2010 Full-Line Drill Catalog - Desanto

When shrink fitting tools in shrink fit chucks, the decisivefactors for ensuring the safe clamping of the tool in thetool holder are solely the heating and cooling of the toolholder. The heating process expands the shrink fit chuckenabling a tool to be inserted or withdrawn respectively.During the cooling process it contracts again and clampsthe inserted tool with maximum clamping force.Because the shrink fit chucks can become extremely hotin localised areas during the heating process and thetools shrink fitted for insertion or withdrawal respectivelypossess very sharp cutting edges, it is paramount thatthe operator wears Kevlar gloves during the shrink fitoperation to prevent burns and cuts to the hands.Shrink fit extensions increase the scope of a tool‘sperformance and reduce tool surface imperfections. Aswith shrink fit chucks, the tool is clamped in the shrinkfit extension and ideally in an hydraulic chuck. Naturally,shrink fit extensions can also be clamped in shrink fitchucks.Toolholders279