When storing double row tapered roller bearings, special attention should be paid to environmental control, storage methods, packaging protection, and regular inspections. Specific precautions are as follows:
1. Environmental Control
Temperature: The bearings should be stored in a suitable temperature environment, preferably controlled between 5-25 ℃, with a maximum temperature of 30 ℃ and a minimum temperature of 4 ℃. Otherwise, temperature control measures should be taken. Excessive temperature can cause the rust proof oil to deteriorate, affecting the rust prevention effect of the bearing.
Humidity: The relative humidity of the warehouse should be maintained between 45% and 60%, with a maximum of 65%. Excessive humidity can cause bearing corrosion and reduce its service life. Ventilation and lighting: The storage environment should be well ventilated, avoiding direct sunlight and contact with damp walls. Direct sunlight may cause an increase in bearing temperature and accelerate the aging of rust proof oil; And damp walls may increase the humidity of the warehouse, leading to bearing corrosion.
2. Storage Method
Horizontal Placement: For large double row tapered roller bearings, they should be placed horizontally on wooden supports to prevent elliptical deformation of the bearings.
. Vertical storage may result in uneven weight distribution of bearing rings and rolling elements, leading to deformation.Avoid multi-layer stacking: Bearings cannot be stored in multiple layers to prevent them from falling and being damaged.
. Especially for large bearings, multi-layer stacking may cause them to be damaged due to excessive pressure.Keep away from the ground: Bearings should be placed on wooden supports 0.2 meters or more away from the ground, away from areas such as heating pipes, sinks, and water pipes that may produce moisture.
.III. Packaging Protection
Keep the original packaging: Bearings are usually coated with an appropriate amount of rust proof oil and packaged with rust proof paper when they leave the factory.
. Before installation and use, try to keep the original packaging intact and avoid removing the packaging too early to expose the bearings to corrosion or contaminants.Repackaging: If bearings need to be unpacked, inspected, or cleaned before being stored again, clean plastic film or polyethylene composite paper should be used for single set packaging, and ensure that the packaging material has good rust prevention performance.
.Avoid coexisting with corrosive substances: Bearings should be stored separately. When they must be stored together with other items, the other items stored together must not be chemicals such as acids, alkalis, salts, etc., to avoid corrosion of the bearings.
.Fourth, Regular Inspection and Maintenance
Regular Inspection: The stored bearings should be inspected regularly, including checking whether the packaging is intact and whether the bearings are corroded.
. If rust or packaging damage is found on the bearings, it should be promptly dealt with and the packaging replaced.Regular cleaning and oiling: For bearings stored for a long time, they should be cleaned regularly and coated with new rust proof oil or grease.
. The cleaning process should be divided into two steps: rough cleaning and fine cleaning, and neutral, water free diesel or kerosene should be used as the cleaning agent. After cleaning, anti rust oil or grease should be immediately applied to the bearings to prevent rusting.