The type of runner is determined by the design of the running elements, independently of the guiding method.
Guide rails: Plastic rails act as gliding surfaces that support the weight of drawers and their contents.
Roller-guided drawer runners: The running elements are rollers. The type of roller varies from friction bearing mounted polyamide rollers to ball bearing mounted polyamide rollers, ball bearing mounted polyamide-coated steel rollers and silent moving rollers.
Ball guided runners: Steel or plastic balls in ball cages are used as the running elements.
Concealed dynamic runners: Rollers in running gear are used as the running elements.