Which part is not required to be protected by guards on abrasive wheel machines?

Which part is not required to be protected by guards on abrasive wheel machines?

• A. Grinding spindle
• B. Abrasive wheel rim
• C. Adjustable tongues
• D. Work rest

Answer: (C)

The safety idea here is that guards on abrasive wheel machines are meant to protect you from wheel fragments and accidental contact with the wheel. The wheel guard must cover the wheel on both sides and shield the spindle end, nut, and flange, and the work rest must be kept in place and properly adjusted to keep your hands and work away from the wheel. The adjustable tongue guard is a movable part of the guarding system used to control how much of the wheel is exposed, and it does not require its own separate protection beyond the main guard. So, among the parts listed, the adjustable tongues are the one that isn’t protected by an additional separate guard.

The safety idea here is that guards on abrasive wheel machines are meant to protect you from wheel fragments and accidental contact with the wheel. The wheel guard must cover the wheel on both sides and shield the spindle end, nut, and flange, and the work rest must be kept in place and properly adjusted to keep your hands and work away from the wheel. The adjustable tongue guard is a movable part of the guarding system used to control how much of the wheel is exposed, and it does not require its own separate protection beyond the main guard. So, among the parts listed, the adjustable tongues are the one that isn’t protected by an additional separate guard.