Discover the superior performance of our miniature ball bearings, including models MR52, MR63, MR83, MR74, MR84, MR104, MR85, MR95, MR105, MR115, MR106, MR126, MR117, MR137, MR128, and MR148. Designed for precision and reliability across a myriad of applications, these bearings are your go-to solution for demanding environments.
| 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 to meet your specifications, ensuring a perfect fit for your unique requirements.
- Flange Bearing-Available in a wide range of items to suit diverse industrial needs, ensuring seamless operation and reliability.
- Ball Bearing-Engineered to the highest standards with P6, P5 quality levels, and noise levels Z2, Z3, Z4. Enjoy swift delivery and unparalleled performance.
Ningbo Dongsheng Bearing Co., Ltd., established in 2013, is located in the dynamic Zhenhai District of Ningbo City. We specialize in the research, development, and production of high-quality micro bearings designed for a wide array of applications.
Equipped with state-of-the-art production facilities and cutting-edge bearing manufacturing technology, we strive for perfection with a scientific approach to quality. Our extensive product range includes 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 with inner diameters of 1-15mm and outer diameters less than 25mm. Adhering to stringent EU environmental standards, our products are ROHS certified and are widely exported to Hong Kong, Europe, America, South Korea, Japan, and beyond. These bearings are integral to household appliances, instruments, micro motors, medical devices, textile machinery, electric tools, high-end toys, fishing gear, model aircraft, and more. Amidst a competitive market and transparent pricing, we prioritize exceptional product quality to secure our market position. Our production supervisor, with over 15 years of expertise in the bearing industry, continually pursues excellence, adopting the ethos, 'there is no best, but better.' We regularly engage in technical exchanges to further enhance our capabilities, ensuring we consistently deliver superior solutions to our valued customers.
Our unwavering commitment to high quality and exemplary service underpins our customer relationships. High-quality products from Ningbo Dongsheng Bearing Factory empower our clients to excel in their businesses. We warmly invite friends from around the globe to visit and collaborate with us for mutual growth and success.
Our advanced equipment, cutting-edge technology, and high-precision testing instruments significantly enhance processing accuracy and product quality, while shortening production cycles. Through continuous technological innovation, we consistently elevate product quality, earning steadfast trust from our customers.
Dongsheng bearings are essential components in automotive, motorcycle, water pump, electric tool, air compressor, reducer, industrial motor, generator, textile machinery, agricultural machinery, transmission equipment, and machine tool applications, offering unmatched reliability and performance.
Dongsheng bearings also enhance the functionality and longevity of home appliances and office equipment, including air conditioners, washing machines, vacuum cleaners, massagers, sewing machines, range hoods, microwave ovens, copiers, and more, ensuring smooth and efficient operation.
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