The present study evaluates the effect of hammer tips velocity on the grinding parameters i.e. specific grinding energy and particle size distribution (mean particle size) of faba bean. The research was carried out on a laboratory hammer-mill at the hammer tips velocity in the range of 12-18mˇs-1 and seed moisture of between 8 and 18% (wet basis). Significant relations were established between the grinding energy and hammer velocity for various seed moisture content levels. Specific grinding energy increases with an increase of hammer velocity. The highest increase was observed for the high moisture level. A change in the hammer velocity caused differences in the particle size distribution. An increase in the value of the above factor resulted in a decrease of the ground product particle size.