Preparation for Bearing Installation
Prior to installing bearings into their respective housings, a number of preliminary preparatory steps should be taken to ensure that the bearings are installed correctly and will achieve maximum performance and service life.
1. Inspect the bearings
Carefully inspect the bearing package to ensure that the bearings have not been damaged in transit or storage. Check the bearings designation, outer and inner dimensions, basic load ratings and seal/shield types to make sure they fit the application requirements.
2. Clean and dry the bearings
Clean and dry any contaminants from the bearings and housings before installation. Contaminants, such as metal chips, grinding dust and dirt, can damage the bearing and its sealing mechanism, leading to premature failure.
3. Grease the bearings
If the bearings are not sealed or pre-greased, they should be lubricated prior to installation. Using the correct lubricant for the application is extremely important. Carefully choose the correct lubricant based on the operating temperature, speed and load in order to achieve maximum performance.
4. Fit the bearing into the housing
Ensure that there is sufficient clearance between the bearings and housings for installation. Tighten shafts and bearing housings to the appropriate torque values. Be sure to adjust the fit of the bearings for the mating components and their respective interference levels.
5. Align the shaft and bearing
Accurate alignment of the shaft and the bearing is critical for proper operation. Shaft alignment should be checked with a straight edge or spirit level prior to installation. If the alignment is not exact, use a dial indicator to confirm that the axial runout within the shaft is kept to a minimum.
6. Final check
After installing the bearing, check the bearing temperature exiting the housing to ensure that the bearing is running cool. Listen for premature noise, vibration and excessive play, as these are signs that the bearing may be misaligned, not properly lubricated or insufficiently tightened.
Following these steps will help ensure that the bearing is installed properly and will provide optimal performance. For further information on bearing installation and maintenance, contact your local bearing supplier.
