What should be noted in the repair of bearing seats?

The manufacturer of sliding bearing pedestals understands that sliding bearing pedestals are large and special bearing pedestals that can withstand comprehensive loads and special structures, with features such as compact structure, sensitive rotation, and easy maintenance. Where there are bearings, support points are needed. The inner support point of the bearing is the shaft, and the outer support is commonly referred to as a bearing seat. The editor will introduce the maintenance precautions for the bearing pedestal.

The assembly process of the sliding bearing is as follows:

1. Mark the upper and lower bearing shells, coloring the back, and contacting the bearing cover and bearing seat respectively. The contact point should be greater than 6 points/25 mm2.

2. Drill holes on the upper bearing shell and bearing cover;

3. Dig an oil groove on the inner wall of the upper bearing bush;

4. Drill down the bearing bush positioning hole on the bearing pedestal and install the positioning pin. The length of the positioning pin should be 3mm thicker than the lower bearing bush;

5 At the positioning pin_ Coat the upper end with red lead powder, install the lower bearing pad on the bearing seat, and make the red lead powder of the positioning pin imprint on the surface of the lower bearing pad. Drill positioning holes on the back of the lower bearing pad according to the rubbing;

6. Install the lower bearing shell in the bearing block, and then install the four double-headed studs on the bearing block, pad with adjusting shims, and install the upper bearing shell and bearing cover. Then, repeatedly scrape and grind the process shaft to make the contact point reach 6 points/25mm, and the process shaft rotates in the bearing without jamming;

7. Install and install the shaft to be assembled, adjust the shims, assemble the bearing cover, slightly tighten the nuts, and evenly tap the top of the bearing cover several times with a wooden hammer to better position the bearing cover. Tighten all nuts with the same tightening torque. After repeated scraping and grinding, the shaft should be able to rotate easily and freely within the bearing bush without obvious clearance, and it is qualified when the contact point is at 12 points/25mm2;

After the adjustment is qualified, remove the bearing bush, clean it, reassemble it, and install the oil cup.

Application of cooling systems for heavy duty bearing pedestals. When used correctly, the cooling water for the bearing seat not only extends the service life of the bearing seat, but also improves production efficiency. The material of the bearing block is generally made of special bearing block steel through various treatments, and even good bearing block steel has its use limits, such as temperature. In use, if the mold temperature is too high, it is easy to cause cracks on the surface of the mold core as soon as possible, and some bearing seats may even have large areas of cracks when the mold temperature is above 2000 molds. Even if the temperature of the bearing seat is too high during production, the mold core will change color, even reaching 400 degrees or more after measurement. When such a temperature is subjected to mold release agent chilling, it is easy to crack, and the produced product is also prone to deformation, strain, and mold adhesion. When using cooling water for the bearing pedestal, the use of mold release agents can be greatly reduced, so operators do not use mold release agents to reduce the temperature of the bearing pedestal. Its advantages are effectively extending the service life of the bearing seat, saving the die casting cycle, improving product quality, reducing mold adhesion, strain, and aluminum adhesion, and reducing the use of release agents. It can also reduce the loss of the ejector pin and core caused by overheating of the bearing pedestal temperature.

Traditional methods generally use machining after surfacing for repair, while surfacing can cause the surface of the component to reach a high temperature, causing deformation or cracking of the component, and obtaining dimensions through machining can greatly prolong downtime. Using polymer composite materials for on-site repair, there is no thermal impact, and the repair thickness is not limited. The wear-resistance of the product and the concessions that metal materials do not have ensure a 100% contact fit at the repair site, reduce the impact and vibration of the equipment, and avoid the possibility of wear. Method of on-site repair to avoid machining.