The experimental study was employed in BLOHM horizontal
spindle surface grinding machine (6.5 kW). The setup
for graphite assisted grinding, designed and built for the
investigations is shown schematically in Fig. 1. A photograph
of the setup is shown in Fig. 2. The fine graphite
powder, mixed with water-soluble oil and a little quantity of
grease to a paste form, was loaded into the cylinder A. The
lubricating paste was pushed out through a rectangular
nozzle D (1mm 25 mm size) by a pneumatically operated
piston B. C is a small soft rubber wheel freely running
and pressed on to the grinding wheel so that it rotated with
the grinding wheel. The paste pushing out through the
nozzle was transferred first to the rubber wheel C and from
there to the periphery of the grinding wheel. The flow rate
was calibrated for different pressures given to the piston.