There are significant differences in performance, quality and service life of low-priced bearings and high-priced bearings. The main differences are reflected in the following aspects:

1. Materials and manufacturing processes
Low-priced bearings:
Ordinary steel or low-quality alloys are usually used, with poor hardness and wear resistance.
The manufacturing process is simple, the accuracy is low, and there may be problems such as burrs and high roughness.
High-priced bearings:
Use high-quality bearing steel (such as GCr15, SUJ2) or special alloys (such as stainless steel, ceramic mixed materials).
After precision processing (such as grinding, super-finishing), the surface finish is high and the tolerance control is strict.
2. Accuracy and performance
Low-priced bearings:
The accuracy level is low (such as P0 level or non-standard level), and the vibration and noise are high when rotating.
It is easy to generate heat during high-speed operation and has a short lifespan.
High-priced bearings:
High precision level (such as P5, P4 and even P2 levels), suitable for precision machinery (such as machine tools and instruments).
It can still maintain stable operation under high speed and high load, with low noise and low temperature rise.
3. Lubrication and sealing
Low-priced bearings:
Using ordinary grease is easy to volatile and oxidize, and requires frequent maintenance.
The sealing structure is simple (such as single-layer rubber seal), and the dust-proof and waterproof performance is poor.
High-priced bearings:
Use high-performance lubricants (such as fully synthetic grease) for long-term maintenance-free.
Multi-seal design (such as contact + non-contact seal), with strong dustproof, waterproof and corrosion-proof capabilities.
4. Lifespan and reliability
Low-priced bearings:
Under standard load, lifespan is short and prone to early failure (such as peeling and stuck).
Suitable for low-load, intermittent working scenarios (such as household appliances, ordinary machinery).
High-priced bearings:
After strict life tests (such as L10 life calculation), high durability.
Suitable for high load, continuous working environments (such as industrial motors, automotive gearboxes).
Kent Bearings specializes in manufacturing high-quality silent motor bearings for more than 20 years. Using Kent Bearings can reduce after-sales costs. Kent Bearings with long life are the best choice to ensure the stable operation of your products.

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