Linear guide rail accuracy classification
Linear guides, also known as slide rails, linear guides, and linear slides, are used for linear reciprocating applications. They have a higher rated load than linear bearings, and can withstand a certain amount of torque, enabling high-precision straight lines under high load conditions. Sporty and efficient and durable,
A linear guide is a slot or ridge made of metal or other material that can withstand, secure, or guide a moving device or device and reduce its friction. Longitudinal grooves or ridges on the surface of the rail for guiding, securing machine parts, special equipment, instruments, etc.
The accuracy data of the linear guide is distinguished from the values of several indicators. Generally, there are tolerances for the height H, the pairs of heights H are mutually different, the width W is tolerance, and the width W is different from each other. The parallelism of the upper surface to the lower surface of the rail, the parallelism of the side surface of the slider to the side surface of the rail, and the linear accuracy of the length of the rail.
Of course, the linear guides have to be used specifically on those devices. The use of different guides for rails, installation, accuracy requirements, etc. are different. Usually the rail clearance, light preload, medium preload, generally at the beginning of the selection, it is determined that 1/3 of the rated dynamic load is the upper limit of the actual load. Therefore, it is generally added to the medium preload to ensure that there is no sinking. If the guide rail is used up and down, the guide rail is directly guided. How much the slider rises is related to the screw or other drive used, and it has nothing to do with the slide slider.
Based on the above data indicators, the grades of linear guides are generally classified into general grade, advanced grade, precision grade, ultra-precision grade and ultra-high precision grade. When we choose linear guides, we must first look at our own needs, and then choose the right linear guide according to your needs. In general, our needs are inseparable from the bearing capacity of the rails, which is often referred to as load, rail accuracy, rail size, rail mounting requirements and our cost.