Twist drill SL VHM, FIRE Internal cooling, shank 6537-HE 5xD8,40mm GÜHRING

Solid carbide twist drill bit, SuperLine, 5 x D, shank according to DIN 6535-HE, with internal cooling

Design: right-hand cut, with special chamfer.Drill with very good self-centering properties, producing short chips even when cutting long-chipping materials.
Application: a universal twist drill that allows to obtain the concentricity of holes with narrow diameter tolerances and good surface quality.For drilling up to 5 x D holes at high cutting speeds.Particularly suitable for long and short-cut materials, such as construction and carburizing steels, cast steel, heat-treatable steels, carbon steels, bronzes, castings, high-alloy AlSi alloys and alloy steels with a strength of up to 1200 N / mm2.

Spiral grooves supplying coolant.Spiral internal cooling.The coolant goes directly to the blades and flushes the chips away from the drill hole.

Technical parameters:

• Ø m7 / h7: 8.40 mm
• Length of the spiral l2: 61 mm
• Length shank l3: 40 mm
• Total length l1: 103 mm
• shank Ø h6: 10 mm
• Steel & lt; 1400 N / mm2 f: 0.200 mm / rev.
• Steel & lt; 700 N / mm2: 130
• Steel & lt; 1000 N / mm2: 120
• Steel & lt; 1400 N / mm2: 105
• INOX ferrite./ martenz .: 60
• INOX austenit .: 55
• INOX duplex: 45
• Cast iron GG / GTS: 160
• Cast iron GGG : 128
• Tytan & gt; 850 N / mm2: 45
• Aluminum & lt; 8% silicon: 260
• Aluminum & gt; 8% silicon: 220
• Copper alloys: 325
• Hardened steel & lt; 55 HRC: 55
• HGNr .: W112