FIELD: mechanical engineering. SUBSTANCE: method includes determining of abrasive grain consumption in grinding using a grinding wheel with abrasive grains of maximum possible strength and high concentration, excluding contact between grains. Abrasive grain consumption is determined for general and accelerated longitudinal feed, and the relative ability of bond is defined as a ratio of abrasive consumption for general longitudinal feed to that for accelerated longitudinal feed. EFFECT: enhanced accuracy of determining relative binding power. 1 tbl, 1 ex
