Discover the excellence of our miniature ball bearings: MR52, MR63, MR83, MR74, MR84, MR104, MR85, MR95, MR105, MR115, MR106, MR126, MR117, MR137, MR128, and MR148. Engineered for precision and performance.
| 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 accepted to meet your unique requirements.
- Flange Bearings-A wide range of items available to suit various applications.
- Ball Bearings-Superior P6, P5 quality with noise levels Z2, Z3, Z4, and swift delivery.
Ningbo Dongsheng Bearing Co., Ltd. was formally established in 2013, located in the Zhenhai District of Ningbo City. We specialize in the research, development, and production of various micro bearings.
Our company boasts state-of-the-art production equipment and advanced bearing manufacturing technology, ensuring quality through a scientific approach to achieve excellence. Our main product range includes 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 an inner diameter of 1-15mm and an outer diameter of less than 25mm. All our products have passed the EU environmental protection certification and possess ROHS test reports. We export to Hong Kong, Europe, America, South Korea, Japan, and beyond. Our bearings are extensively used in household appliances, instruments, micro motors, medical devices, textile machinery, electric tools, high-end toys, fishing gear, model aircraft, and more. Amidst the rapid evolution of the market economy and the increasing transparency of product prices, market competition has intensified. Our factory prioritizes product quality, striving to secure a market position through excellence. Our production supervisor brings over 15 years of experience in the bearing industry, showcasing expertise in the bearing production process and a commitment to continuous improvement: 'There is no best, but better.' We regularly organize visits and learning sessions for our technical team to enhance their skills, aiming to offer our customers the most satisfactory solutions.
Our company is dedicated to delivering high quality and exceptional service to our clients. Premium products empower our clients to excel in their business endeavors. We warmly welcome friends from around the globe to visit, contact us, and pursue cooperative growth together.
Equipped with excellent machinery, advanced technology, and high-precision testers, we significantly enhance processing accuracy, ensuring superior product quality while reducing production cycles. Through continual technological innovation, we consistently improve product quality, earning the trust of our customers.
Dongsheng bearings are extensively utilized in automobiles, motorcycles, water pumps, electric tools, air compressors, reducers, industrial motors, generators, textile machinery, agricultural machinery, transmission equipment, machine tools, and more.
Dongsheng bearings are also prominently used in home appliances and office equipment, including air conditioners, washing machines, vacuum cleaners, massagers, sewing machines, range hoods, microwave ovens, copiers, and beyond.
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