Explore our wide range of meticulously crafted miniature ball bearings including MR52, MR63, MR83, MR74, MR84, MR104, MR85, MR95, MR105, MR115, MR106, MR126, MR117, MR137, MR128, and MR148. These precision-designed components are engineered for excellence.
| 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-Tailored to meet your specific requirements with customizable sizes available.
- Flange Bearing-A comprehensive range of items offered to suit diverse applications.
- Ball Bearing-Impeccable quality in P6, P5 grades with noise levels ranging from Z2 to Z4, coupled with swift delivery times.
Founded in 2013, Ningbo Dongsheng Bearing Co., Ltd., located in the Zhenhai District of Ningbo City, excels in the research, development, and production of an array of micro bearings. Our commitment to innovation ensures we stay at the forefront of the industry.
Our state-of-the-art production facilities and advanced bearing manufacturing technologies allow us to achieve unparalleled quality. Specializing in metric and English deep groove ball bearings, stainless steel bearings, flange series, 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 under 25mm. Certified by the EU for environmental protection and compliant with ROHS standards, our products are exported globally including to Hong Kong, Europe, America, South Korea, and Japan. Widely applied in household appliances, instruments, micro motors, medical devices, textile machinery, electric tools, high-end toys, fishing gear, and model aircraft. As market competition intensifies and prices become more transparent, we emphasize superior product quality to secure our market position. With over 15 years of industry expertise, our production supervisor ensures every bearing meets our high standards of excellence. We continually seek to improve through technical visits and learning, striving to provide our customers with the best possible solutions.
Dedicated to delivering high-quality products and exceptional service, we at Ningbo Dongsheng Bearing Factory invite friends from around the world to visit us. Together, let's explore opportunities for collaboration and mutual growth.
Equipped with cutting-edge machinery, advanced technology, and high-precision testing equipment, we significantly enhance processing accuracy, ensure superior product quality, shorten production cycles, and continually innovate to meet customer expectations.
Our bearings are integral to the performance of 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 essential in household 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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