How to determine the heat dissipation requirements of hard-toothed RS87-7.27 helical gear reducer

To determine the heat dissipation requirements of the hard toothed RS87-7.27 helical gear reducer, it usually needs to be achieved through thermal equilibrium calculation. The specific methods are as follows:

• Calculate power loss : During operation of the reducer, power loss will occur due to gear meshing, bearing friction, oil agitation and other factors, and the lost power will be converted into heat.

• Calculate the heat dissipation power : The calculation of the heat dissipation power is related to the heat dissipation area A of the reducer, the heat dissipation coefficient K, and the ambient temperature 0 and the maximum operating temperature allowed by the reducer. The heat dissipation coefficient K is related to the heat dissipation method. During natural heat dissipation, the value of K is generally between 10-15W/(m²・K); if there is fan cooling, the value of K can reach 20-25W/(m²・K). The heat dissipation area A can be determined by calculating the surface area of the reducer case. For the case with the heat dissipation fins, the increased area of the heat dissipation fins needs to be considered.

• Thermal balance verification : According to the principle of thermal balance, when the reducer reaches thermal equilibrium, the power loss should be less than or equal to the heat dissipation power. If this condition is not met, it means that the reducer's heat dissipation capacity is insufficient, and measures such as increasing the heat dissipation area and increasing the heat dissipation coefficient (such as increasing fan cooling, using water cooling, etc.) need to be taken to meet the heat dissipation needs.

• Consider the correction coefficient : In actual calculation, some correction coefficients need to be considered, such as ambient temperature coefficient, altitude coefficient, installation method coefficient, etc. These coefficients can be determined by consulting relevant manuals or standards based on the use environment and installation method of the reducer. For example, when the ambient temperature is high, it is necessary to consider the influence of the ambient temperature coefficient on the thermal power and appropriately reduce the allowable power of the reducer.