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The shaft bearing is a mechanical component primarily used to support a rotating shaft, allowing it to spin freely. These bearings are designed to reduce friction, thereby improving operational efficiency and extending the lifespan of equipment.
When it comes to installing bearings on a shaft, certain precautions should be followed to ensure a proper installation:
Before installation, confirm that the bearing size matches the requirements for the bearing body and shaft. Check if the machined shaft and bearing body have right-angled contact surfaces and can make sufficient contact.
Learn more: Bearing Specification Query Guide: How to Find the Appropriate Bearing Specifications for Your Needs
Inspect the bearing's fine body for any abrasions, dust, or mold sand on its matching oil surface. Use grinding stones or cleaning cloths if necessary.
During installation onto the bearing body, ensure the outer ring of the bearing is properly forced. Avoid installing or knocking the bearing on its outer ring, as it can cause track faults, noise, and affect the bearing's capacity to withstand external forces.
Learn more: Why is my bearing suddenly making noise?
The most common method is using a hammer and sleeve. Make sure the sleeve is centered and tap it lightly with a hammer.
Learn more: How to Install a Bearing ? Bearing Installation Methods
When installing both the inner and outer rings simultaneously, use a backing plate and apply force to both rings simultaneously. Applying force only to the inner ring can cause scratching on the raceway surface due to the balls pressing into the outer ring.
Complete the assembly of rolling bearings following the correct and safe steps.
Utilize specialized tools designed for bearing installation and disassembly to prevent damage during the process. Avoid using improper tools like copper rods, which can cause deformation, damage to rolling elements, and bearing failure.
Inspect old bearings for burrs, scratches, and cracks on the ball or column surfaces. For new bearings, ensure the correct bearing type and check radial clearance against industry standards.
Avoid overfilling the bearing and bearing chamber with oil, as it can lead to slipping of the rolling elements and poor lubrication conditions. Follow guidelines based on motor speed to determine the appropriate oil volume for the bearing chamber.
By following these precautions and steps, you can ensure a proper and reliable installation of bearings on a shaft.
Learn more: How should you lubricate electric bicycle bearings?
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