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THREE TYPES OF HORIZONTAL DRILLING TOOLS:
One piece pilot bits are available for all sizes. It is anyhow recommended that all systems from 711 mm and bigger will be made with threaded shank to avoid stress concentrations in diameter change areas. Separate threaded shanks and Thru shanks are available for 508 mm and bigger casing sizes.Separate shank design offers big savings as the shank normally lasts longer than the bit head and the same shank can be used for several different sizes. On the other hand distributors can stock different shank styles and bit heads separately thus being able to give better service to customers.
CASING OD mm |
inch |
DTH HAMMER |
SHANK MODEL |
273 mm | 10 3/4" | 8" | fixed shank |
324 mm | 12 3/4" | 8" | fixed shank |
356 mm | 14" | 8 “ | fixed shank |
406 mm | 16" | 10-12" | fixed shank |
457 mm | 18" | 10-12"" | fixed shank |
508 mm | 20" | 10-12.5" | fixed or threaded shank |
610 mm | 24" | 12-15" | threaded or thru-shank |
711 mm | 28" | 12.5-20" | threaded or thru-shank |
813 mm |
32" |
15-24" | thru-shank |
864 mm | 34" | 18-24" | thru-shank |
914 mm | 36" | 18-24" | thru-shank |
-larger sizes on request |
Más información sobre este producto consulte en: http://www.autana.cl/index2.php?option=com_content&task=view&id=57&pop=1&page=0&Itemid=75