Product Overview
The R40 VA Black Magic drill is engineered for high-performance drilling in stainless steel and copper alloys, featuring a high helix, unique flute form, and ultra-sharp point geometry. It is ideal for pre-tapping and available as a special manufacture upon request.
Specifications- Material: High-Speed Steel Cobalt (HSS Co)
- Surface Finish: Titanium Aluminum Nitride (TiAlN)
- Geometry: R40º
- Point Type: 4 Facet
- Shank Tolerance: h7
Performance Features- Produces short chips in stainless steel and copper alloys
- Optimized geometry prevents work hardening and enhances productivity
- Endmill shank for greater accuracy
- TiAlN coating for longer tool life
Applications
Effective for austenitic stainless steels and long chipping materials, suitable for industries like shipbuilding, medical equipment, automotive, and food processing.
Technical Data- Feed Table: Recommended feed rates for various diameters
- Formulas: Calculations for revolutions per minute, cutting speed, and feed rate
Drilling Recommendations- Step feeding or pecking required for depths greater than 3x diameter
- Reduce speed by 20% for cast or unmachined surfaces
- Use spot drills for optimal positional accuracy and hole size
Catalogue Information- Catalogue Code: D153 for Stub, D169 for Jobber
- Discount Group: A1502
Material Specifications- Steels: Hardened and tempered steels with hardness values ranging from <250 to >850.
- Stainless Steels: Free machining, austenitic, and ferritic + martensitic types with hardness values <250 to <850.
- Coppers: Pure copper and long chip brass/bronze with hardness values <120 to <700.
- Aluminiums: Unalloyed and alloyed aluminium with hardness values <100 to <500.
- Plastics: Thermoplastics such as ABS, PVC, and Polycarbonate with hardness values <340 to <50.
Case Study
A tool life comparison was conducted between the Sutton R40 VA Drill and competitor drills on materials SS304 and SS430F. The R40 VA Drill outperformed competitors, drilling 1254 holes in SS304 and 875 holes in SS430F, compared to lower numbers by competitors.
Drilling Parameters- Cutting Speed (Vc): 20m/min for SS304 and 30m/min for SS430F.
- Feed Rate (f): 0.11mm/rev for SS304 and 0.135mm/rev for SS430F.
- Lubrication: 7% water-soluble lubricant used for both materials.
Conclusion
The Sutton R40 VA Drill demonstrated superior tool life compared to competitors, particularly in SS304 material.
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