MG-090 is a high-performance bronze wrapped bearing featuring specially designed oil pockets on its running surface. It is manufactured from a high-density bronze alloy strip with special composition, which is subsequently rolled and calibrated into cylindrical or flanged bushings. The surface is rolled with diamond-shaped lubrication pockets or hemispherical oil indents, which retain grease to provide continuous lubrication during operation. This design offers high density, high load capacity, excellent wear resistance, and extended service life. MG-090 bearings are widely used in hoist machinery, building machinery, machine tool industry, mining machinery, and other heavy-duty equipment where reliable plain bearing performance is required.
◆ Features
● High Density Bronze Alloy Construction – Manufactured from high-density phosphor bronze (CuSn8P) strip with special composition, providing superior mechanical strength and structural integrity.
● Oil Pocket Design for Lubrication Retention – The running surface features diamond-shaped or hemispherical oil indents that retain grease, reducing friction and wear by maintaining an oil film between the bearing and the shaft.
● High Load Carrying Capacity – Pressure resistance strength up to 470 N/mm, capable of withstanding heavy static and dynamic loads in demanding applications.
● Excellent Wear Resistance – The combination of high-density bronze alloy and oil pocket lubrication ensures long service life and reduced maintenance frequency.
● ISO 3547 Compliant – Manufactured according to ISO 3547 standard for wrapped plain bearings, ensuring dimensional accuracy and consistent quality[reference:0].
● Suitable for Contaminated Environments – Ideal for applications with high levels of contamination. For heavily contaminated operating conditions, sealing is recommended to protect both the bearing and the lubricant[reference:1][reference:2].
◆ Material Structure & Composition
The MG-090 bearing is made entirely from phosphor bronze (CuSn8) strip, which is characterized by the purity of the alloy with only very low levels of impurities[reference:3]. The strip is subsequently wrapped and calibrated to precise dimensions. The surface is rolled with diamond-shaped or hemispherical oil pockets that serve as reservoirs for grease lubrication.
1. Diamond-shaped or hemispherical oil pockets (rolled into surface) – retain grease for continuous lubrication.
2. High-density bronze alloy – CuSn8P phosphor bronze, providing high load capacity and wear resistance.
3. Wrapped cylindrical or flanged form – produced from rolled bronze strip, calibrated for precise tolerances.
◆ Technical Data
| Technical Data | |
| Density | 8.9 g/cm³ |
| Pressure resistance strength | 470 N/mm |
| Hardness | 90~120 HB |
| Thermal conductivity | 60 W/(m·K) |
| Linear expansion coefficient | 18.5 × 10⁻⁶ /K |
| Elongation | 0.55% |
| Alloy material | CuSn8P (CuSn6.5P optional) |
◆ Chemical Composition
| Element | Cu | Sn | P |
| CuSn8 | Rest | 7.0~9.0% | 0.03~0.45% |
◆ Application Areas
MG-090 is widely used in heavy machinery and industrial equipment requiring reliable plain bearing performance, including:
● Hoist machinery and lifting equipment
● Building machinery and construction equipment
● Machine tool industry and precision machinery
● Mining machinery and material handling equipment
● Heavy-duty industrial applications with high contamination levels
● Agricultural machinery and off-road vehicles
