Grinder and Power Brush Safety -

Welding Help
Safe Operating Practices
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Safe Operating Practices

Safe operating practices must be part of every grinding wheel user’s operation.
The greatest efficiency and lowest overall abrasive cost can be realized only if
proven care and use techniques become standard practice.

Be sure to read any safety material/guidelines provided with the abrasive

Always check the wheel for cracks or damage before use.

Before mounting the wheel, use a tachometer to measure the spindle speed.

Ensure the mounting flanges, backplate or adapter supplied by the machine
manufacturer are used and kept in good condition. ANSI Safety Requirement B7.1
provides wheel mounting requirements. Check mounting flanges for equal and
correct diameter and use blotters when supplied.

Always mount, true and dress the wheel in conformance with the
guidelines published in the ANSI Safety Requirements B7.1.

Ensure the correct wheel guard is in place before starting the wheel. Allow the wheel
to come up to full operating speed for a minimum of one minute before starting to
grind and stand out of the plane of rotation.

NEVER use a high speed air sander as a portable grinder.

NEVER exceed the maximum operating speed marked on the wheel being used.

The following formula may be used to calculate wheel speed:

SFPM = Spindle Speed in RPM x Wheel Dia. in inches x .262

Avoid dropping or bumping the wheel.

When not using the wheel, store the wheel in its original packing materials.
This protects the wheel from chips and cracking, as well as provides easy
identification of the wheel.

For more information on product safety, ask your Radnor Distributor for these

ANSI B7.1 “Safety Requirements for the Use, Care and Protection of Abrasive

Federal Hazard Communication Standard 29 CFR 1910.95, 1910.132, 1910.133,
1910.134, 1910.138 and 1910.1200.

Material Safety Data Sheets

Other applicable regulations