Discover the range of our high-precision miniature ball bearings: MR52, MR63, MR83, MR74, MR84, MR104, MR85, MR95, MR105, MR115, MR106, MR126, MR117, MR137, MR128, and MR148. Each meticulously crafted to meet the highest standards of quality and performance.
| 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 to meet your specific needs and applications.
- Flange bearing----Accepting a wide range of items to cater to diverse industrial requirements.
- Ball bearing-----Experience unrivaled quality with our P6, P5 grade bearings. Noise levels Z2, Z3, Z4 ensure quieter operation and our quick delivery guarantees you get what you need, when you need it.
Established in 2013, Ningbo Zhenhai Dongsheng Bearing Factory stands tall in Zhenhai District, Ningbo City. We specialize in the innovation, development, and production of various micro bearings, setting industry standards with our expertise.
Equipped with state-of-the-art production facilities and cutting-edge bearing manufacturing technology, we at Ningbo Zhenhai Dongsheng Bearing Factory pursue excellence with scientific precision. Our diverse product range includes metric and English deep groove ball bearings, stainless steel bearings, flange bearings, plane thrust ball bearings, precision thin-wall, low-noise bearings, non-standard bearings, and pulley series. With inner diameters from 1-15mm and outer diameters under 25mm, our products are EU environmental certification compliant and ROHS tested. Exported globally to regions including Hong Kong, Europe, America, South Korea, and Japan, our bearings find extensive application in household appliances, instruments, micro motors, medical devices, textile machinery, electric tools, high-end toys, fishing gear, and model aircraft. In today's competitive and transparent market, we stand out by prioritizing quality. Our production supervisor, with over 15 years in the bearing industry, epitomizes our philosophy: 'there is no best, but better'. We continually enhance our skills through learning and innovation, aiming to meet and exceed customer expectations.
At Ningbo Zhenhai Dongsheng Bearing Factory, we emphasize superior quality and exceptional service. Our high-quality products empower our clients to achieve greater business success. We warmly invite friends from around the globe to visit and explore opportunities for mutual growth and collaboration.
Our state-of-the-art equipment, advanced technology, and high-precision testers significantly enhance processing accuracy and ensure superior product quality. Technological innovations enable us to shorten production cycles and continually improve our offerings, earning the unwavering trust of our customers.
Dongsheng bearings are integral to a wide array of industries including automotive, motorcycle, water pump, electric tool, air compressor, reducer, industrial motor, generator, textile machinery, agricultural machinery, transmission equipment, and machine tools.
Our bearings are also pivotal in enhancing home appliances and office equipment like air conditioners, washing machines, vacuum cleaners, massagers, sewing machines, range hoods, microwave ovens, copiers, and more.
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