The safety protection and storage of the first generation of automotive wheel hub bearings need to be comprehensively managed from five aspects: environmental control, packaging protection, storage standards, regular inspections, and handling operations. The specific methods are as follows:
1. Environmental control
Dry ventilation:
The storage environment should be kept dry, with relative humidity controlled between 60% -75%, to avoid bearing corrosion caused by water vapor condensation. At the same time, ensure good ventilation, reduce dust accumulation, and prevent impurities from entering the interior of the bearing.
Temperature stability:
The temperature change range should be controlled within ± 8 ℃ to avoid the accumulation of water droplets caused by severe temperature differences.
. When stored for a long time, it is recommended to choose a cool area and maintain a temperature of 20 ℃ -25 ℃ for optimal results.Avoid light and dust:
Avoid direct sunlight to prevent ultraviolet rays from accelerating the aging of bearing materials.
. The storage area needs to be regularly cleaned to reduce the risk of dust pollution to the bearings.2. Packaging Protection
Sealed Packaging:
Unused bearings should be kept in their original packaging intact until they are unpacked before installation.
. The opened bearings need to be repackaged with polyethylene film to ensure sealing and prevent water vapor and dust from entering.Moisture and dust prevention:
For large bearings, supports (such as wooden pallets) can be used on the inner and outer ring sides for horizontal support, while covering with moisture-proof cloth or dust covers to further isolate environmental factors.
.Isolation of corrosive substances:
The storage area of bearings should be kept away from corrosive substances such as acids and alkalis to avoid chemical contamination that may cause damage to the bearing surface.
.III. Storage Norms
Storage off the Ground:
Bearings should be stored at least 30 centimeters above the ground to avoid direct contact with the ground, which may cause dust accumulation or moisture.
.Avoid stacking:
Bearings should not be stored in multiple layers to prevent them from falling, damaging, or deforming due to pressure.
. Large bearings are recommended to be placed flat to ensure even force distribution on the entire side. Vertical storage may result in permanent elliptical deformation.Classified storage:
Bearings with dust covers and oil seals should be stored in order of their shelf life, following the principle of "store first, use first" to avoid long-term accumulation and aging of seals.
.Fourth, Regular Inspection
Inventory Check:
It is recommended to conduct a comprehensive inspection of the stored bearings every quarter, focusing on whether there is rust, wear, or damaged seals on the surface of the bearings.
.Lubricant condition inspection:
For bearings pre coated with lubricating grease, it is necessary to check whether the grease is dry or deteriorated, and if necessary, replenish or replace the grease.
. Overdue handling:Bearings stored for more than 5 years should be sampled and inspected for the condition of the anti-corrosion oil. If the anti-corrosion oil fails, the bearings should be cleaned and coated with anti-corrosion protective oil again, and the original packaging should be restored.
.Fifth, Handling Operations
Handle with care:
When handling bearings, gloves should be worn to avoid sweat from the hands corroding the surface of the bearings.
. During the transportation process, handle with care to prevent internal damage caused by severe impact.Use professional tools:
If large bearings need to be moved, a crane or specialized handling tool should be used to avoid manual tapping or forced dragging, to prevent bearing deformation or seal damage.
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