Discover the range of our precision-engineered miniature ball bearings: MR52, MR63, MR83, MR74, MR84, MR104, MR85, MR95, MR105, MR115, MR106, MR126, MR117, MR137, MR128, MR148. Each bearing is crafted for optimal performance and reliability.
| 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: Custom sizes are available to meet your specific requirements, ensuring a perfect fit every time.
- Flange Bearing: A wide variety of items are available to suit various applications, ensuring versatility and reliability.
- Ball Bearing: We offer premium quality P6 and P5 ball bearings with noise levels Z2, Z3, and Z4, ensuring quiet operation and fast delivery.
Established in 2013, Ningbo Dongsheng Bearing Co., Ltd. is located in the dynamic Zhenhai District of Ningbo City. We specialize in the innovative research, development, and production of an extensive range of micro bearings, designed to meet the highest standards.
Our cutting-edge production facilities and advanced bearing manufacturing technologies uphold our commitment to superior 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, we guarantee precision with an inner diameter of 1-15mm and an outer diameter of less than 25mm. Certified by the EU for environmental protection and backed by ROHS test reports, our products are exported worldwide, including Hong Kong, Europe, America, South Korea, and Japan. They serve a wide array of industries, from household appliances and micro motors to medical devices and textile machinery. As market competition intensifies, we prioritize quality, leveraging our 15+ years of expertise to continually enhance our offerings. Our dedicated team continuously seeks improvement by learning from industry leaders to provide unparalleled customer satisfaction.
At Ningbo Dongsheng Bearing Factory, we are dedicated to providing unparalleled quality and exceptional service. We invite friends and partners from around the globe to visit, connect, and collaborate with us for mutual growth and success.
Our state-of-the-art equipment, advanced technologies, and high-precision testing tools significantly enhance processing accuracy, ensuring superior product quality. We streamline production cycles and continuously innovate to consistently improve our products, earning the unwavering trust of our customers.
Dongsheng bearings are trusted components in a wide range of applications, including automobiles, motorcycles, water pumps, electric tools, air compressors, reducers, industrial motors, generators, textile machinery, agricultural machinery, transmission equipment, and machine tools.
Dongsheng bearings are integral to various home appliances and office equipment, such as air conditioners, washing machines, vacuum cleaners, massagers, sewing machines, range hoods, microwave ovens, and copiers, ensuring reliability and performance.
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