Discover our extensive range of precision-engineered miniature ball bearings: MR52, MR63, MR83, MR74, MR84, MR104, MR85, MR95, MR105, MR115, MR106, MR126, MR117, MR137, MR128, MR148. Crafted for high performance and longevity.
| 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 - Tailored to meet your specific needs.
- Flange Bearings - A wide selection of items available for all your requirements.
- Premium Ball Bearings - Exceptional quality P6, P5 grades, noise levels Z2, Z3, Z4, and rapid delivery times.
Established in 2013, Ningbo Dongsheng Bearing Co., Ltd is located in Zhenhai District, Ningbo City. We specialize in the research, development, and production of high-quality micro bearings.
Equipped with modern production facilities and advanced bearing manufacturing technology, we are committed to excellence with a scientific approach to quality. Our comprehensive product range includes 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 of less than 25mm. Certified with EU environmental protection and ROHS, our products are exported globally to regions like Hong Kong, Europe, America, South Korea, and Japan. They are widely used in household appliances, instruments, micro motors, medical devices, textile machinery, electric tools, high-end toys, fishing gear, model aircraft, and more. In a competitive market, we prioritize product quality to secure our market position. With over 15 years of experience, our production supervisor ensures the highest standards: 'There is no best, but better.' Our technical team is continually learning and improving to provide optimal solutions for our customers.
Dedicated to delivering high-quality products and exceptional service, we aim to support the business success of our clients. We welcome friends from around the globe to visit and collaborate with us for mutual growth and development.
Leveraging state-of-the-art equipment, advanced technology, and high-precision testing, we significantly enhance processing accuracy, ensure product quality, and reduce production cycles. Through continuous technological innovation, we strive to exceed customer expectations and build trust.
Dongsheng bearings are extensively utilized in various industries including automotive, motorcycles, water pumps, electric tools, air compressors, reducers, industrial motors, generators, textile machinery, agricultural machinery, transmission equipment, and machine tools.
Our bearings are equally prominent in home appliances and office equipment, such as air conditioners, washing machines, vacuum cleaners, massagers, sewing machines, range hoods, microwave ovens, copiers, and more.
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