Linear rail

The challenge of the day? Implementation of linear motion inside of a cleanroom. This type of issue is particularly and uniquely challenging since motion---whether sliding or rolling manufactures some particles. When the person implementing such systems inside the cleanroom becomes knowledgeable about the sources that cause the generation of such particles making use of clever design options is possible in putting together a complete linear motion system. The preceding information provides the reader with how to adapt linear rail systems inside the cleanroom---with optimal efficiency.

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The Best Way to Get Around Contamination of Lubrication


Lubrication reduces friction and particle generation between surfaces. Lubrication also traps the particles---providing prevention of the scattering of the particles, within the environment of the cleanroom. Lubrication though can cause contamination in 2 significant ways. The elements making up the lubricant may have a tendency to out-gas allowing release of vapours of oil and micro-sized droplets into the surrounding air. In order to avoid the issue, the cleanroom-approved lubricants, possessing lower out-gassing properties, and a reduced concentration of particles are used.


Seals and Covers are the Cleanroom Manager's Metaphorical Best Friends


The components that rotate by way of design can spew grease, and cause a great deal of degradation to the environment. It is very necessary to keep contamination as mentioned within the preceding descriptive away from crucial areas of work. Seals and covers are most useful. Seals and covers provide protection of the motion oriented components addressing issues of contamination. The primary purpose of seals and covers inside the cleanroom is to keep the contamination generated by the system inside of it. In order to achieve it non-contact or very low friction seals are good selections. Bearing seals not making contact with raceways will assist in keeping lubrication and particles caused by friction, within the linear rail system---which in turn, makes it possible to avoid further contamination. The static covers for linear actuators provide another barrier against particles flowing about, inside the cleanroom.


Orientation of Components Makes for a World of Difference


The orientation of the components---vertical, horizontal, and so on and so forth is implemented, in such a way, providing minimisation of the force on the system. However, in a cleanroom environment, mounting orientation impacts the release of particles inside the cleanroom environment. This issue is a greater issue than the dynamic of the system. The solution is to keep the moving components below the area of work. A right side-up mounting orientation provides the consumer with a good way of trapping particles inside the system.


Best Materials for the Cleanroom Aluminium and Steel


The preferred materials inside the cleanroom remain PVC and stainless steel. However, when it comes to linear motion, the two materials sometimes are not the correct choices, inside the cleanroom. The linear rail systems must provide the consumer with decent load carrying capabilities and a lengthy span of life. The materials most useful are aluminium and with regard to certain applications steel. When the customer makes use of aluminium it is anodised in order to prevent contamination. The contamination is caused by oxidation. Steel elements are treated with a coating suitable for the cleanroom, such as Nickel plating. The hardware, inclusive of fasteners and screws, are made of stainless steel. If the hardware is black-oxide coated they should be replaced with stainless steel hardware.


Vacuum Purges are Essential with Regard to Moving Parts


The best way to keep the cleanroom safe from contaminants is to assure the particles never make it into the environment. The best way to achieve the preceding objective is by way of a vacuum purge on the system or actuator. The most apparent sources of particle manufacture include the rolling and sliding surfaces of the linear guides and that of the ball screws. The motor coupling and the cable carrier joints also produce particles. The vacuum purge is performed after a proper analysis is performed, relative to all of the components of movement. The vacuum purge of a linear rail system makes cleanroom compatibility with the linear rail system possible. Motion does not need be the enemy of the cleanroom. When understanding where the particles originate and providing designs that correspond to the cleanroom friendly linear motion systems can be set up inside the environment of the cleanroom---successfully.