FAQ Page

CORE PNEUMATICS

Rodless Cylinders

Unlike Conventional Pneumatic Cylinders, Rodless Pneumatic Cylinders can provide equal force and speed in both directions.
All pneumatic cylinders suffer with a symptom known as “Slip Stick”. Slip Stick is the term given to the situation where by the friction of the piston seal causes the piston / shuttle to judder. By fitting Rodless Cylinders with high viscosity grease, speeds of less than 5mm / second can be achieved without slipstick.
Rodless cylinder positioning can be influenced by the type and position of the valve / valves being used to control them. Optimum response and subsequent stopping accuracy can be increased by using either 2) 3/2 Normally Open Valves or 1) 5/3 All Ports Open Valve.

Linear Rail and Guides

PMI offer an SL lubricator which is a purpose designed oil reservoir fitted with a high density fibre interior which offer a constant federate of lubricant onto the raceway.
The recommended viscosity of oil to be used for lubrication is 30 – 150 cst.
Grease Nipples should be fitted to allow lubrication of carriages.
Boxed Carriages supplied with linear rails have only assembly grease fitted and appropriate lubrication should be applied prior to running.
Boxed Carriages are supplied with a plastic mandrel, this mandrel should be used every time a carriage is removed / refitted to the rail.
When storing linear rails, enclose them in pre-lubricated sleeves and store in a horizontal position avoiding high temperature, low temperature and high humidity.
All linear rails are supplied with plastic or metal caps, these caps should be fitted to cover the bolt hole and to prevent potential build-up of foreign matters.
Contamination protection is fundamental when Linear Rails & Carriages are used in certain enviroments. Additional scrapers of verying materials can easily be fitted to carraies as can low friction scrapers.
In order to ensure linear rail mounting is optimised, the correct tightening to specific toque’s is highly recommended.