热功率是选用齿轮减速器时需要考虑的重要性能指标，热功率的大小决定了齿轮减速器在热平衡温度下工作的功率利用率。提高热功率有利于高齿轮减速器的工作效率，减少能源的浪费。推导了单级齿轮减速器试验台的效率计算公式，用试验方法对减速器的热功率进行了测算，开发了具有良好散热效果的板块式和列管式散热装置，在此基础上，从齿轮减速器设计、制造和润滑等方面分析了提高齿轮减速器热功率的措施。

Heat-power is an impartment performance index to choose the gear reducer. The working efficiency of the gear reducer lies on the value of the heat-power when working with the temperature at which heat balance is achieved. Raising Heat-power will benefit working efficiency, and reduce the waste of energy sources. The formula to calculate efficiency is deduced, and the heat-power is tested by way of experiment. The heat-radiating equipments with the structures of plank-lumped and pipe-ranked are developed. On the basis of this, the methods are brought forward to raise heat-power of gear reducers considering the factors of designing, manufacturing and lubricating.