How are linear guideways generally selected?

How are linear guides generally selected? 1. Determine the track width

Rail width refers to the width of the slide rail. Rail width is one of the key factors that determines its load size. Some manufacturers only produce up to 45 specifications, and some small manufacturers may only produce up to 30 specifications. There are also futures products such as 85, 120, etc., but most manufacturers do not produce them.

2. Determine the rail length

This length is the total length of the rail, not the stroke. Total length = effective stroke + slider spacing (more than 2 sliders) + slider length × number of sliders + safe strokes at both ends. If a protective cover is added, the compressed length of the protective covers at both ends needs to be added. It should be noted that you should ask in advance the maximum length of the entire guide rail of this specification. If it exceeds this length, it needs to be used for docking. The entire length of most manufacturers is 4000 (micro rails are generally 1000), and some are 3000, which is related to the manufacturer's processing equipment. If docking is required and the user wants to process mounting holes on the machine in advance, please provide the interface drawing. Another point please pay special attention to. The distance between the mounting holes on the guide rail is fixed. Users should pay attention to the position when determining the rail length.

3. Determine the slider type and quantity

There are two commonly used sliders: flange type and square. The former is lower in height but wider, and the mounting holes are through-threaded holes. The latter is taller and narrower, and the mounting holes are threaded blind holes. Both are divided into short type, standard type and extended type (some *** are also called medium load, heavy load and super heavy load). The main difference is that the length of the slider body (metal part) is different, and of course the mounting holes. The hole spacing may also be different. Most short slides only have 2 mounting holes. The number of sliders should be determined by the user through calculation. Here is only one recommendation: as few as can be carried and as many as can be installed. The type and number of sliders and the width of the slide rails constitute the three elements of the load size.