How to determine the model of reducer coupling

Clarify usage requirements

• Transmitting torque: This is a key factor in determining the coupling model. It is necessary to calculate the required transmitted torque based on the rated power speed of the reducer and the maximum torque during operation. Generally speaking, a certain safety factor must be considered to ensure that the coupling can reliably transmit torque in actual work and avoid overload and damage caused by insufficient torque.

• Speed ​​requirements: The allowable speed of the coupling should be greater than the actual working speed of the reducer. Different types of couplings perform differently when rotating at high speed. For example, some couplings may cause greater deformation or vibration due to the effect of centrifugal force, so you need to choose the appropriate coupling type and model according to the speed.

• Installation space: The installation space limits the size and structural form of the coupling. It is necessary to measure the distance between the reducer output shaft and the input shaft of the connected device to determine the maximum Dimensions of the coupling and installation method. For example, in situations where space is compact, it may be necessary to choose a compact coupling, such as a diaphragm coupling.

• Connection method: Determine the connection method of the coupling and the output shaft of the reducer and the input shaft of the connected device. Common connection methods include key connection, spline connection, expansion sleeve connection, and other connection methods have different characteristics and scope of application. They need to be selected according to the structure and usage requirements of the shaft.

Consider the work environment

• Working temperature: If the reducer is operating in a high or low temperature environment, it is necessary to choose a coupling that can adapt to the corresponding temperature range. For example, in a high temperature environment, the coupling of the rubber elastic element may affect the performance due to rubber aging. At this time, the coupling of the metal elastic element or other high-temperature resistant coupling should be selected.

• Wet or corrosive environment: In a wet or corrosive medium, the material of the coupling needs to have good corrosion resistance. For example, a stainless steel coupling or anti-corrosion coupling can be selected to prevent damage to the coupling due to corrosion.

• Vibration and impact: If there is a large vibration and impact during the working process, couplings with good buffering performance and vibration absorption capabilities should be selected, such as elastic column pin couplings and tire couplings, which can effectively absorb vibration and impact energy, protect the reducer and the shafts and bearings of the connected equipment.

Select coupling type and model

• Select according to the transmission torque and speed: Refer to the performance parameter table of the coupling, based on the calculated transmission torque and the speed of the reducer, initially select the appropriate coupling type and model. For example, for situations where the transmission torque is large and the rotation speed is high, you can consider choosing a toothed coupling; for situations where the transmission accuracy is high and there is no relative sliding, a rigid coupling can be selected.

• Determine in combination with the installation space and connection method: In the initially selected coupling type, the specific model and specifications are further determined according to the actual installation space and connection method requirements. For example, if the installation space is limited and the connection accuracy is required, the diaphragm coupling can be selected, and the appropriate diaphragm coupling model can be selected according to the shaft diameter and installation size.

• Adjustment is taken into account working environment factors: Make necessary adjustments to the selected coupling model according to factors such as temperature, humidity, corrosion and other factors of the working environment. For example, in a dusty environment, a closed coupling can be selected to prevent dust from entering the interior of the coupling and affecting its performance and life.