The ball bearings are the components installed between the raceways of the inner and outer rings of the bearing, and they bear and transmit the loads through rolling. Their main functions are:
Reduce friction: Transform sliding friction into rolling friction, thereby significantly reducing the resistance during equipment operation and enhancing efficiency.
Supporting load: Resists the radial load (force perpendicular to the axis) and axial load (force along the axis) from the shaft and the housing.
Ensure rotational accuracy: Make sure the shaft can rotate smoothly and precisely, minimizing vibrations and noise.
The most common material for bearing balls is:
Chromium steel (GCr15): This is the most commonly used material, accounting for over 95% of all bearings. It contains approximately 1% chromium and, after heat treatment, can achieve excellent comprehensive mechanical properties.
Stainless steel (such as 440C, 304): Used in environments where corrosion resistance or high temperature resistance is required, such as food machinery, medical equipment, chemical pumps or underwater devices.
Ceramics (mainly silicon nitride Si3N4): Used in high-end and specialized application fields. Ceramic balls have the advantages of light weight, high hardness, high temperature resistance, electrical insulation, and non-magnetism. They are commonly used in high-speed spindles, precision instruments, aerospace, and other fields.
Other materials: such as plastic (suitable for low-load and quiet operation environments) or special alloys.
Application fields
The application of bearing balls is ubiquitous. Almost all rotating machinery cannot do without them:
Automobile: Wheels, transmission, engine accessories, motor.
Household appliances: washing machines, air conditioners, electric fans, hard disk drives.
Industrial equipment: motors, pumps, machine tool spindles, gearboxes, conveyor rollers.
Aerospace: Aircraft engines, landing gear, navigation systems.
Precision instruments: Medical equipment, optical instruments, measuring equipment.
FAQ
Q: Minimum order quantity?
A: Standard products start from 1 box, customized products can be produced in small batches for trial production.
Q: How to ensure quality?
A: Fully automated production, with each batch tested for roundness, hardness, roughness, etc., accompanied by third-party reports.
Q: Do you provide samples?
A: Free standard samples (cash on delivery), customized samples incur cost fees.
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