Small Diameter Bronze Bushing

Small diameter bronze bushings are often the parts that stop a machine, not because they are expensive, but because they are hard to source quickly in the right alloy and tolerance. We cast and machine these compact bushings to your drawing or to a worn sample, so the replacement fits the bore, the shaft and the lubrication path it was designed for.

Design & materials

Small bushings carry high unit loads in a small contact area, so alloy choice matters more than size. Typical options include:

• C93200 (SAE 660) tin bronze for general medium-load, medium-speed service
• C93700 high-lead tin bronze where dirt or marginal lubrication is present
• C95400 aluminum bronze for shock and higher load duty
• C86300 manganese bronze for high-strength, slow-moving applications
• C90700 tin bronze and C51100 phosphor bronze for finer, lower-load fits

We can also match an original grade from your drawing, nameplate or sample, including reverse-engineered parts.

Typical applications

These bushings are commonly used in mining and quarrying equipment, aggregate and crushing plants, pumps and hydraulic assemblies, and general heavy machinery where a compact bearing surface is required. They suit oscillating, slow-rotating and moderate-speed shafts, and can be supplied with oil grooves, grease holes, flanges or plain cylindrical profiles as your drawing specifies.

Manufacturing & inspection

Melting is done in-house to the requested grade, with a spectrometer check before pouring. Small bushings are usually produced by centrifugal casting, which gives a denser structure than static sand casting in the same section; sand casting and metal mold casting remain available for other geometries. After casting, parts are CNC machined to drawing and checked for composition and hardness in our own laboratory. See our centrifugal casting process and quality control steps for more detail.

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