Gearboxes are common in industry. They are used to increase or decrease speed from the driver, provide increased torque, and change direction of power transmission.
There are two main types of commonly-used gearboxes:
Of these, gearboxes can be:
SINGLE STAGE GEARBOX
An important part of the gearbox setup is the Multiplication Factor. This is a multiplier which is used to calculate the output speed of the gearbox, since practically all gearboxes are either slower or faster than the motor speed.
You simply take the motor rpm, and multiply it by the Multiplication Factor. If the multiplication factor is more than 1, it means the output speed of the gearbox is more than the motor speed. If the multiplication factor is less than one, the output speed of the gearbox is less than the motor rpm.
IF THE MOTOR RPM AND GEAR RATIO IS KNOWN
IF THE INPUT AND OUTPUT SPEEDS ARE KNOWN
IF NEITHER SPEED IS KNOWN
IF THE GEAR TOOTH COUNTS ARE KNOWN
If we have a gearbox with multiple stages, it means there are:
Calculating the output speed is done the same way as above.
With traditional vibration tools, many other things are required, such as:
With one of the new machinery diagnostic tools, like the OneProd HAWK, the data inputs are much simpler. The HAWK uses ISO specifications and specialized “smart” software to determine bearing and gear faults. So, the only requirements are the input speed, and the multiplication factor. This makes an accurate determination of the gearbox health simple.
Want to know more? See the Hawk at https://vibralign.com/tools/machinery-diagnostics/hawk-supervisor/