The article presents the impact of variable operating conditions on the value of braking process delay for the progressive gears of PP16 type and the newly constructed CHP2000 gears. Tests were conducted in the regular working conditions with the application of mineral oil as lubricating agent. Values of delays were recorded for the loading of 400 and 1000 kg. This research study presents the recurrence plot analysis to investigate variability of received test runs. The results may be useful for testing new solutions brakes in varying conditions of service and may set new directions of research in the discussed topics.