Collet tool holder SK series

ERthreadcutting

The NIKKEN Slim Chuck is our standard and precise collet chuck solution. The construction consists of three components – the main body/shank with fine, molybdenum coated, external ground thread and internal collet bore, an external clamping nut with unique TiN bearing, fine internal coated ground thread and finally a precision collet. Both the collet and the body feature a highly accurate 8 degree taper. Competitor solutions (ER systems and the like) are normally based around a 16 degree collet taper so in reality provide less that half the accuracy and gripping capability of the Slim Chuck. Operation is very simple. The collet is loaded into the nut before the two parts, now ‘as one’ are screwed onto the main/body shank of the holder. The cutting tool is then loaded into the bore of the collet at the required length before tightening in a clockwise direction. Normally starting by hand, and then with the appropriate wrench, this rotation moves the nut up the thread of the holder and, very effectively and precisely, collapses the collet to grip and retain the cutting tool. It is straight forward and common sense to appreciate when the Slim Chuck is tightened correctly, however, should it be preferred, torque wrenches are available to achieve our absolute recommended tightening torque for each size of Slim Chuck.