Discover precision in miniature ball bearings with our extensive range, including models MR52, MR63, MR83, MR74, MR84, MR104, MR85, MR95, MR105, MR115, MR106, MR126, MR117, MR137, MR128, and MR148. Crafted with meticulous attention to detail, these bearings deliver unparalleled 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, designed to meet unique specifications and applications.
- Flange Bearing-an extensive selection of items available to suit various needs and applications.
- Ball Bearing-top-notch quality levels of P6 and P5, with noise levels rated Z2, Z3, and Z4. Enjoy prompt delivery and superior performance.
Established in 2013, Ningbo Dongsheng Bearing Co., Ltd. is a distinguished name located in Zhenhai District, Ningbo City, specializing in the R&D and production of a diverse array of micro bearings. With years of industry experience and commitment to excellence, our advanced facilities and innovative technologies ensure top-tier quality.
Our company boasts state-of-the-art production equipment and advanced bearing manufacturing techniques, embodying a scientific approach to achieve perfection. We specialize in 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-ranging from 1mm to 15mm inner diameters and up to 25mm outer diameters. Certified by EU environmental standards and ROHS compliant, our products are exported globally to regions including Hong Kong, Europe, America, South Korea, and Japan. Utilized in household appliances, instruments, micro motors, medical devices, textile machinery, electric tools, high-end toys, fishing gear, model aircraft, and more, we strive for excellence in quality amidst vigorous market competition. Our production supervisor, with over 15 years in the bearing industry, ensures our commitment to continuous improvement. We regularly organize technical visits to enhance our processes, aiming to provide customers with exceptional satisfaction.
Our commitment to high quality and exceptional service sets us apart. We offer our clients premium products that enhance their business operations. We welcome friends worldwide to visit us for cooperation and mutual growth.
Equipped with advanced machinery, cutting-edge technology, and high-precision testers, we significantly enhance processing accuracy, ensure superior product quality, and reduce production cycles. Our continuous technological innovation secures the trust of our customers.
Dongsheng bearings are integral to various industries, 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 play a vital role in 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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