Device for welding hard material elements onto teeth of a saw blade , in particular a band or circular saw blade, comprising a saw blade feed device for moving the saw blade in a feed direction , such that a respective intended tooth of the saw blade can be brought into a target position in a working region of the device , comprising a first centering device for centering the saw blade transversely to the feed direction and for fixing the saw blade while the hard material element is welded on, comprising a supply device for supplying a respective hard material element , comprising a second centering device for centering a respective hard material element transversely to the feed direction before the welding, comprising a resistance welding device having a welding electrode that can be deployed into the working region and can be withdrawn from the working region , the supply device being designed to supply and transfer a respective hard material element to the welding electrode , and it being possible for the welding electrode with the hard material element transferred thereto to be deployed into the working region in such a way that the hard material element can be brought toward the tooth in the target position to abut the tooth , characterized in that the hard material element abutting the tooth can be centered relative to the centered and fixed saw blade by means of the second centering device , and in that the first and the second centering device are provided in a common assembly , such that the centering of the saw blade by the first centering device predetermines a centering position for the subsequent centering of the hard material element by the second centering device . comprising a saw blade feed device for moving the saw blade in a feed direction , such that a respective intended tooth of the saw blade can be brought into a target position in a working region of the device , comprising a first centering device for centering the saw blade transversely to the feed direction and for fixing the saw blade while the hard material element is welded on, comprising a supply device for supplying a respective hard material element , comprising a second centering device for centering a respective hard material element transversely to the feed direction before the welding, comprising a resistance welding device having a welding electrode that can be deployed into the working region and can be withdrawn from the working region , the supply device being designed to supply and transfer a respective hard material element to the welding electrode , and it being possible for the welding electrode with the hard material element transferred thereto to be deployed into the working region in such a way that the hard material element can be brought toward the tooth in the target position to abut the tooth , characterized in that the hard material element abutting the tooth can be centered relative to the centered and fixed saw blade by means of the second centering device , and in that the first and the second centering device are provided in a common assembly , such that the centering of the saw blade by the first centering device predetermines a centering position for the subsequent centering of the hard material element by the second centering device . <EOS>