Diaphragm coupling does not require lubrication

　　Diaphragm couplings rely on metal diaphragms to transmit torque and absorb deformation caused by misalignment. There is no relative movement between parts and there is no friction/wear, so it does not need lubrication, which is in line with the development direction of oil-free process equipment.Gear coupling is a rigid movable coupling. It relies on the relative slippage between the tooth surfaces to compensate for the misalignment of the two shafts. Therefore, the gear coupling should be lubricated, and the lubrication condition determines the gear coupling The key to good or bad work.Especially in high-speed operation, it appears to be prominent, such as the separation and leakage of oil under the action of centrifugal force, as well as the selection of lubricating oil, often because the lubrication design uses the bearing lubricating oil of the connected machine, rather than the appropriate load capacity. Gear lubricants.
　　Coupling is a component that connects two shafts axially and transmits torque and motion, and has the ability to compensate for the offset of the two shafts.On this basis, the coupling must be concentric.From a mechanical point of view, the coupling is subject to force. The motor drives the coupling to rotate after being powered on, and then the coupling drives the device to rotate.However, if the coupling is concentric, the power consumption of the motor is normal, and the transmission efficiency will be very high; if the power loss increases when the coupling is not concentric, the transmission efficiency will be reduced, and the current of the motor will naturally increase. The consequences of the motor may be burned.
　　Therefore, the lubrication problem of high-speed gear couplings is particularly prominent.On the other hand, the wear caused by the relative slippage of the tooth surface will cause a series of problems such as sludge and imbalance.Therefore, although gear couplings were once the choice for high-speed and high-power applications, with the emergence and development of diaphragm couplings, gear couplings have gradually faded out.