Commercially available rectangular profi les can be tricky. It‘s not just the fact of depending on wide tolerance, all four sides of the profi le may not have contact with all four sides of the clamping head; however, dimension and profi le variances are also very common. Not to mention the tremendous tool wear caused by vibration when the rectangular profi le is not clamped properly. Therefore, it is no surprise that materials that have widely fl uctuating tolerances are at the bottom of the machining list. With our SPANNTOP 2x2 chuck you can span material tolerances to ± 1.0 mm in the width or height of the profi le. Well-engineered mechanics or hydraulics and a four-segment clamping head make it possible. During the clamping cycle the opposing segments move in tandem. The result is that all four sides are clamped at full force, making radial movement of the material impossible. Now you can fi nally machine rectangular material with a minimum amount of tool wear