GCr15 Material Regular Polyhedron Prism 36 Sides Customized Grade

36 Sides Regular Polyhedron Prism

Technical Indicators

1. Excircle diameter: φ 80-φ 150mm; 

2. Prism thickness: 17-20mm;

3. Rotating center aperture: φ25mm; Material: GCr15;

5. Hardness: HRC62-65;

6. Flatness of working face: Grade 0 (Grade II): ≤ 0.03um;  Grade 1 (Grade III): ≤ 0.05um;  Grade 2 (Grade 4): ≤ 0.1 um; [Customized class 00 (first class): ≤ 0.02 um;]

7,Flatness of datum plane: Grade 0 (Grade II): ≤ 1um;  Grade 1 (Grade III): ≤ 1.5 um;  Grade 2 (Grade 4): ≤ 1.5 um; [Customized Grade 00 (Grade I): ≤ 1um;]

8,Verticality of working surface to datum plane: Grade 0 (Grade II): ≤ ± 10 ″;  Grade 1 (Grade III): ≤ ± 15 ″;  Grade 2 (Grade 4): ≤ ± 20 ″; [Customized Grade 00 (Grade I): ≤ ± 5 ″;]

9. Surface roughness of working face: Ra ≤ 0.025um;

10. Surface roughness of datum plane: Ra ≤ 0.05 um;

11. Parallelism between the upper surface and the datum plane: 2 um;

12. Working angle deviation: Grade 0 (Grade II): ≤ ± 1 ″; Grade 1 (Grade 3): ≤ ± 2 ″; Grade 2 (Grade 4): ≤ ± 5 ″; [Customized Grade 00 (Grade I): ≤ ± 0.5 ″;]

13. Measurement uncertainty of working angle: Class 0 (Class II): ≤ 0.3 ″;  Grade 1 (Grade III): ≤ 0.5 ″;  Grade 2 (Grade 4): ≤ 1.0 ″; [Customized level 00 (first class): ≤ 0.2 ″;]

14,Effective working area of working face: circular area with S ≥ φ15mm (or 15mm * 15mm or D15mm);

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