Abrasive Wheel Machinery

Guarding of abrasive wheel machinery [1910.215(b)]

Figure Nos. O-18 and O-19 CORRECT - Showing adjustable tongue giving required angular protection for all sizes of wheel used.

Figure Nos. O-20 and O-21 Showing movable guard with opening small enough to give required protection for smallest size wheel used.

Figure Nos. O-22 and O-23 INCORRECT - Showing movable guard with size of opening correct for full size wheel but too large for smaller wheels.

1910.215(b)(9) Exposure adjustment. Safety guards of the types described in Subparagraphs (3) and (4) of this paragraph, where the operator stands in front of the opening, shall be constructed so that the peripheral protecting member can be adjusted to the constantly decreasing diameter of the wheel. The maximum angular exposure above the horizontal plane of the wheel spindle as specified in paragraphs (b)(3) and (4) of this section shall never be exceeded, and the distance between the wheel periphery and the adjustable tongue or the end of the peripheral member at the top shall never exceed one-fourth inch. (See Figures O-18, O-19, O-20, O-21, O-22, and O-23.)