Discover the precision and reliability of our miniature ball bearings, including models MR52, MR63, MR83, MR74, MR84, MR104, MR85, MR95, MR105, MR115, MR106, MR126, MR117, MR137, MR128, and MR148. Each bearing is crafted to deliver optimal performance for your specific 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 to meet your exact specifications.
- Flange Bearing-offering a wide range of items to suit various applications.
- Ball Bearing-highest quality in P6, P5 grades, with noise levels Z2, Z3, Z4. Quick delivery guaranteed.
Ningbo Dongsheng Bearing Co., Ltd was officially established in 2013 in Zhenhai District, Ningbo City. We specialize in the research, development, and production of a wide range of micro bearings.
Our company boasts state-of-the-art production equipment and cutting-edge bearing manufacturing technology. We are committed to achieving excellence with a scientific approach to quality. Our primary offerings include metric and English deep groove ball bearings, stainless steel bearings, flange series bearings, plane thrust ball bearings, precision thin-wall, low-noise bearings, non-standard bearings, and pulley series with inner diameters of 1-15mm and outer diameters of less than 25mm. Our products have passed EU environmental protection certification and ROHS test reports and are exported to Hong Kong, Europe, America, South Korea, Japan, and other regions. Widely used in household appliances, instruments, micro motors, medical devices, textile machinery, electric tools, high-end toys, fishing gear, model aircraft, and more, our products stand out in a competitive market by focusing on quality. Our production supervisor, with over 15 years of industry experience, emphasizes that 'there is no best, but better' in product quality. We routinely send our technical staff to learn from other units, aiming to provide ever-improving satisfaction to our customers.
Our company is dedicated to providing high-quality products and exceptional service to our clients. We believe that superior products will significantly benefit our clients' businesses. We welcome friends from all over the world to visit and collaborate with us for mutual growth and success.
Equipped with excellent machinery, advanced technology, and high-precision testers, we significantly enhance processing accuracy and product quality while reducing production cycles. Through continuous technological innovation, we strive to improve product quality and earn our customers' trust.
Dongsheng bearings find extensive applications in the automotive, motorcycle, water pump, electric tool, air compressor, reducer, industrial motor, generator, textile machinery, agricultural machinery, transmission equipment, and machine tool industries.
Dongsheng bearings are also widely integrated into home appliances and office equipment, including air conditioners, washing machines, vacuum cleaners, massagers, sewing machines, range hoods, microwave ovens, copiers, and more.
){kind=link}