Packaging of rolling bearings

Bearing packaging includes inner packaging and outer packaging.

After the bearing is manufactured and inspected as qualified, it shall be cleaned and rust proof, and then put into the inner package to achieve the purpose of waterproof, moisture-proof, dust-proof, impact proof, maintaining the quality and accuracy of the bearing, and facilitating the use and sales.

The inner packaging of bearings is divided into three categories according to the rust prevention period:

① Short rust proof packaging: the rust proof period is 3-6 months. It is applicable to bearings that are shipped in large quantities to the same subscriber and put into use in a short time. By agreement of both parties, simple packaging is adopted based on the principle of convenient use.

② General rust proof packaging: one year rust proof period, suitable for general purpose bearings.

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

The inner packaging materials of the bearing include polyethylene plastic cylinder (box), kraft paper, plain and corrugated polyethylene composite paper, paper box, polyethylene or polyethylene plastic film, nylon fastening belt or plastic braided fastening belt, waterproof high-strength plastic belt, linen bag, etc. The above materials shall be qualified in the corrosion resistance test.

The general materials and requirements for the outer packaging of cylindrical roller bearings are as follows:

① Double corrugated paper box, the total weight (gross weight) of each box shall not exceed 25kg, and the outside of the box shall be bound with plastic straps;

② Nail board box (wooden box), with the total weight of each box not exceeding 30kg, and the outside of the box is bound with blue steel belt;

③ Calcium plastic corrugated box, the total weight of each box is not more than 25kg, and the boxes prefer to be bound with plastic straps.

When the bearing products with inner packaging are put into the box, plastic bags or plastic films shall be lined in the box first; If there is any space in the box, it needs to be filled with dry materials such as corrugated paper blocks and paper scraps.