How do you get the gear ratio from the id tag numbers?

To determine the gear ratio from the ID tag numbers, locate the numbers on the tag that indicate the gear specifications. Typically, these numbers include a ratio formatted as two digits separated by a colon (e.g., 3:1), or they may indicate the number of teeth on the gears involved. You can calculate the ratio by dividing the number of teeth on the driven gear by the number of teeth on the drive gear if the tag does not provide a clear ratio. Always refer to the manufacturer's documentation for specific interpretations of the ID tag numbers.