After having reached the required depth, reduce speed to 50-100 RPM while exiting from the hole.No pecking is required.Īpply maximum possible coolant flow rate. Activate the cooling system and increase rotation speed to recommended drilling speed, maintain for 2-3 seconds, then continue at recommended drilling feed.Enter the pre-hole at slow speed, feed, and 50 RPM until 1-2 mm before reaching the bottom.Drill a pilot hole 0.5xD deep with a short drill in the same diameter as for the SUMOGUN drill.(1) Do not mount smaller drilling heads than the specified range of the drill bodyĭrill Penetration Instructions on Milling or Turning Machines Indexable SUMOCHAM Inserts and Modular Shank Gundrills Specially tailored SUMOGUN drills will be supplied on request. The SUMOGUN provides end users with the ability to clamp different head geometries and grades,Īccording to the material and application. A polyamide plastic key is available for clamping and SUMOGUN MNSNT enables replacement of the drilling head inside the machine – there is no need Rates (2 to 5 times more than standard brazed gundrills) when compared to most other gundrills The SUMOCHAM drilling heads are fully effective, which enables drilling at much higher table feed Shank face contact and fine pitch thread connection provide very small runout.May be used on standard horizontal milling centers, lathes, and multi-task machines.(the rear threaded connection enables attaching different standard shank types) Exchangeable shank drivers – more economical and versatile system.
All drill bodies feature straight coolant holes.The SUMOGUN features two straight flutes carrying the standard SUMOCHAM drilling heads.ISCAR continues to expand the drill length options above 12xD depth to diameter ratio, in a diameter range of 10 to 25.9 mm and to maximum total length of 400 mm, as well as for Ø10 mm-Ø14.5 mm diameters with flute length of 200 mm and Ø13 mm-Ø14.5 mm diameters with flute length of 250 mm. The MNCNT will continue to be available for longer tools. The new MNSNT will cover the range up to 400 mm length. In August 2013, ISCAR introduced the SUMOGUN MNCNT family, which is produced from tubes (NPA 31-2013).įollowing many changes, ISCAR is now introducing the SUMOGUN MNSNT family of gundrills made with reinforced steel bodies, which feature much better resistance to torsion forces and allow higher table feeds, thus better productivity. The only gundrill in the market with exchangeable drilling heads, as well as exchangeable shank drivers, has been modified with a new reinforced steel body with better resistance to torsional forces, which allows increased table feed
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