Abstract: A device and method of checking wear on roller chains enables a quantitative statement to be made about the state of wear of a fitted roller chain. A device for tensioning a portion of the roller chain with a defined measuring load and a device for measuring the spacing between a given number of chain links are provided, the device for measuring the spacing having two contact pins, each of which is configured for positioning between two rivet heads or on a rivet head of a link plate, and a device for measuring and displaying the distance between the two contact pins. An accurate, quantitative measurement of the wear on a roller chain in the fitted state is obtained quickly and easily.

Abstract: The invention relates to a device and method of checking wear on roller chains. In order to provide a device for checking wear on roller chains, which enables a quantitative statement to be made about the state of wear of a fitted roller chain, it is proposed according to the invention that means for tensioning a portion of the roller chain with a defined measuring load be provided and that means for measuring the spacing between a given number of chain links be provided, the means for measuring the spacing having two contact pins, each of which is configured for positioning between two rivet heads or on a rivet head of a link plate, and a device for measuring and displaying the distance between the two contact pins. The advantages of the invention consist essentially in that it enables an accurate, quantitative measurement of the wear on a roller chain in the fitted state to be obtained quickly and easily.

Abstract: According to the invention, in order to control the vehicle geometry of a chain or belt driven vehicle, chain alignment of the secondary drive is determined by means of a laser module (1) which is placed on the lateral surface of the chain wheel or the belt pulley and whose the laser beam is directed to the edge area of the chain or belt. Wheel alignment can also be determined, by arranging two pairs of circular segment shaped calibres (11), which are pressed flat against each other by pressing means (12) on each side of the rim of at least one back wheel and on at least one front wheel of the vehicle, and by emitting parallel laser beams (17) on both sides of one of the calibre pairs to the other calibre pair (17), the laser beams impacting measuring devices (13) which are arranged on both sides of the other pair of calibres. The dimensional accuracy of the swing and the front wheel fork can also be determined in a similar manner.