Carburizing is a critical surface hardening process widely used in high-performance bearing manufacturing. By diffusing carbon atoms into the surface of low-carbon alloy steel at elevated temperatures, carburizing creates a hardened martensitic case layer with hardness exceeding HRC 60, while maintaining a tough and ductile core (HRC 33–48). This unique combination significantly improves wear resistance, contact fatigue strength, and overall bearing service life under extreme working conditions.
At ZQM Bearings, our carburized bearing components made from high-quality G20CrNiMo bearing steel are engineered to deliver exceptional performance. Both bearing rings and rolling elements achieve a stable hardness range of HRC 60–64, ensuring outstanding resistance to abrasion, surface fatigue, and impact loading. This makes them particularly suitable for applications involving heavy loads, shock, and continuous vibration.
Designed for demanding environments, ZQM carburized bearings operate reliably within a wide temperature range of -40°C to 140°C. The enhanced case hardening structure effectively suppresses crack initiation and propagation, reducing the risk of premature failure and extending maintenance intervals.
Our carburized bearings are extensively applied in critical heavy-duty industries, including locomotives, railway vehicles, rolling mills, mining machinery, and steel processing equipment. In these sectors, where operational reliability and durability are essential, ZQM bearings provide consistent performance and long-term stability.
With advanced heat treatment technology and strict quality control, ZQM Bearings is committed to delivering high-precision, high-reliability bearing solutions tailored for global heavy industry applications.
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