Deine Zahlungsinformationen werden sicher verarbeitet. Wir speichern keine Kreditkartendaten und haben auch keinen Zugang zu deinen Kreditkartendaten.
Engineers, maintenance technicians, and equipment builders who need reliable rolling elements often struggle to source bearing steel balls in exact metric and inch-fraction sizes without ordering large minimum quantities. These high-precision bearing steel balls are sold by the kilogram, giving you the flexibility to stock only what you need across 35 available diameters.
Each ball is machined from through-hardened chrome steel (GCr15 / 52100 equivalent), delivering consistent roundness and surface finish across the full diameter range of 3mm to 19.844mm (approximately 0.118 in to 0.781 in). Sold as 1kg per variant, actual piece count varies by diameter — smaller balls yield more pieces per kilogram.
Typical applications include replacement rolling elements in deep-groove ball bearings, check-valve seats in hydraulic and pneumatic systems, precision jigs and fixtures, and load-distribution components in linear motion assemblies. Whether you are rebuilding industrial bearing steel ball assemblies or prototyping a custom valve body, these balls provide the dimensional accuracy required for interference-fit and clearance-fit installations.
| Material | Chrome steel (GCr15 / AISI 52100 equivalent) |
|---|---|
| Diameter Range | 3mm – 19.844mm (approx. 0.118 in – 0.781 in) |
| Available Diameters | See variant options |
| Package Weight | 1 kg per order |
| Piece Count per kg | See variant options (varies by diameter) |
| Surface Finish | Bright polished |
| Hardness | Typically 60–66 HRC (through-hardened) |
| Sphericity Tolerance Grade | Typically G10–G100; contact us to confirm for specific diameter |
| Corrosion Resistance | Moderate; suitable for use with standard bearing lubricants |
| Typical Applications | Ball bearings, check valves, precision jigs, linear motion components |
Measure the bore diameter of your bearing housing and the existing ball diameter using a micrometer or caliper. Match the measured diameter to the closest available size in the variant list. For interference-fit applications, verify the grade tolerance (G10–G100) against your bearing manufacturer's specification. If you are unsure, contact us to confirm compatibility before ordering.
Load capacity depends on the diameter, the number of balls in the assembly, and the bearing design. These balls are made from through-hardened chrome steel (GCr15 / AISI 52100 equivalent) with a typical hardness of 60–66 HRC, which is consistent with standard industrial bearing ball specifications. For precise dynamic and static load ratings, refer to your bearing assembly's datasheet or contact us with your application details.
Chrome steel bearing balls offer moderate corrosion resistance and perform well in dry or lightly lubricated environments. For applications exposed to water, chemicals, or high humidity, consider applying a compatible bearing grease or lubricant to the ball surface. If your application requires higher corrosion resistance, stainless steel balls may be more appropriate — contact us to discuss alternatives.
Yes. The range includes both metric sizes (e.g., 3mm, 4mm, 5mm, 6mm, 8mm, 10mm) and inch-fraction equivalents expressed in millimeters (e.g., 3.175mm = 1/8 in, 6.35mm = 1/4 in, 9.525mm = 3/8 in, 12.7mm = 1/2 in, 19.05mm = 3/4 in). Select the diameter from the variant dropdown that matches your application's specification.
Piece count per kilogram varies by diameter — smaller balls are lighter, so you receive more pieces per kilogram. For example, 3mm balls yield significantly more pieces per kg than 19mm balls. If you need an estimated piece count for a specific diameter before ordering, contact us and we will provide the approximate quantity based on the steel density and ball volume.
Yes. Solid chrome steel balls are commonly used as check-valve seats in hydraulic and pneumatic systems where a hard, dimensionally accurate ball is required to seal against a valve seat. Ensure the ball diameter matches the valve seat specification and that the operating fluid is compatible with chrome steel. For aggressive chemical environments, consult your system designer before use.
Grade numbers (G10, G25, G100, etc.) refer to the sphericity and surface roughness tolerance of the ball — a lower number indicates tighter tolerances. G10 balls are used in high-precision spindle bearings and measuring instruments, while G100 balls are suitable for general industrial bearings and valve applications. If your application does not specify a grade, G25–G100 is typically adequate for standard bearing replacements. Contact us to confirm the grade available for your selected diameter.
