including Hong Kong, Europe, America, South Korea, and Japan. Our products find extensive applications in household appliances, instruments, micro motors, medical devices, textile machinery, electric tools, high-end toys, fishing gear, model aircraft, and more. As the market economy rapidly evolves and the internet develops, product prices have become more transparent and market competition has intensified. Our factory prioritizes product quality to secure a competitive position. Our production supervisor, with over 15 years of experience in the bearing industry, is adept in the bearing production process and consistently emphasizes product quality, aspiring for continuous improvement. We regularly organize technical visits to learn and enhance our processes, aiming to provide customers with the utmost satisfaction.
Our company is committed to delivering high-quality products and the best service to our clients. Superior quality products empower our clients to thrive in their businesses. We warmly welcome friends from around the globe to visit and engage with us for mutually beneficial cooperation and development.
We boast excellent equipment and advanced technology, complemented by high-precision testing devices. This significantly enhances processing accuracy, ensures product quality, and shortens production cycles. Through continuous technological innovation, we consistently 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, and machine tools.
Dongsheng bearings are also prominent in 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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