FAQ Page

CORE PNEUMATICS

Rodless Cylinders

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 MOTION

Linear Rail and Guides

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.
Menu