How to Judge Whether the Fanuc Servo Motor Has a Keyway?

Fanuc servo motor refers to the engine that controls the operation of mechanical components in the servo system, and is an auxiliary motor indirect speed change device. The fanuc motor can control the speed and position accuracy very accurately, and can convert the voltage signal into torque and speed to drive the control object.

What is a servo motor?

The rotor speed of the fanuc series motor is controlled by the input signal and can react quickly. It is used as an actuator in an automatic control system. Moreover, the fanuc automation motor has the characteristics of small electromechanical time constant and high linearity, and can convert the received electrical signal into angular displacement or angular velocity output on the motor shaft. They are mainly Divided into two categories of fanuc dc servo motors and fanuc ac servo motors, its main feature is that there is no rotation when the signal voltage is zero, and the speed decreases at a uniform speed with the increase of torque.

What is the function of the keyway of the servo motor?

There are usually multiple key grooves on the motor shaft. The keyway located in the laminated area of the rotor punching piece of the rotating shaft is used for fixing the punching piece of the armature. Its purpose is to prevent the rotor blades from rotating when the rotor rotates. Usually there are key grooves on the shaft extension and non-shaft extension ends of the rotating shaft. The keyway at the shaft extension is used to link with the load of the fanuc motor machine. The keyway of the non-shaft extension end is usually the matching key of the fan blade, or some are used for the matching of the resolver.

How to make sure your fanuc motor has a keyway?

Look

First, carefully observe the end of the shaft. If you can clearly see the hole at the end of the coupling, you can make different judgments according to different situations. If you see a hole at the most central end, it may be a smooth shaft. If the shaft has three holes in a line, it means you have a keyed shaft.

Tag

If you are inconvenient to check the status of the axis, there is actually an easier way, that is, to read the label information on the fanuc servo directly. There may be two types of labels on the fanuc spindle motor, one is a yellow FANUC sticker and the other is a silver G.E.fanuc sticker. Usually the yellow FANUC sticker is easier to distinguish, because you mainly check whether the part number on the label has a # tag at the end. If there is, it is a keyed shaft. Otherwise, it means that it is a smooth shaft.

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