An Introduction to Spade DrillⅠ

 (This article is divided into two parts and this is partⅠ. For Part Ⅱ please refer to  http://news.chinatungsten.com/en/tungsten-information/78633-ti-10010)

Spade drills are a known device which in many ways surpasses twist drills in range 24 mm onwards. Spade drills have been developed from U-shaped drills and are already applied in a wide range（such as radial drilling tool, vertical/horizontal drilling machine, etc.）with relatively low requirement on equipments.

Standard stub, short, long and extra long holders are available, according to the ratio of holder length to blade diameter we have types of 3D, 5D, 7D, 9D or onward, and for very deep holes, special holders having wear strips to support and guide the drill are often used. Spade drills can be given with holders having coolant holes, either straight holes or helix ones, to direct cutting fluid, under pressure, to the cutting edge.

We, China Tungsten Online, have the pleasure to present to you spade drills of different types and grades. You can have it with cemented carbide tipped blades or H.S.S. blades. Please contact with us through below email address. We promise you a very competitive price.

-to be continued-

Tungsten Carbide Manufacturer & Supplier: Chinatungsten Online - http://www.tungsten-carbide.com.cn
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