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How are bearings produced
Release time:
2025-03-28 09:09
During the entire production process, key parameters such as bearing size, hardness, roundness and surface finish need to be strictly inspected to ensure its reliability and service life.
The production of bearings is a complex and sophisticated process, involving multiple steps and processes, mainly including raw material processing, heat treatment, grinding, assembly and other links. The following are the main processes for bearing production:
1. Raw material preparation
The main material of bearings is usually bearing steel, such as SAE 52100 steel, which is widely used for its high hardness, wear resistance and dimensional stability.
Raw materials are usually supplied in the form of bars, pipes or wires, cut and initially processed according to bearing type and size.
2. Ring Processing
Forging: The rod or pipe is forged to form a blank of the bearing ring to improve the density and flowline of the material.
Car processing: The forged blank is turned to initially form the inner and outer diameters and end faces of the ferrule.
Heat Treatment: The ferrule is treated with high temperature (such as quenching and tempering) to improve hardness and wear resistance.
Grinding and Super Finishing: The heat-treated ferrule is precision grinding and super finishing to ensure dimensional accuracy and surface finish.
3. Rolling element processing
Steel ball processing: The wire or rod is cold-headed to form a spherical blank, which is then heat-treated, grinded and polished, and finally reaches a nearly perfect circle.
Roller processing: Rods or wires are turned or cold-headed, followed by heat treatment and precision grinding to ensure dimensional and shape accuracy.
4. Cage processing
The cage is usually made of materials such as stamped steel, brass or nylon, and the processing process includes punching, stamping, drilling and pickling.
5. Assembly
All parts (crocodile, rolling element, cage) will be assembled after passing the inspection. The assembly process includes demagnetization, cleaning, closure checking, and riveting cages.
After assembly is completed, the bearing is inspected to ensure that its performance and accuracy meet the standards, and then anti-rust treatment and packaging are carried out.
6. Quality control
During the entire production process, key parameters such as bearing size, hardness, roundness and surface finish need to be strictly inspected to ensure its reliability and service life.
Summary: Bearing production is a highly sophisticated process involving multiple process steps and strict quality control. From raw material preparation to final assembly, every step is critical to ensure high performance and long life of the bearing.
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