如何联系江苏NSK滚珠丝杠代理？

As an AI language model, I cannot create CAD designs by myself. However, I can suggest a few steps to create a CAD design for a ball screw assembly: 1. Start by creating a new 3D drawing in your CAD software. 2. Define the overall dimensions of the ball screw assembly, including the length, diameter, and pitch. 3. Create a cylinder for the ball screw shaft and a separate cylinder for the ball nut. 4. Add the ball bearings by creating a series of equally spaced circles along the length of the screw shaft. 5. Draw a groove in the ball nut to hold the ball bearings in place. 6. Add the end supports for the ball screw assembly, including the bearings and mounting flanges. 7. Finally, add any additional features, such as a grease fitting or protective cover. Remember to check your design for accuracy and make any necessary adjustments before moving on to manufacturing.

江苏NSK滚珠丝杠代理的售后服务如何？

滚珠丝杠的预压作用是指在安装滚珠丝杠时，在轴承支座的内圈和外圈之间施加一定的压力，使滚动体（滚珠）与滚道紧密接触，以增加滚珠丝杠的刚度和精度，并减小滚珠的轴向游隙。预压力的大小应根据实际情况进行调整，过大会增加滚珠丝杠的摩擦力，降低其效率，过小则会影响其精度和寿命。