After the installation of a single row tapered roller bearing, it is necessary to perform tight fitting inspection, direction confirmation, clearance measurement and adjustment, rotation test, temperature and vibration monitoring, alignment inspection and other steps. The specific steps are as follows:
Tight fitting inspection: After installation, first check whether the bearing inner ring is tightly fitted to the shaft shoulder and the outer ring is tightly fitted to the bearing seat hole shoulder to ensure that there is no gap. This can be done through the lighting method or thickness gauge inspection method. The lighting method aims the electric light at the bearing and shaft shoulder to observe the leakage of light; The thickness gauge inspection method is to use a thickness gauge to test the entire circumference of the bearing inner ring end face and shaft shoulder to check for any gaps.
Direction confirmation: Check whether the installation direction of the bearing is correct, especially for bearings with directional requirements, such as tapered roller bearings.
. Ensure that the force position meets the design requirements and avoid reverse installation affecting the performance of the bearing.Clearance measurement and adjustment:
Measuring clearance: Use a clearance gauge or feeler gauge to measure the radial and axial clearance of the bearing, ensuring that the clearance value is within the manufacturer's specified range.
. Excessive or insufficient clearance can affect the performance and lifespan of bearings.Adjust clearance: If the measured clearance value does not meet the requirements, it needs to be adjusted.
. For single row tapered roller bearings, adjustments can be made on the shaft neck by adjusting the nut, adjusting the washer and bearing seat hole internal thread, or using pre tightening springs and other methods. When adjusting, factors such as installation layout, bearing spacing, shaft and bearing seat materials should be considered.Rotation test: Conduct a rotation test under no-load and low-speed operation conditions to observe the operation of the bearing.
. Gradually increase the rotational speed and load, and detect noise, vibration, and temperature rise. If any abnormalities are found, the operation should be stopped and the cause checked. Temperature and vibration monitoring: During the trial operation, use an infrared thermometer to monitor the temperature changes of the bearings and ensure that the temperature is within the normal range. Meanwhile, observe the vibration of the bearings to ensure that the vibration values are within the allowable range.Alignment check: For working conditions where multiple bearings support the same shaft, use a dial gauge or laser alignment instrument to measure radial runout and ensure that all bearings are coaxial.
. This helps to reduce bearing wear and vibration, improve bearing operating efficiency and lifespan.