Product Overview
Machined cast bronze bearings offer technically and economically favorable bearing solutions for demanding industrial applications. The MG-5 Solid Bronze Turned Bushes deliver high load capability, low weight, and excellent corrosion resistance–a combination that ensures reliable performance and extended service life under harsh operating conditions .
As a precision-engineered product from Marginal Bearing, MG-5 bushes are machined from high-quality cast bronze, achieving significantly tighter dimensional tolerances compared to conventional wrapped bronze bushes. This precision translates to easier installation, improved fit accuracy, and reduced risk of premature wear in your equipment .
Why Choose MG-5 – A Procurement Perspective
Total Cost of Ownership – Superior wear resistance and durability reduce replacement frequency and downtime, delivering long-term cost savings that extend far beyond the initial purchase price.
Supply Reliability – Standard and non-standard sizes are readily available, ensuring consistent supply for both routine maintenance programs and new project implementations.
Material Versatility – Multiple bronze alloy options allow you to select the optimal material for your specific application, avoiding both over-specification and under-performance.
Quality Consistency – The machined production process ensures uniform quality, tight tolerances, and predictable performance batch after batch, giving you confidence in every delivery.
Lead Time – Flexible manufacturing capabilities enable rapid response to both standard stock orders and custom non-standard requirements, keeping your production on schedule.
Technical Specifications – MG-5
Technical Data | ||||||
MG-5 | MG-5S1 | MG-5S2 | MG-5S3 | MG-5S4 | MG-5S5 | |
Material designation | CuZn25Al6Mn4Fe3 | CuSn5Pb5Zn5 | CuAl10Ni5Fe5 | CuSn12 | CuSn10Pb10 | CuZn25Al6Mn4Fe3 |
Density | 8 | 8.9 | 7.8 | 8.9 | 8.9 | 8 |
Yield Strength N/mm2 | ＞450 | ＞90 | ＞260 | ＞150 | ＞100 | ＞450 |
Tensile Strength N/mm2 | ＞750 | ＞200 | ＞600 | ＞260 | ＞210 | ＞800 |
Elongation % | ＞12 | ＞15 | ＞10 | ＞8 | ＞8 | ＞8 |
Hardness HB | ＞210 | ＞70 | ＞150 | ＞95 | ＞75 | ＞250 |
Key Performance Characteristics:
- Excellent mechanical strength for heavy-load applications
- Good corrosion resistance suitable for demanding environments
- High wear resistance for extended service intervals
- Suitable for low-speed, high-load oscillating or rotating movements
Material Options Comparison
The MG series offers a range of bronze alloys, allowing you to match material properties to your specific operating conditions:
MG-5 (CuZn25Al6Mn4Fe3) – High strength with excellent wear resistance, ideal for heavy-duty applications, construction machinery, and hydraulic components.
MG-5S1 (CuSn5Pb5Zn5) – A general-purpose tin bronze with good all-round performance and moderate anti-friction properties, suitable for a wide range of moderate-load applications.
MG-5S2 (CuAl10Ni5Fe5) – Nickel-aluminum bronze featuring outstanding seawater corrosion resistance, perfect for marine engineering, chemical equipment, and offshore platforms.
MG-5S3 (CuSn12) – High-tin bronze with excellent wear and anti-seizure properties, commonly specified for high-load bearing applications and heavy machinery.
MG-5S4 (CuSn10Pb10) – Leaded tin bronze with good self-lubrication and high machinability, well-suited for high-speed, light-load applications.
MG-5S5 (CuZn25Al6Mn4Fe3) – An ultra-high-strength aluminum bronze variant for structural components subjected to extremely high static loads.
Lubrication Feature
MG-5 bushes are available with factory-machined lubrication grooves and oil holes, ensuring optimal lubricant distribution across the bearing surface. This design feature:
- Reduces friction and operating temperature
- Extends both bearing and mating shaft life
- Minimizes maintenance frequency
- Improves reliability in boundary lubrication conditions
Available Sizes
We offer flexible sizing options to accommodate diverse design requirements :
Standard Sizes – Cylindrical bearings, flange bearings, thrust washers, and plates are available from stock for immediate delivery.
Non-Standard Sizes – Custom dimensions for cylindrical bearings, flange bearings, thrust washers, and plates can be manufactured according to customer drawings or technical specifications. Our flexible production line ensures competitive lead times for all custom orders.
Application Industries
MG-5 Solid Bronze Turned Bushes are trusted across diverse industrial sectors:
Food Industry – Corrosion-resistant and suitable for washdown environments, meeting hygiene and durability requirements.
Port Machinery – High load capacity and durability for crane sheaves, ship-to-shore equipment, and heavy handling systems.
Water Industry – Excellent corrosion resistance in water treatment plants, pumping stations, and desalination facilities.
Chemical Industry – Resistant to aggressive chemicals and harsh processing conditions, ensuring reliable operation in corrosive environments.
New Energy Industry – Reliable performance in wind turbines, solar tracking systems, and other renewable energy equipment requiring long-term dependability.
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