CREDIT: WALTER USA
Walter has expanded the product range with the addition of the WT26 indexable inserts and toolholder system, which are primarily designed for small part machining, or Swiss-style turning. The new addition includes tangentially installed partial-profile and full-profile thread-turning inserts with sharp cutting edges to achieve optimal machining results for small diameter workpieces. The tangential inserts feature sharp corner radii and are conventionally known as zero radius inserts.
The precision-ground cutting edge and chip breaker groove ensure ultimate precision and tool life when turning. The tools are for turning a workpiece diameter up to 1mm (0.039") in automatic lathes and multi-spindle machines. The indexable insert screw can be accessed from both sides for simple insert indexing. The toolholder’s shank sizes are 0.500", 0.625" and 10mm × 10mm, 12mm × 12mm and 16mm × 16mm.
All WT26 insert types fit in the same toolholder. A dovetail profile absorbs lateral, or axial, forces. Suitable applications include parting off and grooving, forward and reverse turning, and thread turning. Grooving along close shoulders is possible thanks to the installation of the inserts at a 1° angle.
The inserts are WSM23X and WN23 carbide grades. The universal physical vapor deposition (PVD) grade is for parting off, grooving and turning with a moderate to low cutting speed (vc) and axial depth of cut (ap). The primary applications are machining steel, stainless steel, materials with difficult cutting properties and non-ferrous metals (ISO P25, M25, S25 and N25 material groups).
The uncoated WN23 is an extremely tough and abrasion-resistant grade for machining non-ferrous metals (ISO N20 material group). Secondary applications include machining steel, super alloys, and other materials such as carbon fiber composites and graphite (ISO P, S, and non-ISO O material groups).
View a video about the WT26 thread turning insert and toolholder