Angle/Portable Grinder Safety

Why is it only necessary to tighten the disk lock nut snugly when the disc is replaced on the portable disc grinder?

• The threads will be stripped on the spindle.

• The disc may be too difficult to remove the next time.

• The natural rotation of the disc and spindle will cause the threads to tighten.

• To allow the loose threads to absorb some of the vibration created by the portable disc grinder.

When operating the portable disc grinder the grinding disk should be positioned so the sparks and grit are thrown _____________.

• up in the air.

• away from the operator. down to avoid hitting others.

• away from the operator and others in the work area.

• down to avoid hitting others.

What can the operator expect to happen when the wire brush attachment is used on the portable disc grinder?

• The grinder may jump or be thrown about.

• The grinder rocks back and forth.

• The grinder stays steady on the material being bushed.

• None of the above.

Arms should be protected by wearing ____________ when using the portable disc grinder.

• Gloves

• long sleeved shirt

• long sleeved mesh jacket

• long sleeved leather gloves

Grinding with the portable disc grinder should not occur in an area which______________

• is enclosed.

• is freshly painted.

• has windows.

• houses flammables or combustible gases.

When the portable disc grinder is laid down it should be positioned _____________.

• with the disc down

• on its left side

• on its right side

• on the tool rest with the disc facing up

The grinding disc should be replaced when worn to _____________ of its original diameter.

• 1/2

• 1/4

• 3/4

• 1.5

What is the minimum size wire gauge extension cord used with hand grinders due to its amp draw?

• 10

• 12

• 14

• 16

What personal protective equipment should be worn when operating the portable disc grinder?

• Safety glasses Safety glasses, hearing protection, gloves, Safety glasses, hearing protection, gloves and respirator.

• Safety glasses and Face shield

• Face shield and Gloves

• None of the above

To reduce fatigue and over working the hand grinder, one should________________.

• push down with force

• float the grinder off the material using your arms

• use a 90 degree angle on the material

• use only the weight of the grinder to put pressure on material