Catalog: Bore Line Hole Making
Company/Brand: Ingersoll Cutting Tools
hole tolerances in Bore Line Hole Making by Ingersoll Cutting Tools
5.9 to 118.0 driver advantages · hole tolerance of it7 to it9 attainable · ...
i standard gun drill sharpening angles depending on the required tolerance cutting performance and desired chip shape the following standard sharpening angles are recommended 30° 30° 15° 40° 30° 0.25xd d 35° standard sharpening for diameters less than .157 standard gundrill carbide length 8.0 19 7 12° 30° 20° 12° 30° 20° 0.25xd d 25° .0 11 standard sharpening for diameters greater than .157 30° 15° 35° 30° 25° 40° diameter range head length .098 .149 .787 .150 .159 .906 .160 .199 .094 .200 .258 1.181 .259 .435 1.378 .436 .722 1.575 .723 .841 1.772 .842 .919 1.970 ...

drill pad forms drilling capacity and hole finish are dependent on the geometrical ... alloys coated drilling through cross holes and angled entry and exits large gap ... alloys maintains high precision hole tolerances excellent surface finish applications ... and stainless drilling through cross holes and angled entry and exit not ... for cast iron greater than .200 hole diameter can be used in wood plastic ... finish is required can be used in cross hole and interrupted cut applications 43 ...
the piece part name part number hole diameter tolerance surface finish ra rz ... 001 1.0 straightness 001 1.0 hole depth hole type check all that apply ... blind hole angled entry drilling from solid cross ... holes material din material spec etc steel ... double lipped [in/mm other through hole angled exit core drill other text ... drill guide method pre-drilled pilot hole bushing coolant pressure p psi flow ...
i mounting a drill point replaceable point drills fig 1 fig 2 fig 3 fig 4 fig 5 check drill point compatibility drill points should always be larger than drill body set-up run-out tolerance stationary drill rotating drill max .0008 max .0008 98
which extends tool life and improves hole tolerance and finish see fig 2 large ... in a confined area at the bottom of the hole coolant must be used as a carrier to ... heat and chips from the bottom of the hole along the drill flutes and out of the ... hole through the tool water base or ... will cut offcenter producing oversize holes insert chipping or low tool life may ... also result and hole finish will be affected fixture ...