Standard_Parts_Catalogue

Page 1899 | 3.8 Adjusting, Moving with Guides, Spindles and Ball Rollers 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 Cage slip In the event of quick changes of direction and high acceleration forces, cage slip can occur in the worst case, especially with long ball cages. In these cases, the cage does not move synchronously at half the speed of the middle and inner slides. Instead it loses its correct position gradually due to sliding. In such cases an “idle stroke” may need to be moved in the front and back stop position of the slide, at a moderate speed and under slight load to reposition the cage. Temperature of use The temperature of use of telescopic slides is within the range of -20 °C to 100 °C and is determined primarily by the plastic and elastomer parts used in the slides. Depending on place of use and application, the user may have to check the function of the extensions if the temperature is at the limit. Slide materials, surfaces and corrosion protection The telescopic slides made by Ganter are manufactured out of high-quality steel or stainless steel bands. The stainless steel telescopic slides are generally delivered with mill-finish surfaces. The steel telescopic slides are partly made out of a pre-zinc plated steel band and are subsequently batch zinc plated and blue passivated with 5 to 7 µm. Corrosion resistance in the salt spray test for at least 72 hours against white rust is ensured in this way. To achieve higher corrosion resistance, finish refinements can be provided on request. Two processes are available: • Galvanically batch zinc plated 5 to 7 µm, black passivated, corrosion resistance in salt spray test for at least 120 hours against white rust • Galvanically batch zinc plated 5 to 7 µm, passivated, electrolytically coated with T2 top coat / sealer 8 to 12 µm, corrosion resistance in the salt spray test for at least 96 hours against white rust / 500 hours against red rust All materials and finish refinements used are RoHS compliant. Telescopic Slides Technical Information Lubrication and maintenance Telescopic slides are permanently lubricated with high-quality, mineral-oil-based and lead-free bearing lubricants. For stainless steel telescopic slides, special FDA-compliant lubricants are used that are tasteless and odorless. The lub- ricants comply with lubricant class H1, which allows them to be used in areas where it is technically infeasible to prevent occasional contact with food. Generally direct contact can be prevented by taking appropriate actions, such as optimum placement of slides or the use of covers. Re-lubrication is generally not necessary under normal conditions of use since the ball cages and bearings “push out” small amounts of obtained dirt from the slides when the slides move. In applications where there is heavy contamination, the slides should be cleaned from time to time with a clean cloth and then re-lubricated. Acceptable lubricants for the steel variants are, for example, Shell Alvania EP 1 and Klüberplex BE 31-222.