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Effect of Temperature Rise on Ball Screw
Usually in order to avoid cause any miscalculation of mechanical transmission, so when the ball screw operation, most of the temperature rise will affect the accuracy of mechanical transmission, especially for high-speed and high-precision machinery, which will affect the ball screw temperature rise of important factors. Here for you introduce temperature rise usually what the effects of a ball screw? The temperature rise factors are generally the most basic of the three: pre-pressure, lubrication, prestretching.

First, the pre-pressure effect

For the temperature rise can be increased when operation, but also in order to avoid any miscalculation of mechanical transmission system, it is very important to improve the rigidity of the nut, then at this time not only to improve the rigidity of the nut, of course, more important it is to make the nut's pre-pressure to reach a certain parameter level. While applying pressure still ensure to increase the thread friction torque.

Secondly, the lubrication effect

True affected by ball screw is, of course, lubricating oil, because oil is only part of the inner ball screw, in fact, suggest that everyone using lubricant oil as the ball screw lubrication, such as lithium soap grease decomposition can be better, the viscosity of the oil is chosen according to the speed of operation and working temperature. While at work of high-speed low-load operation is best to use low-viscosity oil, high and low load the use of oil in the end is different, so as to achieve the cooling effect.

Finally, the pretensioning effect

Temperature rise thermal stress effects will result in screw instant longer, although the length will not change, but length can calculated using the formula, too much pretension will burn support bearing, so we recommend the use of pretension value of less than 5 degrees Celsius; of course the large diameter should need big pretension, it will not lead to the support bearing because of overheating and burning.