CommissioningItem no. 10302178, Revision 02 27 ( 40 )Ü Operate the HF spindle at a maximum of 50 % of the max. permissiblespeed for approx. 5 minutes.Ä See Commissioning [} 26] sectionÜ Operate the HF spindle for approx. 2 more minutes at a maximum of 80 %of the maximum permissible speed.This preheats the grease lubrication of the bearing and protects it.