Walter GB offers buy-20-get-another-10-inserts-free promotion on Tiger.tec Silver turning inserts

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A special 'buy 20 inserts and get another 10 free' incentive is being offered by Walter GB for its Tiger.tec Silver range of indexable turning inserts for ISO P steel and M stainless steel applications.

The limited-period offer applies to both WPP10S and WPP20S grade inserts in FP4, MP4 and RP4 positive style geometries, as well as the MP5 and RP5 negative inserts, for all steels. The offer also covers the WMP20S grade positive inserts FM4, MM4 and RM4 targeted at small/medium batch work in both steel and stainless steel.

Compared to competing products, Tiger.tec Silver inserts promise performance increases of up to 75%, the company claims. For example, a WPP10S MP4 insert has machined 60 components, compared to 35, with only one dimensional correction required instead of the usual five required for maintaining correct size.

The WPP10S and WPP20S positive inserts are recent additions to the Tiger.tec Silver range, where the MP5 and RP5 negative styles in those grades have proved their worth in a variety of universal applications. The newer positive styles have been introduced for small diameter ISO P steel applications at low cutting pressures, in particular.

The FP4 geometry is for controlled chipbreaking when finishing; MP4 for machining particularly long-chipping materials; and RP4 for roughing.

Also designed for controlled chipbreaking, the MP4 geometry is available with two clearance angles (7° and 11° - CCMT and CPGT, respectively), as well as in precision sintered and precision ground designs. The higher clearance angle of 11° enables the machining of smaller diameters. Precision grinding delivers an indexing accuracy of +/- 25 microns, which is twice as accurate as sintering and is ideal for precision finishing, says Walter GB.

The positive inserts feature two to four cutting edges and, compared to a negative insert that has double the number of cutting edges, users might assume that the positive insert is a less economical solution. However, the positive basic shape offers lower cutting pressures and a softer cutting action for machining smaller diameters (from 8.5 mm internal diameters) or very long, unstable components – situations where the positive insert makes economic sense.

On multi-spindle machines, users can, for example, achieve higher feed rates, due to the reduced cutting pressure, and gain excellent chip control.

The WMP 20S inserts, which can machine both steels and stainless steels, include FM4 for finishing, MM4 for medium cutting on long-chipping materials and RM4 for roughing.