It is recommended at a minimum the vibration transducers be placed in line with the input and output shaft. For Amarillo Gear’s recommended placement on our gearboxes to avoid erroneous vibration readings, request our Form 612A (fan drives). If specified at the time of order, we will drill/tap/spot-face vibration transducer locations on the gear drive. In the field, however, to avoid the possibility of drilling through the gear case and creating an oil leak, it is recommended to attach sensors using epoxy-mounted thread blocks in the specified locations.