The L 340 conveyor belt labellers can label cylindrical products accurately, reliably and simply. The products for wrap-around labelling, such as for example sausages or tablet tubes, are placed on a driven roller conveyor at right angles to the running direction. The L 340 can be used extremely flexibly and is able to label different product lengths. Height adjustments for the label dispenser and roll-on belt also enable the labeller to be adapted quickly to different product heights. The L 340 conveyor belt labeller is also available in hygienic design for use in particularly hygiene-sensitive areas such as for example food production.