How to choose linear guide

determine the rail width

The rail width refers to the width of the rail. Track width is one of the key factors determining the load size. Some brands only produce 45 specifications, and some small manufacturers may only reach 30. Futures products also have 85, 120, etc., but most manufacturers do not produce.

Determine the track length

This length is the total length of the track, not the stroke. Full length = effective stroke Slider spacing (more than 2 sliders) Slider length × number of sliders Safety strokes at both ends. If a guard is added, the compression length of the shields at both ends is added. It should be noted that in advance, the larger length of the whole guide rail of the brand of the brand is required. If the length exceeds this length, it needs to be docked. Most manufacturers have a total length of 4000 (micro-track is generally 1000), and some are 3000, which is related to the processing equipment of the manufacturer. Interface drawings are better provided if docking is required and the user wants to machine the mounting holes in the machine beforehand. Another point, please pay special attention to the fact that the mounting hole spacing on the rail is fixed. The user should pay attention to the position when determining the rail length. For example, the rail of 15 is 600. If you do not tell the supplier the required end size, the general arrival state is 10 mounting holes, the distance between the two ends of the rail to the center of each closer mounting hole is 30, 30, but it may be other sizes. Each brand has slightly different shipping regulations for the end dimensions, and most of them are equal by default. Another point, the length of the guide rail error, the general brand default 2000 below ± 1 ~ 2mm, 2000 ~ 4000 ± 2 ~ 3mm, if the user requirements are more accurate, it is better to indicate the error value or provide drawings on the order contract. In this case, the supplier may charge an additional processing fee.

Determine the slider type and quantity

The commonly used sliders are two types: flange type and square shape. The former is lower in height, but wider, the mounting hole is through the threaded hole, the latter is a little higher and narrower, and the mounting hole is a threaded blind hole. Both have short, standard and extended types (some brands are also called medium load, heavy load and heavy load), the main difference is the length of the slider body (metal part), of course, the hole of the mounting hole The spacing may vary, and most short sliders have only 2 mounting holes. The number of sliders should be determined by the user through calculation. Only one is recommended here: less to be able to carry, more to install. The slider type and number and the width of the rail constitute the three elements of the load size.