On abrasive wheel machines, guards must protect all of the following parts except

On abrasive wheel machines, guards must protect all of the following parts except

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

Answer: (C)

Guards on abrasive wheel machines are designed to shield the operator from the rotating wheel and from fragments, while keeping the work stable and away from the wheel. The work rest is an integral part of the guarding system because it supports the work and helps prevent hands from reaching into the wheel area. The wheel rim—the exposed edge of the wheel—must be covered to contain pieces if the wheel breaks or shatters. The grinding spindle, which drives the wheel, also needs protection to prevent contact with the rotating parts and to contain any debris. The adjustable tongue, while part of the guard’s assembly and used to set the guard clearance, is not a separate exposed surface that the guard must shield on its own.

Guards on abrasive wheel machines are designed to shield the operator from the rotating wheel and from fragments, while keeping the work stable and away from the wheel. The work rest is an integral part of the guarding system because it supports the work and helps prevent hands from reaching into the wheel area. The wheel rim—the exposed edge of the wheel—must be covered to contain pieces if the wheel breaks or shatters. The grinding spindle, which drives the wheel, also needs protection to prevent contact with the rotating parts and to contain any debris. The adjustable tongue, while part of the guard’s assembly and used to set the guard clearance, is not a separate exposed surface that the guard must shield on its own.