QEH30-CA

Load ratings

Static load rating C0

If a linear guideway system is subjected to excessive loads or impacts during movement or at a standstill, localised permanent deformation occurs between the track and balls. As soon as this permanent deformation exceeds a certain level, it affects smooth operation of the guideway. According to its basic definition, the static load rating corresponds to a static load that causes permanent deformation of 0.0001 × ball diameter at the contact point that is loaded the most. The values are given in the tables for each linear guideway system. Using these tables, the designer can select a suitable linear guideway system. The maximum static load to which a linear guideway system is subjected must not exceed the static load rating.

Permissible static moment M0

The permissible static moment is the moment which, in a defined direction and size, corresponds to the maximum possible load on the moving parts by the basic static load rating. The permissible static moment is defined for linear motion systems for three directions: MX, MY and MZ.

Lubrication

Long-time lubrication unit E2

The long-time lubrication unit considerably increases lubrication intervals. Depending on the application and ambient conditions, it can achieve lifetime lubrication. It also considerably reduces lubricant consumption, as only the required quantity of lubricant is applied. The compact construction and special design allows the block to be fitted in any position without impairing the lubrication function. The long-time lubrication unit can be used at ambient temperatures of -10°C to +60°C.