Linear guides as parts of machines; adjusting mechanism in the nature of linear actuators being parts of machines for use in handling technology, packaging technology, assembly technology, coating-, bonding- and mechanical process engineering, machine tool manufacturing, textile machinery manufacturing, semiconductor machinery manufacturing; positioning facilities and positioning drives being parts of machines, all aforementioned goods mainly consisting of slide ways and slides in the nature of powered ramps as well as drive units for these slides being parts of machines consisting of electric motors with gears of hand wheels and shaft or pneumatic cylinders or hydraulic cylinders; parts of the aforementioned devices, equipment and drives, namely, electric motors, gears, machines couplings, limit pressure switches; hydraulically or pneumatically operated cylinders being parts of machines for clamping of components; lifting column in the nature of linear actuators being part of machines in the nature of height-adjustable work benches, height-adjustable medical devices, height-adjustable conveyor systems, mobile transfer systems with height adjustment, all for the adjustment of working platforms