The latest additions include a series of positive, screw-mounted, single-sided inserts for external scarfing operations. The SPUB 19 range features eight of the most commonly used radii in the production of thin-walled electrical metallic tubing, also known as conduit. According to Dormer Pramet, the design provides a smooth chip flow from the point-of-cut to the chip winder, usually located above the tool.
Dormer Pramet has also added sizes to its family of negative, double-sided inserts with eight cutting edges for external scarfing. The SNMX 1507-R features a concave top, while the SNMA 1506-R incorporates a flat top. Both inserts are available in 23 of the most commonly used radii for weld-bed removal on the external diameter.
With inserts made of tough cemented carbide topped with a CVD coating, Dormer Pramet says its scarfing range is capable of extreme heat resistance. The geometry of the cutting edge provides high tube surface quality, extended durability and, therefore, longer tool life.
Meanwhile, a newly created range of shims allows the clamping of negative inserts, SNMX 2512 and SNMX 1507 into existing Dormer Pramet holders.