Stationary Bench Grinder


Table of Contents

Instruction

  1. Equipment Overview:
    • Point of Operation: All cutting action occurs at the point where the abrasive wheel encounters the material being manually pushed into it
    • Pinch/Nip points: Pinch points can occur between the wheel and shrouds, wheel and rest, and wheel and guards.
    • Unguarded rotating parts: The grinding wheel.
    • Flying chips/sparks: Chips, dust and sparks are forcefully thrown from the machine when in use. Much of this is directed back into the wheel overs but some is directed down and away from the machine and user. It is not uncommon for the user to be in the path of sparks
  2. Preparation:
    • Complete required orientations and sign into the metal shop log
    • Before using the grinder take a minute to refresh yourself with all of its accessories and functions, if anything is not familiar you must ask either the supervisor or a metal shop TA to refresh your training
    • Determine that the surrounding area is clean and clear and free of anything that could interfere with your operation of the machine. Make sure that the people working around you are aware of what you are about to do and an appropriate distance away before turning on the grinder.
    • Put on all required PPE
    • Examine the wheel before use. Look for any obvious flaws such as cracks or chips and also
    • examine the edge of the wheel to see that it is properly trued. If you notice anything strange
    • notify the supervisor or metal shop TA to replace or true the wheel. Do not attempt to replace a
    • grinding wheel yourself
    • Adjust tool rests to no more than 1/8” from the wheel
  3. Operation:
    • Position the material on the tool rest
    • Verify that the grinder shields are in place and locked in place
    • Before turning on the grinder check that all of its accessories are positioned correctly
    • When turning the grinder on stand to one side while it comes up to speed. Make sure no one else is standing directly in front of the machine as it powers on
    • Turn on the grinder and allow it to reach full speed
    • Grind using moderate pressure, keeping material in contact with the rest
  4. Finishing:
    • Turn off the grinder and wait for the wheel to stop
    • Remove the material and clean the area and machine

Required Personal Protective Equipment (PPE)

  • Eye Protection: Safety Glasses and Full Face Shield
  • Ear Protection: Hearing Protection Earmuffs
  • Respiratory Protection: Dusk mask / respirator

Engineering Controls

  • Safety guards
  • Proper lighting
  • Dust collection system
  • Remove any jewelry
  • NO Gloves worn when operating machine
  • Always be aware where the off switch and how to best access it if needed