Kluber ALTEMP Q NB 50 is the recommended lubricant for PPC chucks. ALTEMP Q NB 50 is a white lubricating paste containing a mineral base oil, a barium complex soap and inorganic solid lubricants. This lubricant has been found to improve the sliding characteristics of moving chuck components and enabling constant clamping force. It prevents stick-slip and protects against fretting and tribo-corrosion in frictional or positive connections. ALTEMP Q NB 50 is resistant to oils and water soluble cutting fluids.