ALFRA Catalog Control Cabinet and Control Engineering Strana 112
Nabídka komerčních zákazníků **Nejlépe prodávané z ALFRA
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SPEED CHART – MULTI-STEP DRILLS/CONICAL ONE-LIP BITS ALFRA-Multi-step drills ALFRA HSS DM 05 Precision Multi-step drills These drills were especially to drill perfectly round and simultaneously deburred holes insheet metals of 3 - 6 mm. The radius transition simultaneously deburrs or bezels the holes. While conical one-lip bits drill slightly conical holes, cylindrical holes can be drilled with ALFRA Multi-step drills. The tools are axial-radially relief ground and can be resharpened at the breast of the cutting tooth. • Take notice of the cuttig speed • Grease the cutting lips in case of application We recommend the use of pillar drilling machines, however, the small ALFRA Multi-step drills can be used on adjustable hand drilling machines. Imperatively use sufficient cooling (ALFRA coolant stick or bore emulsion). Type AM anbohren aufsenken anbohren aufsenken PVD, PVK, DKI anbohren PVD-VA + SVB aufsenken AM-1 Stahlblech S235 800 500 - 180 800 200 - 100 800 400 - 200 V2A Bleche 360 50 - 70 360 100 - 50 360 200 - 100 NEMetalle 1000 800 - 400 1000 500 - 200 1000 800 - 500 Kunststoff weich 1000 1000 - 400 1000 600 - 250 1000 1000 - 600 Copyright by Alfra GmbH 2020 The holes are deburred on both sides by the multistep drills. The multistep drill drills holes in thin materials, enlarges existing holes, makes inclined holes, drills pipes, makes holes penetrating each other. Suitable for any hand drill. For steel — PVC — polystrol — polyester — Plexiglas — card — plywood and similar materials. Can be reground many times, if treated carefully. Material unalloyed Mild steel 700 N/mm2 Material gauge 4.0 mm Drilling paste X m/min 20 - 25 Ø mm U/min 3.0 - 14.0 2600 - 600 6.0 - 20.0 1500 - 400 6.0 - 22.5 1500 - 250 16.0 - 30.0 300 - 200 26.0 - 40.0 330 - 200 36.0 - 50.0 220 - 160 46.0 - 60.0 200 - 130 Mild steel 1000 N/mm2 4.0 mm X 10 - 16 U/min 2100 - 450 1200 - 320 1200 - 280 400 - 210 270 - 160 180 - 130 160 - 100 Alloy Stainless steel steel > 250 < 1000 N/mm2 N/mm2 4.0 mm 3.0 mm X X 8 - 12 5 - 12 U/min U/min 1060 - 230 500 - 300 640 - 160 400 - 250 640 - 140 400 - 250 200 - 100 150 - 80 130 - 80 100 - 60 90 - 60 80 - 40 80 - 50 40 - 20 Al. alloy up to 11% Si Thermoplastic Duroplastic Wood 4.0 mm X 10 - 16 U/min 2600 - 550 1590 - 400 1500 - 350 500 - 260 330 - 200 220 - 160 200 - 130 4.0 mm H2O 12 - 25 U/min 2100 - 450 1270 - 320 1270 - 280 400 - 210 270 - 160 180 - 130 160 - 100 4.0 mm Air 8 - 12 U/min 1500 - 340 950 - 240 950 - 210 300 - 160 200 - 120 130 - 100 120 - 80 25.0 mm 40 - 100 U/min 3000 - 1000 2800 - 1000 2000 - 800 1500 - 800 1000 - 400 600 - 200 500 - 100 We accept no liability for printing errors. This catalogue has been prepared with the utmost care. All technical data and information was checked before going to press. Due to the continuous improvement and development of the ALFRA programme, we reserve the right to modify products from this catalogue or if necessary, also remove them from our product range. For this reason, technical data and products contained in this catalogue may differ - without notice. Through publication of this catalogue all previous catalogues become invalid. Full or partial use and reproduction of this catalogue (drawings, pictures, texts, logos) are prohibited without written permission. As of December 2020 Photo credits: Alfra GmbH, www.fotolia.com, www.123rf.com, www.gettyimages.com All technical data, descriptions and illustrations contained in this catalogue are not binding. We reserve the right to make changes in the course of the further development of the products. All rights reserved. 112
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