The present invention is directed to providing a device for changing the timing of intake and exhaust valves in an internal combustion engine in which the high production costs for an axial bearing on {TAIL ~ the camshaft} as well as the overall axial length of the camshaft necessary for this axial bearing and for the impulse sending wheel attached to the device can be reduced to {HEAD ~ a minimum} 
The present invention is directed to providing a device for changing the timing of intake and exhaust valves in an internal combustion engine in which the high production costs for an axial bearing on { TAIL ~ the camshaft } as well as the overall axial length of the camshaft necessary for this axial bearing and for the impulse sending wheel attached to the device can be reduced to { HEAD ~ a minimum }
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