Question 1

Why is Bronze C93200 (SAE 660) the preferred material for bearings?

Accepted Answer

C93200 is specifically formulated for anti-friction properties. Its lead content provides excellent emergency 'self-lubricating' characteristics, allowing it to withstand high loads and prevent galling even during temporary lubrication failure, which is critical for the longevity of mechanical systems.

Question 2

What types of parts are best suited for C93200 Bronze at PREMSA?

Accepted Answer

It is most commonly used for bushings, thrust washers, pump fixtures, and industrial wear plates. At PREMSA, we utilize our CNC Turning and Mill-Turn capabilities to produce high-precision bearings that require strict concentricity and surface finish requirements.

Question 3

How does C93200 Bronze perform during precision CNC Machining?

Accepted Answer

C93200 is considered free-machining. It breaks chips easily and allows for high cutting speeds, resulting in a superior surface finish. This is essential for bearing surfaces where a specific Ra (roughness) is required to maintain a proper oil film during operation.

Question 4

Is C93200 Bronze suitable for corrosion-resistant environments?

Accepted Answer

Yes. C93200 offers excellent resistance to sea water and brine, making it a reliable choice for marine hardware and industrial pump components. It maintains structural integrity in harsh environments where standard steel bearings would corrode and seize.

Question 5

What finishing and lubrication options are recommended for Bronze parts?

Accepted Answer

While the material has natural anti-friction properties, we can machine custom oil grooves, spirals, or reservoirs to improve grease retention. C93200 is typically left in its natural machined state, as its surface properties are designed for direct contact with rotating shafts.

Question 6

What should engineers consider regarding the lead content in C93200?

Accepted Answer

Because C93200 contains lead to improve machinability and lubrication, it is not suitable for food-contact applications. For those cases, we recommend lead-free alternatives. However, for industrial machinery and automotive gearboxes, the lead content is the key to its exceptional fatigue resistance.

C93200 Bearing Bronze forHeavy-Duty Bushings

C93200 Bearing Bronze forHeavy-Duty Bushings