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How to remove the coupling
Couplings are commonly used parts in mechanical transmission, and couplings often need to be disassembled and assembled during equipment maintenance. If you do not master the disassembly and assembly methods of the coupling, it is easy to cause damage or damage to the coupling. Everyone introduces some common methods of coupling disassembly!
Coupling
The process of disassembling the coupling usually first disassemble the connecting bolts. Because the thread surface is easy to deposit grease, it is very difficult to disassemble the bolts with serious corrosion. The disassembly of the connecting bolts must choose suitable tools, because the outer hexagon or inner hexagon of the bolt is affected. The force surface has been slipped and damaged, making it more difficult to disassemble.For bolts that have been rusted or with a lot of grease stains, solvents (such as rust loosening agent) are often used to spray the joints of the bolts and nuts to allow the solvent to penetrate into the threads, so that it will be easy to disassemble.
If the bolts cannot be removed, the heating method can be used. The heating temperature is generally controlled below 200°C. It uses the thermal expansion and contraction properties of the material to heat the containing part, so that the mating part loses the interference under the temperature difference condition, so as to achieve Disassemble.At the same time, the gap between the nut and the bolt is enlarged by heating, and the rust is also easy to fall off, making the bolt disassembly easier.
If none of the above methods work, the coupling manufacturer recommends destroying the bolts, cutting or drilling off the bolts, and replacing them with new bolts when assembling.The new bolts must be consistent with the original bolt specifications. The newly replaced bolts used for high-speed equipment couplings must also be weighed so that the new bolts have the same weight as the connecting bolts on the same set of flanges.
In the process of coupling disassembly, the most difficult task is to remove the hub from the shaft.For the hub of the coupling, a three-legged puller or four-legged puller is generally used for disassembly.The selected puller should match the outer dimensions of the hub, and the right-angle hooks of each leg of the puller should be properly combined with the rear side of the hub, so that the imagination of slippage will not occur when exerting force.This method is only used for the disassembly of hubs with relatively small interference. For hubs with relatively large interference, heating methods are often used, or at the same time with hydraulic jacks for disassembly.for reference only.
Coupling
The process of disassembling the coupling usually first disassemble the connecting bolts. Because the thread surface is easy to deposit grease, it is very difficult to disassemble the bolts with serious corrosion. The disassembly of the connecting bolts must choose suitable tools, because the outer hexagon or inner hexagon of the bolt is affected. The force surface has been slipped and damaged, making it more difficult to disassemble.For bolts that have been rusted or with a lot of grease stains, solvents (such as rust loosening agent) are often used to spray the joints of the bolts and nuts to allow the solvent to penetrate into the threads, so that it will be easy to disassemble.
If the bolts cannot be removed, the heating method can be used. The heating temperature is generally controlled below 200°C. It uses the thermal expansion and contraction properties of the material to heat the containing part, so that the mating part loses the interference under the temperature difference condition, so as to achieve Disassemble.At the same time, the gap between the nut and the bolt is enlarged by heating, and the rust is also easy to fall off, making the bolt disassembly easier.
If none of the above methods work, the coupling manufacturer recommends destroying the bolts, cutting or drilling off the bolts, and replacing them with new bolts when assembling.The new bolts must be consistent with the original bolt specifications. The newly replaced bolts used for high-speed equipment couplings must also be weighed so that the new bolts have the same weight as the connecting bolts on the same set of flanges.
In the process of coupling disassembly, the most difficult task is to remove the hub from the shaft.For the hub of the coupling, a three-legged puller or four-legged puller is generally used for disassembly.The selected puller should match the outer dimensions of the hub, and the right-angle hooks of each leg of the puller should be properly combined with the rear side of the hub, so that the imagination of slippage will not occur when exerting force.This method is only used for the disassembly of hubs with relatively small interference. For hubs with relatively large interference, heating methods are often used, or at the same time with hydraulic jacks for disassembly.for reference only.
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