4mm

Grade 25 Chrome steel bearing balls are widely used in precision ball bearings as well as most aerospace, transportation and industrial applications. Chromium (Cr) has a tendency to increase hardness, toughness and wear resistance of steel. Chrome steel is a chrome alloy carbon steel, not a chrome plated steel. Chrome steel balls have excellent surface quality, high hardness and high load bearing capacity as a result of through hardening (Rockwell C 60-67).Chrome steel is approximately 96% iron and capable of being attracted by a magnet. Less expensive case-hardened carbon steel balls are used in consumer goods like drawer slides and casters.

Grade 25 Chrome steel bearing balls are widely used in precision ball bearings as well as most aerospace, transportation and industrial applications. Chromium (Cr) has a tendency to increase hardness, toughness and wear resistance of steel. Chrome steel is a chrome alloy carbon steel, not a chrome plated steel. Chrome steel balls have excellent surface quality, high hardness and high load bearing capacity as a result of through hardening (Rockwell C 60-67).Chrome steel is approximately 96% iron and capable of being attracted by a magnet. Less expensive case-hardened carbon steel balls are used in consumer goods like drawer slides and casters.

Grade 25 Chrome steel bearing balls are widely used in precision ball bearings as well as most aerospace, transportation and industrial applications. Chromium (Cr) has a tendency to increase hardness, toughness and wear resistance of steel. Chrome steel is a chrome alloy carbon steel, not a chrome plated steel. Chrome steel balls have excellent surface quality, high hardness and high load bearing capacity as a result of through hardening (Rockwell C 60-67).Chrome steel is approximately 96% iron and capable of being attracted by a magnet. Less expensive case-hardened carbon steel balls are used in consumer goods like drawer slides and casters.