Linear guidance : all you need to know

🔗 Mechanical transmission

Date of publication : 25/12/2023

Reading time : 3 Minutes


Discover linear guides, precision motors that transform movement into a fluid, controlled experience.

What is a guide rail?

The three watchwords of linear guidance are “Silence, regularity of movement and precision.” The example most remarkable application of control linear is without one doubt the medical scanner. The patient is lying down on a table examination mobile which moves in a circle speed constant. This table slides with the help of a guide linear advance which allows a much quieter movement,plus precise andplus fluid.In short, Linear guidance is a device that allows objects or loads to be moved. Controller linear is therefore an element of order of translational movements.

heavy load linear guide 

The heavy-duty linear guide rail is a device widely used in the industrial sector. Depending on the area, heavy-duty linear guide rails can be manufactured in different dimensions. Useful for the construction of systems and the automatic (or not) movement of heavy loads, the heavy-duty linear guide rail is essential equipment in the industrial sector.

There are two types of heavy-duty linear guide rail: those with ball sliders and those with roller sliders. Both are made up of two parts: the rail and the pad. Among the characteristics of guide rails

  • Production : Made from a cold rolling process, the high capacity linear guide rail is typically made of high-strength steel to ensure corrosion protection.
  • Dimensions : High load linear guide rail is offered in various configurations and dimensions. Some linear guide devices are available in miniature versions, suitable for use in confined spaces.

cylindrical linear guide

Linear cylindrical guides have been used for a very long time as machine elements for carrying out linear movements, and have proven themselves in industrial practice. They can, for example, be used as adjustment units during automation tasks.

Linear cylindrical guides are robust, reliable, efficient, and very economical thanks to their simple structure. The construction of the cylindrical guides is based on hardened guide shafts combined with different linear ball bearings or linear ball bushings, and opens up numerous possible variations. Plain bearings are also part of the range ITAFRAN.

Not only the bearing type, but also the guide elements can be selected from a wide range. Mounting the guide shaft on different shaft supports and using open guide elements opens up further alternatives. Cylindrical shaft-supported guides offer an economical and robust alternative to linear guideways with profile rails.

What is the difference between NS / NH guidance?

Movement performance : The new recirculation component facilitates the circulation of steel balls.

Lightness : The ball slide is manufactured to be approximately 20% lighter than that from the LU series thanks to the application of a resin on part of its body.

Reduction of noise intensity : Resin components applied in the ball circulation circuits reduce the collision noise between the steel balls and the inner wall of the circulation circuits.

Excellent protection against dust : It is designed to minimize the space between the side of the rails and the internal walls of the slide, and prevent foreign objects from entering the ball slide. The structure is designed to avoid dust production.

High resistance to corrosion : High corrosion resistance martensitic stainless steel is incorporated as standard to provide excellent corrosion resistance.

Easy to manipulate : The safety design includes a retainer that prevents steel balls from exiting the ball slide, even when it is removed from the rail.

What are the pads used for in linear guidance?

The skate moves on linear rails which are installed on a work surface. The slider moves forward and backward along the linear rail. Recirculating ball bearings inside the pad which is in contact with the rail facilitates movement within the rail.

pattern NAS

NAS skates consist of a metal or plastic body, with integrated ball bearings. Ball bearings allow the skate to slide along the guideway.

NAS skates offer a number of benefits, including:

  • Accuracy: NAS skates offer better precision than NAH skates. This is because ball bearings have lower friction than roller bearings.
  • Reliability: NAS skates are more reliable than NAH skates. This is because ball bearings are less susceptible to contamination than roller bearings.

NAS skates have a few disadvantages, including:

  • Cost: NAS skates are generally more expensive than NAH skates.
  • Noise: NAS pads may be noisier than NAH pads.

catfish NAH

NAH skates consist of a metal or plastic frame, equipped with integrated roller bearings that facilitate movement along the guide track.

In terms of benefits, NAH pads stand out because they are generally more affordable in cost compared to NAS pads, and they can offer quieter operation.

However, they have some drawbacks. When it comes to precision, NAH skates perform worse than their NAS counterparts due to the increased friction of roller bearings compared to ball bearings. Additionally, their reliability is lower, attributable to the increased sensitivity of roller bearings to contamination compared to ball bearings in NAS skates.

Choosing the appropriate pad type depends on the application requirements. If precision is a priority, NAS skates are the best choice. If cost or quietness are priorities, NAH skates may be a better option.

Cheap linear guidance

Linear guidance, where to find it? When they need to be replaced or when an application requires the installation of specific guidance, There are stores specializing in the sale of rails like ITAFRAN. You will find the biggest guide brand NSK. By using the search tool integrated on the site and its various filters, you can easily find the ball bearing which will meet all your mounting and application needs.

Mini summary