In this paper, the contact phenomenon between tool and work piece used for machining operation in various CNC machines tool is simulated to measure the wear of cutting tool, coefficient of friction (COF) and frictional force using state-of-the-art pin-on-disc apparatus. Pins used for testing were same as that of tool insert used in actual CNC machine tool. The tool used was made of tungsten alloys with carbide coating having a nose radius 0.4 mm. The trials were performed on a carbide insert for the duration of 5 min for loads varying from 10 to 30 N in 5 N steps with disc speeds of 580 rpm with 30 mm track diameter. The results show that the COF varies with the duration of rubbing, normal load and speeds. In general, COF decreases continuously for certain duration of rubbing and after that it remains constant for the rest of the experimental time. From experimental investigation it is observed that the measured wear using pin-on-disc apparatus shows good agreement with the actual measured wear on CNC machine tool for turning operation. The wear of carbide insert was increased initially and then varied steadily as load varies from 10 to 30 N. Hence it is concluded that the approach presented in this paper can be effectively used to measure the wear of tungsten carbide tool before performing actual machining.