Our range of precision-engineered miniature ball bearings includes models like MR52, MR63, MR83, MR74, MR84, MR104, MR85, MR95, MR105, MR115, MR106, MR126, MR117, MR137, MR128, and MR148. Each bearing is meticulously crafted to meet the highest standards of performance and durability.
| 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 - Customizable to suit any size specifications you require.
- Flange Bearings - Available in a wide variety of specifications to meet your needs.
- Ball Bearings - We offer P6 and P5 quality grades, with noise levels Z2, Z3, and Z4. Enjoy fast delivery and unparalleled reliability.
Ningbo Dongsheng Bearing Co., Ltd. was established in 2013 in Zhenhai District, Ningbo City. We specialize in the research, development, and production of micro bearings, earning a reputation for excellence and innovation.
Our state-of-the-art production facilities and advanced manufacturing technologies ensure top-notch quality. Our main products include metric and imperial 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 of less than 25mm. All our products are EU environmental protection certified and have passed ROHS testing. Widely exported to Hong Kong, Europe, America, South Korea, Japan, and other regions, our bearings are integral in household appliances, instruments, micro motors, medical devices, textile machinery, electric tools, high-end toys, fishing gear, model aircraft, and more. In an increasingly competitive market, we focus on superior quality to secure our place. Our production supervisor, with over 15 years of industry experience, ensures that our philosophy of 'there is no best, but better' is upheld. We continuously send our technical leaders to other units for learning and improvement, aiming to deliver the utmost satisfaction to our customers.
At Ningbo Dongsheng, we prioritize high quality and exceptional service. Our premium products empower our clients to achieve greater business success. We warmly welcome friends and partners from around the globe to visit and collaborate with us, fostering mutual growth and development.
Our cutting-edge equipment, advanced technology, and high-precision testing apparatus significantly enhance our processing accuracy, ensure top-quality products, and shorten production cycles. Through continuous technological innovation, we consistently improve product quality, earning the trust and confidence of our customers.
Dongsheng bearings are extensively used in automobiles, motorcycles, water pumps, electric tools, air compressors, reducers, industrial motors, generators, textile machinery, agricultural machinery, transmission equipment, and machine tools.
Furthermore, Dongsheng bearings find broad applications 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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