The Magnum Super Premium drills will substantially outperform cobalt drills in work hardening stainless steel applications. This performance advantage is the result of construction differences between the two types of drills. Cobalt drills, manufactured to Type J NAS907 specs, has a very thick web. This web is necessary to limit breakage of the brittle cobalt steel. Magnum Super Premium drills are made of special Hi-moly tool steel, which is much tougher than cobalt steel. The web on a Magnum Super Premium drill can be thinned considerably due to the toughness of the steel.A Magnum Super Premium drill with its thin web will penetrate the work hardening stainless fast enough to continually cut beneath the chip which is hardening from deformation. This means the drill is cutting softer steel. The cobalt drill, with its thick web, cannot be fed at a fast enough rate to cut beneath the area which is hardening. As a result the cobalt drill is continually drilling into hardened steel.

Tolerance of shaft. Tolerance zones for external dimensions. Please select, h1, h2, h3, h4, h5, h6 ... Tolerance centre: - mm. Tolerance of hole. Tolerance zones ...

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Apr 19, 2005 — For inch units the formula for cutting speed is N=12V/PI*D where N=Spindle speed RPM, V=Cutting speed FPM, D=Diameter of Cutter for milling or ...

To get the best performance and longest life out of your Nachi drills we have provided speed and feed calculators specific to your drill and the material that ...

2017315 — The spotting/center drill should have a LARGER angle than the drill that follows for it to follow with proper guidance, not walking around as ...

Cobra Carbide is a total carbide cutting tools solution provider. To achieve these objective, we use the latest technology in CNC to produce one of the finest ...

Solid carbide drills by Karnasch are designed especially for deep hole drilling and metalworking of steel, stainless steel, hardened steel < 70 HRC, titanium, ...

Solid Carbide Metal Slitting Saws. 4505. without chip breaker. Products · Threading technology · Milling Technology · Drilling technology ...

Tool Steel is stocked to tolerances per ASTM A681-08. Round bars are turned to plus tolerances to allow customers to finish to the nominal diameter. Flat bars ...

Choose from our selection of 50 ga drill bits in a wide range of styles and sizes. In stock and ready to ship.