The bed guard is designed to protect machine tool guideways, safeguarding the internal rigid guides, linear guides, ball screws, or drive gears from external corrosion and damage. It comes in various types, including: accordion guards and steel plate guards, which are used on guideways; and screw guards for ball screws, available in circular, square, and polygonal shapes, with different construction methods, such as wire-supported and stitched styles. Additionally, there are roller shutter guards and armor guards, among others.