Special attention should be paid to the details of using bearing seats
There must be only one fixed bearing on each shaft section. Other bearings must have non fixed ends to accommodate bearing shrinkage. If the lubricant is used, grease should be applied according to the previous proposal before fixing the upper half of the bearing housing. Some assemblies require two or more stabilizer rings.
The bearing pedestal upper part (top cover) should be inspected for burrs on the journal on the bearing pedestal upper part (top cover), thoroughly cleaned, oiled, and then placed in the bearing. If the oil is smooth, aggressive use of some sealant on the separation surface can prevent leakage in certain applications. Remove the film from the outer edge. Excessive sealant can compress the outer ring or seal the non stationary bearing. The two engagement pins will partially position the upper half of the bearing housing.
The top cover and base of the split bearing pedestal are not interchangeable. Each top cover and base must stop assembling its mating parts. Mark the mating parts before removal. Then install the lock washer and top cover bolt and tighten them to complete the assembly. The torque of the top cover bolts shall be as recommended by the manufacturer.
Special attention should be paid to the following points during the use of bearing blocks: the use of cooling systems for bearing blocks. When used correctly, split bearing seat cooling water not only extends the service life of the bearing seat, but also improves consumption efficiency. Bearing blocks processed by various processing methods are generally made of special bearing block steel.
No matter how good the bearing seat steel is, there are also restrictions on their use, such as temperature. In the application state of bearing pedestals, assuming that the mold temperature is too high, it is easy to cause cracks in the appearance of the mold core at an early stage. Some bearing pedestals have large areas of cracks before exceeding 2000 molds. Therefore, due to the excessively high temperature of the bearing block, the mold core of the bearing block changes color during consumption.
Through measurement, it reaches over 400 degrees. When this temperature encounters the chilling state of the release agent again, it is easy to crack, and the consumed product is also easy to deform, strain, and adhere to the mold. Using cooling water for the bearing block can greatly reduce the use of mold release agents, preventing operators from using mold release agents to reduce the temperature of the bearing block.
Its benefits lie in extending the life of the bearing seat, saving the die casting cycle, improving production quality, reducing the occurrence of mold sticking, strain, and aluminum sticking, and reducing the use of mold release agents. It can also reduce the loss of the ejector pin and core caused by overheating of the bearing seat.
During the initial consumption process of the bearing pedestal, the preheating of the bearing pedestal should be stopped to avoid sudden contact with hot metal liquid in the cold bearing pedestal, which can lead to cracks. For the bearing pedestal, a blowtorch, liquefied gas, and a mold thermometer with good conditions can be used. Compared to simple bearing housings, slow pressure injection preheating can be used.
Slide a 0.05mm (0.002 inch) feeler between the base and the device plane again to check whether the gap between the bearing pedestal and the device base can diverge. Please use shims. If shims are required to elevate, only shims that cover the entire plane of the bearing pedestal device can be used. If the gasket is short, the base will deform, the bearing ring will twist, and the service life will be shortened.
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