Shrink Fit Toolholders Offer Consistent Results

Lyndex-Nikken’s shrink fit toolholders are designed for optimum accuracy, rigidity and balance. The solid construction minimizes unbalance variations when changing cutting tools, the company says.

Used in combination with a shrink fit unit, the toolholders rapidly heat up to expand the inside diameter of the holder. As the holder cools, thermal contraction exerts a uniform pressure that shrinks the diameter around the tool for uniform gripping. This process not only ensures accuracy, the company says, but it also allows for tool changes of less than 30 seconds. The separate shrink fit unit employs a direct, liquid-cooling method that quickly and safely cools tools, the company says.

The symmetrical, shrink fit holders are pre-balanced (to G2.5 at 40,000 rpm on all HSK32E/40E holders, to G2.5 at 20,000 rpm on all #40 taper/HSK63 holders and to G2.5 at 15,000 rpm on all #50 taper/HSK100 holders). According to the company, most of these holders can be balanced with the use of an optional balancing kit. The complete line is offered in both inch and metric sizes.