WELCOME TO Hongkong NKF Machinery Co.,Limited. English | Spanish

SANBURG INT'L LTD.supplies high quality "bronze bearings", bronze bushings, bronze wearplates, & bronze thrust washers to industry.  SANBURG INT'L LTD.has been the supplier of choice when custom "bronze bearings" , bushings, wear plates, & thrust washers are required.

Bronze bushings, bronze bearings and bronze continuous cast bars are manufactured by SANBURG BEARING INT'L LTD.Bronze is a copper alloy whose strength and lubricity make it well-suited for use as a bearing material. Manufacturers use bronze bearings to support spinning shafts in machinery. Hardened steel ball bearings and needle bearings have replaced bronze in applications that are subjected to high speed and heavy loading, but bronze bearings are still common in other applications because of their lower cost. 

self-lubricating plastic bushings are proven to deliver a longer service life than oil-impregnated sintered bronze bearings. They also offer cost savings up to forty per cent.Plastic bushings have already replaced sintered bronze bearings in thousands of applications from a wide range of different industries, including agricultural machinery, lawn mowers, medical equipment, food processing machinery, fitness equipment, pumps and valves, and many more.

Oil-impregnated sintered bronze bearings rely on a capillary action to create a lubricating oil film. Critically, however, high speed and rotational motion are both required to draw the oil out and maintain a full film of lubricant. Shaft oscillation, slow speed and intermittent use can all inhibit this process.self-lubricating plastic bushings do not suffer from any of the pitfalls of sintered bronze bearings, because they are injection molded from a blend of thermoplastic materials, embedded reinforcing fibers and solid lubricant. 

Another consideration, whether you are using plastic bushings or sintered bronze bearings, is which shaft to use. This is the most important factor after the bushing material has been determined. This is because it is in direct contact with the bearing and is affected by relative motion. A shaft that is rough is too abrasive and will separate small particles from the ina bearing surface during movement. On the other hand, very smooth shafts can lead to higher wear because not enough lubricant can be transferred onto the shaft to have an effect.