23 BALLBEARING, ROLLER BEARINGS, PARTS THEREOF AND MOUNTING ACCESSORIES THERETO, BEARING RINGS FOR SHEET ROLLING MILLS, HOUSINGS, COMPRISING PILLOW BLOCKS, CHUCKS, SUPPORTS, CASINGS, CLOSURES, HANGERS, TAKE-UP BOXES AND LIDS AND END COVERS THEREFOR FOR BALL AND ROLLER BEARINGS, PULLEYS, TENSION PULLEYS, TEXTILE SPINDLES, SHAFT BOXES, SHAFT COUPLINGS, OIL MIST LUBRICATORS