Discover our comprehensive range of miniature ball bearings, meticulously designed for precision and reliability. Our offerings include MR52, MR63, MR83, MR74, MR84, MR104, MR85, MR95, MR105, MR115, MR106, MR126, MR117, MR137, MR128, MR148, ensuring versatile applications for your diverse needs.
| 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 available, tailored to meet your specific requirements.
- Flange Bearings-accepting a wide range of items to cater to your exact specifications.
- Ball Bearings-premium quality meeting P6 and P5 standards, with noise levels Z2, Z3, and Z4. Quick delivery ensured.
Ningbo Dongsheng Bearing Co., Ltd, established in 2013, is strategically located in Zhenhai District, Ningbo City. We specialize in the research, development, and production of a diverse array of micro bearings, capitalizing on our rich expertise and cutting-edge technology.
Our company boasts state-of-the-art production equipment and advanced bearing manufacturing technology. We are committed to unparalleled quality with a scientific approach. Our main product line includes both metric and English deep groove ball bearings, stainless steel bearings, various flange series bearings, and more. We offer precision, thin-wall, low-noise, non-standard bearings, and pulley series, with inner diameters ranging from 1-15mm and outer diameters of less than 25mm. Certified by EU environmental standards and ROHS, our products are exported globally, including to Hong Kong, Europe, America, South Korea, and Japan. They are integral to household appliances, instruments, micro motors, medical devices, textile machinery, electric tools, high-end toys, fishing gear, model aircraft, and more. In a transparent and highly competitive market, we focus on quality to secure our market position. Our production Supervisor, with over 15 years of industry experience, adheres to the principle: 'There is no best, only better.' We continuously seek knowledge and improvement to offer the best to our customers.
Dedicated to delivering high quality and exceptional service, our company aims to empower our clients' businesses. We warmly invite friends and business partners from around the globe to visit us and explore cooperation opportunities for mutual growth and success.
With top-tier equipment, advanced technologies, and high-precision testing, we significantly enhance processing accuracy and product quality while reducing production cycles. Through continuous technological innovation, we strive to improve product quality, gaining the trust and confidence of our customers.
Dongsheng bearings are extensively used in various sectors 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 applications in household appliances 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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