Mounting Abrasives
The mounting of the abrasive used with the tool is very important to ensure safety for the operator and proper
functioning of the tool. There are strict rules for mounting wheels that are outlined in ANSI B7.1-2000. The
following diagrams briefly describe the methods and equipment for mounting most abrasives.
Each wheel/mounted stone is labeled with a maximum operating speed. It is extremely important to compare
this rating with the maximum operating speed of the tool. Never mount a wheel on a tool where the maximum
operating speed of the tool is higher than the maximum operating speed of the wheel. This can cause an over
speed situation and can result in injury.
The following list details specific items one should inspect and be aware of when mounting abrasives.
● The maximum operating speed marked on the wheel must be equal to or higher than the rated spindle speed
(free speed) of the tool.
● Check the wheel dimensions so that it fits within the guard properly.
● Do not use any wheel that shows cracks, chips or evidence it has been soaked in fluids.
● Wheel flanges should have flat contact surfaces and be without cracks or burrs.
Testing the Mounted Wheel
Start any new grinder with a new wheel under a bench and away from any bystanders. Run at full speed for
one minute.
Type 27 Wheel w/ Built-In
Wheel Flange
Type 27 Wheel w/o
Wheel Flange
Spacers , backing plate,
retaining nut and hex
wrench are used with this
mounting method
CP-53
CP-51
CP-53
RIGHT ANGLE TOOL FOR
USE WITH TYPE 27 WHEELS
