The scope of UAMA B74.22-1991 (R2014) is limited to 9″ x 1/4″ Type 27 portable grinding wheels that can be cracked in such a manner that the crack is not visible to the operator. If the 9″ x 1/4″ wheel passes the test then 7″ x 1/4″ wheels of the same design are also considered to have passed since the test conditions on a 9″ x 1/4″ wheel are much more severe than on a 7″ x 1/4″ wheel.
- Published:
- 10/24/1991
- ANSI:
- ANSI Approved
- Number of Pages:
- 11
- File Size:
- 1 file , 680 KB
- Note:
- This product is unavailable in Ukraine, Belarus, Russia
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