Steel balls in bearings

Steel balls are the most commonly used rolling elements in bearings due to their strength, durability, and cost-effectiveness.

Key Features:

High load capacity – Can withstand heavy radial and axial loads.

Wear resistance – Good wear resistance under normal conditions.

Magnetic properties – Can be magnetized, making them unsuitable for some electronic applications.

Moderate corrosion resistance – Stainless steel variants are rust-resistant, but standard steel easily oxidizes.

High density – Heavier than ceramic or glass, increasing centrifugal forces in high-speed applications.

Applications:

✔ Automotive bearings – Used in wheels, transmissions, and engines.

✔ Industrial machinery – Found in transmission systems, electric motors, and pumps.

✔ Aerospace bearings – Used in landing gear and rotating components.

✔ Precision bearings – Used in clocks, measuring instruments, and robotics.

Common bearing types:

Chromium steel (AISI 52100) – High hardness and excellent wear resistance, widely used in high-load applications.

Stainless Steel (440C, 304, 316) – Corrosion resistant and used in food, medical, and marine applications.