deep hole drilling bit welded or indexable inserts all available for deep hole drilling and boring machine use many models

deep hole drilling bitwelded or indexable inserts all availablefor deep hole drilling and boring machine usemany models for choice

the drill length and drill bit diameter ratiao can be 100:1. 

drill diameter(mm)shank dia.(mm)drill dia.(mm)shank dia.(mm) 

17.8-19.5	16	43 45 47	40
19.51-21.99	17.5	48 50 52	43
22-24.9	20	55	48
25-26.99	23	57 58 60	52
27-29.99	25	62 63 65	56
30-31.99	27	68 70 72	61
34.5-35	30	75	65
38-42	35	80	70

deep hole drilling