Hoffman Group Expands Garant Master Tap Line
Hoffman Group’s Garant Master Tap Inox is now available in inch sizes and metric threads with a longer design for increased reach, and for all thread standards.
The Hoffmann Group has expanded its Garant Master Tap product range to include additional thread taps in stainless and high-alloy steels. The Garant Master Tap Inox is now available for thread diameters from M1.6 to M24 and with longer lengths for increased reach. It is also available for UNC and UNF inch diameters from No. 2 to 1" standards in addition to the thread standards M, MF, and G (British standard pipe).
The Garant Master Tap Inox is suitable for producing through and blind hole threads with a tolerance of 6 GX. It is said to provide process reliability, performance capability and a long working life due to its cutting edge geometry, which provides evenly turned chips ejected in a targeted way. The backs of the teeth shear off the chips, polish the chip roots and prevent loose or twisted swarf from forming.
The cutting edges of the Garant Master Tap Inox have also been rounded off to ensure reliable thread machining in stainless and high-alloy steels. As a result, the teeth resist fracture and the tool wears evenly. A wear-resistant powder metallurgy high strength, cobalt-alloy steel (HSS-E-PM) tool material and low-friction TiAlN layer protect against premature wear.
For users that also want to machine different steels, aluminum, brass and cast iron, there is the general-purpose Garant Master Tap, designed to achieve precise results, even in ductile copper alloys, without any axial overcutting and to make frequent tool changes redundant.
One of the most common methods of tapping in use today on CNC machines is 'rigid tapping' or 'synchronous feed tapping.' A rigid tapping cycle synchronizes the machine spindle rotation and feed to match a specific thread pitch. Since the feed into the hole is synchronized, in theory a solid holder without any tension-compression can be used.
The right choices in tooling and technique can optimize the thread turning process.
With macros and canned cycles resident in the CNC on most contemporary turning centers, single point turning of OD threads can seem like almost a default process decision. However, for numerous applications, OD thread rolling has inherent advantages as an alternative to cutting threads.