Hold the line

Setting time is substantially reduced – by as much as 75% – with the Gewefa design featuring a spring plunger mounted in the toolholder body. This locates into a fine groove machined into all Sandvik EasyFix boring bar shanks and aligns the bar position precisely for the correct centre height. Along with the hydraulic chuck operation, a secure grip is guaranteed with integral anti-vibration damping to optimise the machining process.

By eliminating the previously accepted method of securing boring bars into a toolholder with reduction sleeves, the opportunities for inaccuracy and bar deflection during boring operations are now greatly reduced.

Gewefa also offers a solution for other proprietary systems with the ground angle on the back end (of the bar) locating against a stop pin at the base of the toolholder. This ensures precise central positioning and orientation with the bar then locked into the hydraulic chuck.

The advantages of all systems are a 50% increase in cutter life due to the more secure, vibration-free grip, guaranteed repeatability when changing like-for-like bars and a simple, fool-proof fitting process.

Gewefa offers the hydraulic chuck for Arno, System Dieterle, DTS, Hobe, MAS, Sumitomo, Sandvik, Simtek and Vargus screw orientation options along with other systems.

Gewefa www.gewefa.co.uk