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USER GUIDE

General Recommendations

• It is recommended to use an external coolant jet Three flute drills are used extensively on nonferrous metals
at a minimum pressure of 10 to15 bar during drilling because of their excellent performance on these materials.
for prolonged tool life and to facilitate chip evacuation. These solid carbide drills were designed with a special
• When machining alloy and stainless steel, it cutting edge geometry that can be used on a broad
is recommended to use ER JET 2 collet to spectrum of materials including steel, stainless steel, high SOLID CARBIDE DRILLS
prolong tool life and prevent built-up edge. temperature alloys, cast iron and nonferrous materials.
• Semi-synthetic or emulsion lubricants should Their dimensions are according to DIN 6537 standard.
be used to extend tool life. The SCCD drills are manufactured in m7 diameter
• Drilling stainless steel or high temperature alloys requires tolerance, with cylindrical shanks according to DIN 6535
high oil pressure and 7-15% mineral or vegetable based HA standard, 30° spiral flute helix, 140° head point angle
oil emulsion for prolonged tool life. Dry machining and a reinforced web taper.
may badly affect hole quality and drill tool life. The drills can be used on surface applications of up to 20°
• In case of chip evacuation problems or when poor sloped entry/exit. (In this case, the drill should be held in a
surface finish is obtained, it is recommended thermal shrink collet or a MAXIN power chuck). The 3 flute
to use pecking cycle. solid carbide drills cannot be used on radial drill adjustment
• For optimal performance, it is recommended to use the diameter devices such as our FITBORE adapter.
3 flute, 5xD solid carbide drills in rotating or stationary
applications with a maximum of .0008” runout.
Larger runout will reduce drill performance
and badly affect hole quality. 20º max
• The solid drills can be clamped into any
of ISCAR’s tooling systems such as:
1 Collet chucks
2 Thermal shrink chucks Followed by a
3 ISCAR MAXIN power chucks CHAMDRILL
• It is recommended to use the solid drills in SHORTIN 3 Flute Centering Drill SUMOCHAM/CHAMGUN
adapters with AA super precision collets to obtain a
high level of hole quality and prolonged drill tool life.
Balanceable adapters should be used for applications
above 10,000 RPM in order to minimize vibrations
and gain a reliable and prolonged cutting edge life.
• Interrupted cut applications reduce hole accuracy, 140º 140°
quality and drill life. Advantages
• See pages 230-231 for troubleshooting The drills provide higher hole cylindricity, roundness,
guide for common problems. straightness, concentricity and surface finish when
• Solid carbide drills can be used on a wide range compared to 2 flute solid carbide drills.
of materials and different cutting conditions with The 3 flute solid carbide drills with a 140˚ point
high reliability and performance repeatability. head can serve as centering drills for CHAMDRILL/
This can reduce tool inventory and logistic costs. SUMOCHAM or CHAMGUN if necessary.
3 Flute Solid Carbide Drills

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