PDFWAC 296-806-40516
Use proper flanges.
(1) You must mount all abrasive wheels between flanges that have a diameter at least one-third the diameter of the wheel.
EXEMPTION: | This flange requirement does not apply to the following wheels: |
1. Mounted wheels (wheels permanently bonded to a shaft or mandrel). | |
2. Abrasive disc wheels (inserted nut, inserted washer and projecting stud type). | |
3. Plate mounted wheels. | |
4. Cylinder, cup, or segmental wheels mounted in chucks. | |
5. Types 27, 28, and 29 wheels. | |
6. Internal wheels less than two inches in diameter. | |
7. Modified Type 6 and 11 wheels (terrazzo). | |
8. Types 1 and 27A cutting-off wheels. |
(2) You must make sure flanges are:
(a) Dimensionally accurate.
(b) Properly balanced.
(c) Flat.
(d) Free of rough surfaces or sharp edges.
(3) You must make sure the driving flange is:
(a) Part of the spindle; or
(b) Securely fastened to the spindle.
(4) You must make sure, if a wheel is mounted between two flanges, that both flanges:
(a) Are the same diameter; and
(b) Have equal bearing surfaces.
EXEMPTION: | The following wheels do not require same diameter, equal bearing surface flanges: |
1. Types 27, 28, and 29 wheels with adaptors. | |
2. Modified Types 6 and 11 wheels with tapered K dimension. | |
3. Internal wheels less than two inches in diameter. |