Discover our precision-engineered miniature ball bearings including MR52, MR63, MR83, MR74, MR84, MR104, MR85, MR95, MR105, MR115, MR106, MR126, MR117, MR137, MR128, and MR148. These bearings are meticulously crafted for superior performance across a variety of applications.
| 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---Tailored to Fit: Customized Sizes Available
- Flange Bearing----A Wide Selection of High-Quality Items Available
- Ball Bearing-----Superior Quality with P6, P5 Grades, Noise Levels Z2, Z3, Z4, and Rapid 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 a broad spectrum of micro bearings.
Our company boasts state-of-the-art production equipment and cutting-edge bearing manufacturing technology, committed to achieving excellence 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 of less than 25mm. Our products are EU environmental protection certified and have passed ROHS testing. Export destinations include Hong Kong, Europe, America, South Korea, Japan, and more. They are widely employed in household appliances, instruments, micro motors, medical devices, textile machinery, electric tools, high-end toys, fishing gear, model aircraft, and beyond. Amid the swiftly evolving market economy and increasing internet transparency, we remain steadfast in prioritizing product quality to carve a niche in the competitive market. Our factory's Production Supervisor, with over 15 years of experience in the bearing industry, champions the ethos that 'there is no best, but better'. We continually organize technical teams to visit and learn from other units, striving to provide our customers with the most satisfactory solutions.
Our company is dedicated to offering high-quality products and exceptional service to our clients. Premium products empower our clients to thrive in their businesses. We warmly welcome friends from around the globe to visit and contact us for collaboration and mutual growth.
Equipped with state-of-the-art equipment, cutting-edge technologies, and high-precision testing tools, we significantly enhance processing accuracy, ensuring superior product quality while shortening production cycles. Continuous technological innovation allows us to improve product quality and earn customer trust.
Dongsheng bearings are extensively used 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 prevalent 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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