HIGH SPEED LOCKSTITCH SEWING MACHINE BUTTON SEWING MACHINE NEEDLE ROLLER HIGH SPEED HEAVY DUTY LOCKSTITCH SEWING MACHINE HIGH SPEED OVEREDGER HIGH SPEED DOUBLE CHAIN STITCH SEWING MACHINE LOCATING BEARING LIFTING STAND HIGH SPEED SIDE CUTTER LOCKSTITCH SEWING MACHINE THREAD DIVIDER ONE-WAY NEEDLE ROLLER CLUTCH OUTER RING AXIAL MOVING ROLLER BEARING OUTER RING SINGLE WAY POSITIONING ROLLER BEARING INNER RING AXIAL MOVING ROLLER BEARING INNER RING SINGLE WAY POSITIONING ROLLER BEARING OUTER RING WITH DOUBLE RIBS AXIAL MOVING ROLLER BEARING CYLINDER ROLLER BEARING WITHOUT INNER RING CYLINDER ROLLER BEARING WITHOUT OUTER RING