According to the NSC Accident Prevention Manual, tool rests should be adjusted to not more than_____ from the grinding wheel and tongue guards should be adjusted to ______?

According to the NSC Accident Prevention Manual, tool rests should be adjusted to not more than_____ from the grinding wheel and tongue guards should be adjusted to ______?

• A. 1/8 inch and 1/4 for the tongue guard
• B. 1/4 inch and 1/8 for the tongue guard
• C. 1/2 inch and 1/4
• D. 1/8 inch and 1/2 inch

Answer: (A)

The important safety idea is keeping protective gaps on a bench grinder small so the wheel can’t grab the work or clothing, and so you stay protected from wheel contact. The tool rest needs to be set very close to the wheel—no more than 1/8 inch apart—so you can control the workpiece and prevent it from slipping into the wheel. The tongue guard should also be kept close to the wheel, within about 1/4 inch, to minimize exposure and reduce the chance of fingers or fabric getting caught. These specific distances are prescribed by the NSC Accident Prevention Manual to reduce entrapment and wheel-fragment risks. So, the recommended setup is tool rest at 1/8 inch from the wheel and tongue guard at 1/4 inch.

The important safety idea is keeping protective gaps on a bench grinder small so the wheel can’t grab the work or clothing, and so you stay protected from wheel contact. The tool rest needs to be set very close to the wheel—no more than 1/8 inch apart—so you can control the workpiece and prevent it from slipping into the wheel. The tongue guard should also be kept close to the wheel, within about 1/4 inch, to minimize exposure and reduce the chance of fingers or fabric getting caught. These specific distances are prescribed by the NSC Accident Prevention Manual to reduce entrapment and wheel-fragment risks. So, the recommended setup is tool rest at 1/8 inch from the wheel and tongue guard at 1/4 inch.