Centrifugal Cast Bronze Bushing for Heavy Equipment

Centrifugal cast bronze bushings are used where a shaft rotates or slides under load and the bearing surface must resist wear, heat and shock. In mining and heavy equipment, these bushings sit in crushers, pumps, gearboxes and pivot points, so the casting quality behind the bore matters as much as the final dimensions.

Why centrifugal casting

In centrifugal casting, molten bronze is poured into a rotating mold, so denser metal is pushed toward the bore while lighter oxides and inclusions move away. Compared with sand casting, this method typically gives a denser structure, which helps the bushing hold up under continuous load and vibration. Bushings can also be produced by sand casting or metal mold casting when the geometry or quantity calls for it.

Design and alloy selection

We cast and machine to your drawing or a worn sample, matching the original alloy where it is known. Common choices include C93200 (SAE 660) tin bronze for general medium-load service, C93700 where dusty conditions are present, C95400 aluminium bronze for impact and abrasion, and C86300 manganese bronze for high-strength applications. If the original grade is unknown, our lab can check the composition of a sample before quoting.

• Bushings, bearing shells and sliding plates in metric or imperial sizes
• Solid, flanged, thrust and graphite-plugged self-lubricating designs
• Castings from 20 mm to 6000 mm diameter, 0.1-15000 kg
• OEM replacement parts and reverse-engineered copies

Manufacturing and inspection

Casting and machining are handled in one workshop, so the bore, flange and oil grooves are finished to the drawing without extra handling. Each batch is checked by spectrometer for composition and by hardness testing before shipment. For more on our processes, see centrifugal casting and quality control.

Send your drawing or a worn sample for a free evaluation.