The MR series of miniature ball bearings, including models MR52, MR63, MR83, MR74, MR84, MR104, MR85, MR95, MR105, MR115, MR106, MR126, MR117, MR137, MR128, and MR148, represent pinnacle precision engineering tailored for diverse 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 |
- Bushing---Customized sizes accepted for bespoke engineering solutions.
- Flange Bearing---A wide variety of items readily available.
- Ball Bearing---Offering superior quality in P6 and P5 grades, with noise levels Z2, Z3, and Z4, ensuring swift delivery.
Established in 2013, Ningbo Zhenhai Dongsheng Bearing Factory is located in the Zhenhai District of Ningbo City. We specialize in the R&D and production of a diverse range of micro bearings.
Equipped with modern production facilities and advanced bearing manufacturing technologies, our company adheres to a scientific approach to achieve outstanding quality. 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 of less than 25mm. Our products meet EU environmental protection standards and come with ROHS test reports. We export globally to regions like Hong Kong, Europe, America, South Korea, and Japan. Widely used in household appliances, instruments, micro motors, medical devices, textile machinery, electric tools, high-end toys, fishing gear, and model aircraft, our products cater to a rapidly evolving market economy. Our factory prioritizes quality to maintain market competitiveness. Our production supervisor, with over 15 years of industry experience, ensures that our products continually improve. Through ongoing technical visits and learning, we strive to offer our customers top-notch service and satisfaction.
Our company is dedicated to delivering high-quality products and exceptional service. We aim to support our clients' businesses by providing superior products. We warmly welcome friends and potential partners from around the world to visit, contact us, and explore collaborative opportunities for mutual growth.
With state-of-the-art equipment, advanced technology, and high-precision testers, we significantly enhance processing accuracy, ensuring product quality and reducing production cycles. Through continuous technological innovation, we aim to improve product quality and earn our customers' trust.
Dongsheng Bearing finds extensive applications across various industries, including 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 integral to home appliances and office equipment such as air conditioners, washing machines, vacuum cleaners, massagers, sewing machines, range hoods, microwave ovens, and copiers.
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