ABSTRACT. This article presents a research study aimed at determining the effect of selected hammer mill design features on the efficiency of grinding cereal grain. For the purpose of the study, a test stand was developed and constructed to test the influence of the selected mill design features on the efficiency of grinding triticale. The study was conducted with mod- ern measurement equipment consisting of a torque meter with tachometer (MIR-20) and a two-channel meter (MW2006-4) connected to a PC computer. Recording of the measured values was carried out using the program PP203. The tested designs of the hammer mill differed mostly in the shape of the hammers. A characteristic shape indicator was the hammer
angle (α). In the experiment, the design of a standard rotor (α = 0°) was compared to a new design (α = 35°, 45°, and
55°). Statistical analysis of the experimental results was carried out using self-developed software (Statistica Trial 10).
The statistical analysis revealed that the new design of the rotor is more efficient than the commonly used traditional de-
sign and can bring significant economic and technological benefits. The results obtained from this study of grinding triti- cale using hammers with the shape of a circle section, hitherto unknown in the literature, are a valuable contribution to the theory of grinding. They can provide a basis for further research concerning hammer mills.
Keywords. Experimental studies of grinding process, Grinding of grain, New construction of hammer mill.