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Oil-free Bearing Material – Things to Know
Different metal substrates have an impact on bearing friction performance, service life, and the transfer of solid lubricants; proper selection of lubricants and metal substrates can greatly improve bearing performance.
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The benefits of oilless bronze bearings
Bronze Bearing Material on Friction Properties of Oilless Bearings
Tin Bronze & Vanadium-titanium Ductile Iron & Cast Iron
The friction coefficient of tin bronze is the lowest, followed by vanadium-titanium ductile iron, and the highest friction coefficient of ordinary cast iron is 0.2, and the changes of load and speed have little effect on them.
The tin bronze bearing has a wide range of load and speed, but the friction coefficient is stable. When the pv value of vanadium titanium ductile iron exceeds 700kg/cm, and the pv value of ordinary cast iron exceeds 600kg/cm, the temperature will rise rapidly, causing the bearing to become unstable.
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Instability behavior of Oil-free bearings
When the load is less than a certain value, the bearing works very stably, and the friction coefficient is basically unchanged. When the load exceeds a certain value, the bearing will become unstable, and the friction coefficient and temperature will increase rapidly. For tin bronze bearings, its instability is due to The worn copper powder accumulating. Under certain pressure and temperature, the copper powder will combine together to form a film covering the surface of the solid lubricant, so that the embedded solid lubricant cannot continue to play a lubricating role, resulting in lubrication failure.
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We offer high quality maintenance-free mould and die bronze oilless parts products acc. to international standards and standards for use in pressing tools, injection molds and general engineering.
Standard bronze bearing & bushes components for tool makers, mechanical engineering and mold makers.
We’re fully supply the mold and die parts for many applications such as mold making, engineering, packaging, heavy industry, Plastic packing machine and many more
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The benefits of oilless bronze bearings
C93200 SAE 660 Bearing Bronze Used for Light Applications
C93200 bearing bronze is easily machined into several different kinds of custom bronze components, as it is considered one of the standard bearing bronze alloys for light applications and is less dependent on lubrication.
SAE 660 bearing bronze’s resistance to corrosion makes it an option for marine parts, but CDA 954 aluminum bronze and CDA 955 nickel aluminum bronze are the strongest bronze alloys on the market for long-lasting non-corroding marine parts for ships and military-grade bronze components.
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High Leaded Tin Bronze
CDA 932 660 bearing bronze copper alloy is a high leaded tin bronze with trace amounts of iron, nickel, and antimony, making it an absolute workhorse of a bearing bronze alloy. It features excellent machining properties, good hardness, wear resistance, and great anti-friction qualities. CDA 932 is not subject to dezincification and has decent corrosion resistance to brine and seawater.
The benefits of oilless bronze bearings
Alloy 954 Aluminum Bronze (C95400)
There are many recommended uses for 954 aluminum bronze, some of which include weld guns, nuts, bearings, pump parts, bushings and gears. This all-purpose alloy resists wear and deformation under extreme loads and stress. Alloy 954 has a machinability rating of 60% along with high ductility and weld ability.
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C86300 Manganese Bronze SAE 430B
C86300 continuous cast manganese bronze is a high-strength, non-heat-treatable copper alloy intended for use in applications requiring a good combination of outstanding wear characteristics and high bearing strength for heavy loads and slow speeds. Typical applications include slow-speed heavy-duty load bearings, gears, cams, and hydraulic cylinder parts. Conforms to continuous cast specification ASTM B505.
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High-Performance Bronze Bearings Material solution
- The choice of metal material and embedded lubricant is an important factor affecting bearing performance
- The small friction coefficient and stable performance. The temperature rises slowly and the application range is wider
- For different metal materials, the order of friction coefficient is, ordinary cast iron is greater than vanadium-titanium ductile iron, greater than ordinary cast iron, greater than tin bronze
- The instability of the oil-free bearing is mainly caused by the gradual accumulation of “wear debris” worn down and covering the embedded lubricant. For soft metal materials, adhesive wear mainly occurs after destabilization, while for hard metal materials, abrasive wear occurs.
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