7 ANTIFRICTION BEARINGS AND PLAIN BEARINGS, NAMELY, BEARINGS FOR LINEAR MOTIONS SUCH AS RECIRCULATING BALL SLEEVE TYPE LINEAR BEARINGS, RAIL GUIDES, RECIRCULATING ROLLER AND BALL FLAT-WAY TYPE BEARINGS; BEARING SLEEVES AND BEARING HOUSINGS; MACHINES FOR FEEDING WORKPIECES TO WORKPIECE MACHINING OR PROCESSING MACHINES AS WELL AS FOR THEIR FURTHER CONVEYANCE, NAMELY, TABLES AND CARRIAGES; MECHANICAL PICK- AND PLACE UNITS AND LINEAR MOTION MODULES USED WITH MACHINE TOOLS AND ASSEMBLY DEVICES FOR GRIPPING, HOLDING, DEPOSITING, TURNING, SLIDING AND REMOVING WORKPIECES; PNEUMATICALLY, HYDRAULICALLY, MECHANICALLY AND/OR ELECTRICALLY DRIVEN ACTUATORS FOR MACHINE TOOLS AND FOR WORKPIECE FEEDING MACHINES