Self lube bronze buhsings enjoy significantly longer maintenance and replacement intervals, greater machine uptime, higher throughput, and cleaner operation. They also save money by eliminating the need for expensive lubrication systems and lubricants.

Self-lubricating bushings can provide several benefits for end-users

• There is no need for oil holes and grooves in the design of the bearings. This eliminates the cost of machining the holes and grooves in the bearings.
• Self-lubrication eliminates the need for an extra oiling system.
• They reduce the machinery running cost since it has fewer maintenance problems.
• Self lube bearings are mostly maintenance free reducing the cost of preventive and routine maintenance.
• Their mechanical design is simple to manufacture, with thin wall thickness; higher load capacity, and excellent wear resistance, making them more economical.
• They are environmentally friendly as they do not need extra oil and waste management issues.

Cast bronze bushings are recommended for moderate to heavy loads, shocks, and temperatures. Made from C93200 SAE 660 bearing bronze bar stock. This material is impact, wear, and corrosion resistant and has excellent friction resistance. It also has excellent machinability, which means that high-quality surface finishes can be achieved.
This combination of mechanical properties creates a tough and durable bushing that will meet or exceed the fit and life of all other bushings.

Casting Bronze Bushings Styles

Casting Bronze Bushings to have 5 styles, There are Grooved Cast Bronze Bushings, cast plain bearing, Flanged Cast bronze bearings, thrust washers, and large diameter bronze bearings.

Oil-impregnated bronze bushings are characterized by their ability to self-lubricate. This effect is possible because of the powder metallurgy process:

• Bronze powder is gravity fed into a die set which is the desired bushing size. The powder is then pressed to connect the powder particles.
• The powder particles in the part are then bonded together in a furnace. The furnace temperature is just high enough to bond the particles without melting the metal.

• This sintering procedure is the key to oil impregnation. Sintering, by nature, decreases the porosity of the product as it bonds the powder particles together, but it’s possible to control the degree to which this happens.
• For oil-impregnated bronze bushings, the final porosity is maintained at around 25%, meaning that there are still tiny, interconnected capillaries woven throughout the material.

• To finish the manufacturing process the bushing is then pressed through a calibration set of tools to the required tolerances. The bushing is then vacuum impregnated which forces oil into the interconnected porosity.

Graphite Self Lube Bushings– This product is a cast bronze bushing that has been milled and plugged with graphite plugs. The graphite acts as the lubricator. These are used in applications where the properties of the oil-impregnated bushing would not suffice. Examples of these are high-temperature applications or applications with a heavy load-bearing requirement.

Graphite bronze bushing’s surface should always be separated by a film of lubricant. With Graphite Plugged Bronze Bushings no form of supplementary lubrication is required.

A film of solid lubricant is transferred unto the shaft as it starts to run. The self-lubricating features allow the graphite self lube bearings to be used where oiling is difficult, expensive to implement, and where grease/oil cannot be used. Excellent lubrication is achieved even under high loads at low speeds.