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Shape | ![]() X type |
![]() XR type |
![]() S type |
![]() N type |
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Features | The thrust load substantially reduces, and the biting performance improves. This shape is effective when the web is rather thick. | The biting performance is slightly inferior to that of X type, but the cutting edge is hard and the applicable range of work is wide. | Cutting is easy. This shape is generally used. | Effective when the web is comparatively thick. |
Major Applications | General drilling and deep hole drilling. | Long life. General drilling and stainless steel drilling. | General drilling for steel, cast iron, and non-ferrous metal. | Deep hole drilling. |