Material: Special casehardening steel with certified chemical com- position. Core strength > 900 N/mm2. Hardness: Nitrite case hardened to 58 Rc +/- 2, to a depth of 0,8 – 1 mm. (0,031 – 0,039 inch) Finish: All surfaces finished with an enviromentally friendly hard- cast granular material. Tapers precision ground Ra £ 0,2, body of tool precision ground Ra £ 0,4. All surfaces trea- ted to resist corrosion. Quality level: Taper tolerance < AT3. Our gauges are checked to the same masters used by the major machine producers. Our repeatable accuracy Level is £ 1 µm. We also use these gages for spindle production. Runout tolerance: All tolerances are specified in our catalog. We use a maximum of 2/3 the allowed DIN tolerance when manu- facturing our tools. Balancing: We manufacture all of our toolholders to operate at high speeds. Before hardening, all toolholders are rough bal- anced for speeds of up to 8.000 rpm by the addition of flats or cut-outs. Toolholders operated at over 8.000 rpm are finebalanced to G6,3 / G2,5 . We will supply the end user with a balancing protocol on request. We use state of the art balancing equipment and manufacture our own balancing masters.
