For the reliability and working environment of the coupling, coupling manufacturers usually use metal components that do not require lubrication. The coupling is more reliable; the performance of the coupling that requires lubrication is easily affected by the degree of lubrication, and may polluted environment.

　　Couplings containing non-metallic components such as rubber are more sensitive to temperature, corrosive media and strong light, and are prone to aging.The size and nature of the torque to be transmitted and the requirements for the buffering and damping function.For example, gear couplings can be used for high-power and heavy-duty transmissions; for severe impact loads or transmissions that require the elimination of shaft torsional vibration, tire couplings and other couplings with high elasticity can be selected.

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