BTC VACUUM TOOL MOUNTING SPINDLE SK50 Basic Tool Holder Spindle SK50 with high concentricity Integrated Calibrated Balls make separate zero gauges unnecessary Basic spindle option for the BTC I Starter The vacuum clamping option is operated via the membrane keyboard, in the same way as all other power-operated functions of the tool location such as the spindle brake and 4 x 90° locking High Precision Spindle SK50 The built-in calibration balls make separate zero gauges unnecessary. For different tool shanks there are suitable adapters: Steep Taper VDI Straight Shank Polygon Shaft Hollow Shank Taper Hollow Shank Taper SK 30 to SK 45 VDI 16 to VDI 60 PSC 32 to PSC 80 HSK 25 to HSK 100 HSK 25 to HSK 100 with manual eccentric without tool clamping clamping All adapters are case hardened, burnished, polished, and – as far as technically possible – equipped with an integrated calibration ball Power-operated tool clamping ( BTC II Allrounder upwards ) Universal Spindle for Power-operated Tool Clamping Adapter for Power-operated Tool Clamping Power-operated tool clamping with direct, universal adapter mounting Universal, power-operated tool clamping for steep tapers DIN in the mounting spindle — direct adapter mounting and power-opera- 69872-1 and HSK DIN 69893 — tool clamping is activated ted clamping of tool holder for high precision. through the keyboard. 4 BTC