Interchangeable Spade Drill

	Guhring standard
Manufacturing specifications	Tolerance on diameter: approx. 0.05 mm The most remarkable advantage of indexable spade drills is that both sides can be used for drilling operations. Indexing or tool changing is a simple operation requiring no adjustment. The chip breaker groove ground in the cutting edge ensures the swarf is broken up into small fragments - a distinct advantage on automatics and transfer lines.
Range of applications	Especially suitable for drilling of large diameter holes in steel, alloyed and unalloyed cast steel, austenitic steel, malleable iron, spheroidal iron, bronze, brass etc. Not recommended, however for use in soft materials prone to cold welding or in harder materials with a tensile strength of over 1200 N/mm˛. Indexable spade drills should be used to bore from the solid. When used to enlarge existing predrilled or cored holes, the risk of spade drill breakage is high. Indexable spade drills may be used either as stationary or rotary tool in horizontal, vertical or inverted applications. Whatever the application, care should be taken to ensure a copious and properly directed flow of coolant. A good rule of thumb is that freshly produced swarf should always be cool enough to handle. Because of the great heat generated in boring large diameter holes from the solid at depths of more than 1 x D, it is preferable to use holders provided with coolant ducts. Special holders and cutters can be supplied to order.
Tool material
Cutting direction	right hand-cutting
Surface
Ø-range	19.00 - 88.00 mm
Series No.	596