Precautions for the use of stainless steel couplings


Stainless steel couplings are currently widely used mechanical equipment, but many users find that it is troublesome to disassemble the elastic coupling diaphragm of the coupling, and they don’t know where to start, and even cause damage to the coupling. The specific precautions for stainless steel couplings are as follows:

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(1) When removing the stainless steel couplings, don't hit directly with a hammer, but use a copper rod, and hit the coupling hub instead of the outer edge of the coupling, because it is easily damaged. The ideal way is to disassemble the coupling with a captive. For small and medium-sized water pumps, the coupling is easy to take off because of its small fit interference. For larger water pumps, the coupling and the shaft have a larger interference, so the coupling is heated when disassembling.
(2) When assembling stainless steel couplings, pay attention to the serial number of the key (for couplings with more than two keys). If hitting with a copper rod, pay attention to the hitting part. For example, when tapping on the end face of the shaft hole, it is easy to cause the shaft hole to shrink, so that the shaft cannot pass through; tapping on the outer edge of the opposite wheel will easily damage the straightness of the end face, which will affect the accuracy of the measurement when using a feeler gauge in the future. Spend. For couplings with large interference, they should be heated before installation.
(3) The specifications and sizes of the stainless steel coupling pins, nuts, washers and rubber pads are the same, so as not to affect the dynamic balance of the coupling. Corresponding marks should be made on the coupling bolts and the corresponding coupling pin holes to prevent wrong installation.
(4) Stainless steel couplings and shafts generally adopt transitional fits. There may be a small amount of interference or a small amount of clearance. For couplings with longer hubs, a looser transitional fit can be used because of the shaft hole. Longer, because the surface is rough and uneven, some interference will naturally occur after assembly. If it is found that the fit between the stainless steel couplings and the shaft is too loose, which affects the concentricity of the hole and the shaft, repair welding should be carried out. Punching or padding copper on the shaft is an expedient measure, not an ideal method.
The above are the precautions for the use of stainless steel couplings, I hope it will be helpful to everyone.

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