What are the rust prevention periods for bearing inner packaging?

• 2025-03-03

Precision bearings such as cross roller bearings used in robots require good rust prevention and protection measures before assembly. Therefore, bearing manufacturers will provide good rust prevention inner packaging and strong protective outer packaging for the bearings when they leave the factory. There are various packaging forms according to different materials. What are the rust prevention periods for the inner packaging of bearings? What are the requirements for packaging methods?

1、 What are the rust prevention periods for bearing inner packaging

The packaging materials for bearings include polyethylene plastic tubes (boxes), kraft paper, plain weave and wrinkled polyethylene composite paper, paper boxes, polyethylene or polyethylene plastic film, nylon fastening tape or plastic braided fastening tape, high waterproof strength plastic tape, burlap bags, etc. All of these materials need to pass the corrosion resistance test, and can be divided into the following three types according to the rust prevention period:

1. Short term rust proof packaging: The rust proof period is 3-6 months, suitable for bearings that are shipped in large quantities to the same order and put into use in a short period of time. Through mutual agreement, simple packaging is adopted based on the principle of convenience.

2. General rust prevention period packaging: The rust prevention period is one year, suitable for general purpose bearings.

3. Long term rust proof packaging: rust proof period of two years, suitable for specialized and precision bearings.

2、 Requirements for anti rust inner packaging method of bearings

1. Micro bearings: Every 10-15 sets of bearings are packed into a plastic cylinder, and every 5-10 plastic cylinders are packed into a paper box (or bag or roll).

2. Small and medium-sized bearings: Multiple sets of bearings are wrapped with polyethylene film inside and kraft paper or polyethylene composite paper outside; Multiple sets of bearings are packed into a plastic cylinder (box); A single set of bearings is packaged in polyethylene film bags, folded or sealed at the bag opening, and then packed into a paper box.

3. Large bearings: After being individually packaged with polyethylene film or polyethylene composite paper, they are then packed into a paper box; Use polyethylene film bags, fold the bag opening in a single set, and then pack it into a cardboard box; Single set packaged in a specially designed plastic box; Single set three-layer wrapping packaging: the inner layer is wrapped with polyethylene film tape or composite paper tape, the middle layer is wrapped with fastening tape, and the outer layer is wrapped with waterproof permeable plastic tape.

4. Type bearing: single set of three-layer wrapped packaging (as above); Single four layer wrapping packaging: After the above three layers of wrapping packaging, wrap the outer layer with a layer of burlap tape.

5. Separable tapered roller bearings with an outer diameter of ≥ 150mm: Polyethylene film should be lined before packaging the inner and outer components, or the inner and outer components should be separately packaged.

6. Interchangeable cylindrical roller bearings with an outer diameter of ≥ 150mm: Due to the easy damage caused by complete packaging, they can generally be packaged separately with internal and external components.

What are the rust prevention periods for bearing inner packaging? The above is the content compiled and introduced by the Ouna editor, hoping to be helpful to everyone. Luoyang Ouna Bearing Co., Ltd. has a complete set of precision bearing manufacturing, processing, inspection, and packaging processes, which can provide customers with good anti rust inner packaging and precision of bearing use. If you need it, you can leave a message on our website or call customer service for detailed consultation.

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