QTH and QTHM toolholders have a three-point locate-and-lock design that is said to guarantee centreline repeatability of ±0.1 mm when changing from one solid carbide tool shank to the next. The system works with a rotating locking screw that pushes the tool insert downwards and back against a locating pin to deliver rigidity, repeatability and better tool life. This allows solid carbide tools to be interchanged within 30 seconds, ITC says.
The QTH series are imperial dimension holders with shank diameters of 0.5", 0.625", 0.75", 1" and 1.25", and an overall length of 2.75". For metric machine shops, the QTHM line of toolholders is available with a diverse range of dimensions to suit all machine types.
