minimize vibrations  Technical specification is specific to one manufacturer (DMG Mori). To be more  competitive tender, we kindly request from Contracting Authority change this  specification as below: 2.4.1 The machine shall have a cast-iron or mineral cast body or Steel body  filled by Hydropol concrete structure to minimize vibrations  Q21  Item 2.4.7  Rapid speed shall be minimum 30 m/min for X and Z axes and a minimum of 10  m/min for Y axis.  According to our market research, most European origin leading Turning Mill  Center manufacturers offer identical rapid speed range for Y and Z axis’s while X  axis range is slightly lower. Therefor in order to increase the competition among various manufacturers we kindly request you to update this requirement as follows ; “Rapid speed shall be minimum 20 m/min for X and Z axes and a minimum of 10  m/min for Y axis”.  According to APS Center’s way of provide services to users,  axis speeds determined for effectively process complex materials  in certain time periods.  Based on the comprehensive market research conducted,  requested technical specifications are available in more than one  eligible product. Therefore, the specifications remain unchanged.  Q22  Item 2.4.14  Machine milling spindle taper shall be either Capto C6 or HSK-T63 industry  Considering the fact that HSK-63 (HSK-A63) is not only compatible with HSK-T63  but also covers the HSK-T specification, would you kindly clarify if it is acceptable  to offer HSK-63 spindle taper?  The HSK standard provides several forms under its explanation  and the most common type of milling spindle interface in the  HSK standard are the A and the F. The F variant does not  provide tool orientation in the spindle as it does not have a key- way. Although it is true that HSK-A63 tool holding standard is  compatible with the HSK-T63 standard, the reverse is not true  and HSK-T63 holders are not recommended to be used in HSK- A63 as they may cause severe damage to the tool holding  mechanism. The reason for this is the way the key-way of the A  and T variant of HSK differ in their tolerances. The T variant of  the HSK tool holder is much more tightly specified and it is  CLARIFICATION No: 1 Publication Ref: EuropeAid/140639/IH/SUP/TR  Subject: Supply of Equipment for Advanced Prototype Station (APS) Sayfa  10  /  23