Jour : 04/06/2026

For the worktable of high-precision Coordinate Measuring Machines (CMMs), the preferred material is high-qualision granite (mainly Jinan Black); industrial ceramics can be selected for ultra-high precision scenarios; and aluminum alloy is suitable for general or mobile types. I. Preferred: Precisin Granite (Jinan Black) — The Standard for 95% of Metrology CMMsCore Advantages (Best for Worktables)Extremely…

I. Preferred MaterialJinan Black Granite (Black Biotite Granite, JJG Standard Grade)Natural internal stress fully released, almost no deformation for decadesLow coefficient of thermal expansion, minimal impact of temperature changes on precisionGood damping, anti-vibration, suitable for machine tools, CMMs, and automation equipmentHigh hardness, wear-resistant, suitable for guide surfaces and reference platforms II. Precision Grades (General Industrial…