The article considers the test bed simulation stress loads on the sucker rod pump drive. Conducting detailed experimental studies of the operation of the sucker rod pumping unit is a complex technological task requiring significant labor and material costs. The article proposes a method of mechanical simulation of loads on the horsehead, based on the analogy between elastic deformations in the rod string during pumping downhole products and spring range with concentrated mass. A test bed for physical simulation modeling stress loads on the sucker rod pump drive, including a conventional pumping unit and the load simulator on the horsehead been developed. A mathematical model of the test bed based on second-order linear nonuniform differential equation, describing the elastic deformation of the spring has been developed. It has been shown, that configuration of model dynamograms obtained in the test bed conditions are in good agreement with the actual oilfield dynamograms configuration of the sucker rod pumps operation. The influence of the parameters of the test bed (weight of loads, spring rate) on the formation features dynamic loads on the horsehead has been analyzed. It has been shown, that the gain of the first load, simulating the weight of the rod string, leads to increase in both minimum and maximum horsehead loads in proportion to the growth of the weight of load, taking into account dynamic vibratory; the increase in mass of the second load, simulating the weight of a liquid and, accordingly, dry friction force, acting in a pair of «clamp - rod», determines the proportional increase in maximum and decrease in minimum load on the horsehead taking into account the increasing dynamic vibrational loads; the length of the load and unload intensity dynamogram of the sucker rods regular increases with increasing mass of the second load and a decrease in the spring rate, equivalent reducing the diameter of the sucker rods or increasing the diameter of the plunger and the length of the rod string.