The new System SOGX turning inserts and tool-holders from Sheffield-based Ceratizit WNT (www.wnt.com) offer users of sliding-head lathes four useable cutting edges.

In addition, by tangentially mounting the inserts, an extremely stable process is assured, says WNT — even under extreme cutting conditions.

Stability is further enhanced by the availability of a coolant supply that can be precisely directed (and fed from either the rear or side of the tool-holder).

SOGX inserts are available in two sizes — 7 and 11mm — each with a choice of coating options: WPX7630 is a coated tough grade for general use, while WUX7620 is a harder uncoated grade for non-ferrous materials and titanium.
The design of the inserts presents a sharp edge to the workpiece, which helps to reduce cutting pressures.

A further benefit of the geometry and seating location is that SOGX inserts can produce a square shoulder, eliminating the need for the secondary operations that may be required with other styles of sliding-head turning tools.

At the same time, cutting depths are increased, with a maximum depth equivalent to 50% of the insert size (3.5 and 5.5mm respectively), meaning fewer passes to remove material and shorter cycle times.