Discover our diverse range of precision-engineered miniature ball bearings, including MR52, MR63, MR83, MR74, MR84, MR104, MR85, MR95, MR105, MR115, MR106, MR126, MR117, MR137, MR128, and MR148. Each model is meticulously crafted to meet the highest standards of performance and durability.
| 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 |
- Customizable Bushing Sizes Available-Tailor-made to meet your exact specifications.
- Versatile Flange Bearings-A diverse selection of items available to suit various applications.
- Superior Quality Ball Bearings-P6 and P5 grades with noise levels Z2, Z3, and Z4, ensuring swift delivery and exceptional performance.
Founded in 2013 and located in Zhenhai District, Ningbo City, Ningbo Dongsheng Bearing Co., Ltd. specializes in the research, development, and production of a wide variety of micro bearings.
Equipped with modern production facilities and advanced bearing manufacturing technology, we adhere to a scientific approach for achieving exceptional quality. Our main product range includes metric and English deep groove ball bearings, stainless steel bearings, flange series bearings, plane thrust ball bearings, and precision thin-wall, low-noise bearings. We also offer non-standard bearings and pulley series with an inner diameter of 1-15mm and an outer diameter of less than 25mm. Certified with EU environmental protection and ROHS test reports, our products are exported to markets in Hong Kong, Europe, America, South Korea, Japan, among others. Widely used across various industries including household appliances, instruments, micro motors, medical devices, textile machinery, electric tools, high-end toys, fishing gear, and model aircraft, our commitment to quality ensures a competitive edge in an increasingly transparent market. Our production supervisor, boasting over 15 years of industry experience, embodies the philosophy: 'there is no best, but better.' By fostering continual learning and technical visits, we strive to deliver ever-improving product quality and customer satisfaction.
Committed to delivering high-quality products and exceptional service, we empower our clients to achieve greater business success. We warmly invite friends from around the globe to visit and collaborate with us for mutual growth and development.
Our state-of-the-art equipment, cutting-edge technology, and high-precision testing apparatus significantly enhance processing accuracy, ensuring superior product quality and reduced production cycles. Through continuous technological innovation, we earn and maintain the trust of our valued customers.
Dongsheng bearings are integral to the functionality of automobiles, motorcycles, water pumps, electric tools, air compressors, reducers, industrial motors, generators, textile machinery, agricultural machinery, transmission equipment, and machine tools.
Dongsheng bearings also find extensive use in household appliances and office equipment, including air conditioners, washing machines, vacuum cleaners, massagers, sewing machines, range hoods, microwave ovens, and copiers.
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