How can you assess the quality of a slewing bearing after purchasing it? What are the inspection standards for slewing bearings? Today, the slewing bearing manufacturer, Longwei Slewing Bearings, will guide you through our slewing bearing inspection standards.
Generally, the inspection of slewing bearings requires adherence to the following 17 slewing bearing inspection standards:
1. Slewing Bearing Clearance Inspection
During the design phase, the required axial and radial clearance is usually specified. After production, the clearance data of the slewing bearing must be inspected to ensure consistency with the design drawings. Clearance that is too large or too small can cause problems, and only the clearance that meets design requirements is considered optimal.
2. Slewing Bearing Runout Inspection
Similar to clearance inspection, slewing bearing runout is divided into axial runout and radial runout. Users with the necessary equipment can use testing instruments to inspect the runout data of the slewing bearing to verify if it meets the product design requirements.
3. Slewing Bearing Rotational Flexibility Inspection
Place the slewing bearing flat on a horizontal workbench and rotate it. Generally, if the bearing can be turned manually or with slight force, it is considered normal. If the rotation feels tight, you can apply grease and try again. During the rotation, pay attention to whether there is any abnormal noise in the slewing bearing. If you hear a continuous rolling sound of steel balls, it is normal. However, if there is intermittent or sharp noise, you should immediately report this to the slewing bearing manufacturer.
4. Slewing Bearing Dimension Inspection
Check whether the appearance dimensions of the slewing bearing comply with the design drawings, including the inner diameter, outer diameter, and thickness of the slewing bearing. Ensure that the appearance dimensions match the design requirements.
5. Product Number and Label Inspection
Reputable manufacturers will provide a product number, product label, and quality certificate for the slewing bearing to facilitate installation and preservation by the user.
6. Seal Installation Inspection
The sealing of the slewing bearing needs to be strictly inspected. If the sealing strip is not firmly installed or falls off, it may allow sand and other foreign matter to enter the slewing bearing track, causing it to fail to rotate or even damage the track. The inspection method involves rotating the slewing bearing and checking whether the sealing strip is securely installed and whether the adhesive joints are stable.
7. Appearance Quality Inspection
Although the appearance quality of a slewing bearing does not affect its normal use, it reflects the production management quality of the manufacturer. A reputable slewing bearing manufacturer will have strict production and inspection standards and processes, ensuring that each slewing bearing meets the best inspection requirements in terms of both appearance and internal quality.
8. Packaging Inspection
Before packaging, the slewing bearing should be coated with a layer of anti-rust oil. Then, it should be wrapped with a waterproof membrane for the first layer, followed by a packaging tape for the second layer, and then wrapped with a waterproof membrane for the third layer. For slewing bearings with special packaging and transportation requirements, customized wooden crates may be necessary.
Conclusion
In addition to understanding the above slewing bearing inspection standards, you can also request a slewing bearing production inspection report from the manufacturer. Typically, reputable manufacturers retain an original inspection report for each slewing bearing, which is used to seal and manage the product’s original data. With an inspection report in hand, you can be more confident in the slewing bearing you have purchased. If you need to buy high-quality slewing bearings, then you can contact us and we will provide you with service!
