滚珠丝杠是什么？

Overloaded ball screws abroad refer to ball screws that are subjected to loads beyond their rated capacity. This can cause excessive wear and tear on the ball screw components and can lead to premature failure. Overloading can occur due to a variety of factors, such as incorrect selection of ball screw size or pitch, excessive speed or acceleration, or inadequate lubrication. To avoid overloading, it is important to carefully select the appropriate ball screw for the application and to ensure that it is operated within its rated capacity. Regular maintenance and lubrication can also help to prevent overloading and prolong the life of the ball screw.

滚珠丝杠的临界转速会受到哪些因素的影响？

滚珠丝杠的临界转速是指滚珠丝杠在高速旋转时，由于离心力的作用，滚珠会脱离轨道产生滑动，导致滚珠丝杠失去精度和稳定性的最大转速。临界转速的大小取决于滚珠丝杠的结构、材料、制造工艺等因素，一般在几千转每分钟到数万转每分钟之间。