The TM 280 unit is used to visualize the pressure curve in journal bearings with hydrodynamic lubrication. There were problems related to several tests on this tool. The author wanted to carry out tests again by improving the parameters that had been carried out during previous tests. From this test, comparative data can be taken regarding load variations and resulting speed variations which will later be useful in future use of testing equipment. The test variables for lubricating oil pressure distribution are load, lubricating oil viscosity and journal shaft rotation speed. In this test, 3 variations of rotation speed were carried out, namely: 1500 Rpm, 2000 Rpm, and 2500 Rpm with load variations of 6N, 7N, 8N, 9N, and 10 N. The test was carried out at the Vibration and Machine Diagnosis Laboratory, Department of Mechanical Engineering, Diponegoro University. The results obtained from the test are readings of pressure distribution data on the manometer tube with various variations in loading and variations in rotation speed from the tool data and data obtained from the test. After that, look for Sommerfeld numbers which are useful for reading Raimondi and Boyd graphs to analyze the thickness of the lubricant layer, pressure. maximum, and shaft rotation. Produces a comparison of maximum pressure and position at maximum pressure from theory with testing. Comparison of theoretical data with test data for sliding bearing devices can only be carried out on maximum pressure distribution data and film position at maximum pressure. The performance of the tool for reading pressure distribution is still good but for comparative analysis of theoretical data with test data it still produces large errors. the effect of variations in load and speed is directly proportional.