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November 7, 2017
The governor limits the air flow through the motor when no torque is applied. As soon as the operator increases the load, the air governor allows more air to flow through the air motor, maintaining the rotational speed of the abrasive. With this design, the abrasive is run at the correct speed and delivers maximum material removal.
The tool is running at free speed, with little to no load applied by the operator.
The tool is running and load is applied by the operator. The air governor opens up, to increase the air flow.
Put another way, with grinding, time is definitely money. To boost productivity, lower cost, and increase safety, several steps can be taken to reduce time spent grinding.
Whether chamfering a steel plate, deburring a casting, or smoothing a weld seam, always select the appropriate abrasive for the job. Carbide burrs, bonded wheels & coated pads, wire brushes, and polishing pads are a few of the many options that can increase the rate of material removal or decrease the amount of load applied by the operator; improving both efficiency and safety! Finally, always remember to match the abrasive to the tool's speed.
Running the abrasives at the proper speed results in larger percentage of material removal in a given time.
Proper abrasive speed offers optimal safety for operators, avoiding abrasive bursts. Generally the free speed of a tool should never exceed the abrasive's maximum operating speed.
It is possible to optimize the abrasive's speed by equipping the tool's air motor with a governor. The air governor acts like a “cruise control” for the grinder: It adjusts the air flow to the load applied on the tool, so the abrasive's speed is maintained, maximizing the material removal.
When the tool is not equipped with an air governor and feed force is applied, the tool’s speed decreases and therefore the abrasive cannot be run at the right speed. The operator needs more time to get the same job done.
Ensure that your grinder's free speed always aligns with and never surpasses the abrasive manufacturer's specified guidelines (MOS)
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