Vol. 7, Issue 4, Part C (2025)

Bengal gram (Urad Dal) is among the most vital pulse crops in India, both nutritionally and economically. As the world’s largest producer of bengal gram, India contributes over 70% of the global production. To ensure the efficient processing of bengal gram in flour mills, it is essential to understand its physical properties, such as sphericity, bulk density, coefficient of friction, angle of repose, terminal velocity and moisture content. These properties impact various aspects of the milling process, machinery design and overall milling efficiency. In this investigation the physical properties of bengal gram were studied. As per the physical properties, a flour mill was designed in SOLIDWORKS software. The calculated average bulk density of bengal gram grains is 784 kg m^-3 was reported. The calculated average sphericity for bengal gram grains was 0.81 reported. For bengal gram grains, the coefficient of friction was recorded as 0.32 on mild steel, 0.39 on galvanized iron, 0.35 on aluminium and 0.61 on belt material. The computed mean angle of repose for bengal gram was 38.08º. The average terminal velocity for bengal gram is 14.76 m s^-1 was reported. The average moisture content of bengal gram grains reported as 12%. The average thousand grain weight for bengal gram is 199 g.