Selecting Lubricants for Pneumatic Cylinders
The pneumatic and cylinders that drive industrial machines often have to stroke hundreds of times a day, every day. With such challenging duty-cycles, these air cylinders have lubrication requirements above and beyond what most commodity greases can provide.
These requirements include:
High pressure tolerance. Internal air pressures in pneumatic cylinders, which routinely reach 250 psi, can cause the lubricant to separate and migrate. High-pressure tolerance helps the grease stay where you put it and prevent any metal-on-metal contact within the cylinder.
Long-term mechanical stability. Lubricants with high mechanical stability resist changes in viscosity and lubricity over time, which helps air cylinders perform consistently with each and every stroke.
Corrosion and heat resistance. A key role for lubricants in industrial settings is sealing out moisture and corrosive chemicals. Air cylinder lubricants frequently operate in high-temperature settings as well.
Excellent dispersion. The tight internal clearances within pneumatic cylinders require lubricants that spread in thin, even layers.
Magnalube-G for air cylinders. Magnalube-G has a number of properties that make it an ideal fit for pneumatic and cylinder applications. Its proprietary blend of high quality base oils, ` thickener and fluoropolymer additives resist separation and maintain lubricity even under high pressures. This formulation also has excellent dispersion properties.
Magnalube-G also ranks among the most mechanically stable and long-lasting greases of its class (NLGI 2), thanks partly to its proprietary fluoropolymer additives. These polymers impregnate metallic surfaces to provide a persistent lubricity that will outlast the base oil. Compared to standard white lithium greases, Magnalube-G will requires far fewer applications over the life of a typical air cylinder.
Finally it’s resistant to both corrosion and heat. Fluoropolymers are among the most chemically resistant materials in industry. And Magnalube-G has a 500ºF dropping point, which allows it to beat the heat.
Magnalube-G is used in a wide variety of air cylinder types–including single acting cylinder, double acting cylinder, rotary cylinder, and rodless cylinder. For help with your pneumatics application or a free sample of our pneumatics-friendly lubricant, contact Magnalube technical service.