Page 26 - Bullard Abrasives Product Catalog 2020

CUTTING
» Longest life - use coarsest, hardest wheel that will do the job
» Minimum of 1 hp for every 1" of wheel diameter
» Never exceed the recommended RPM for maximum performance and safety
» Most efficient cutting rate - use 2-3 seconds per square inch as a guideline
» Position materials for the least contact between wheel and work piece
» Flanges should be equal diameter, recessed and at least 1/3 the diameter of the wheel for wheels 12" and larger
7
HELPFUL HINTS
HELPFUL HINTS
GRINDING
» For maximum results Type 27 depressed center wheels should be used at a 15o to 30o angle to the work piece
» Depressed center grinding wheels should never be used flat
» Type 28 wheels should be used at a minimum of 10˚ angle to the
work piece
» Type 29 wheels should be used at a minimum of 15˚ angle
» Type 29M wheels should be used at a minimum of 5˚ angle
26 | BULLARD ABRASIVES | HELPFUL HINTS - CUTTING AND GRINDING
Type 27
15˚ to 30˚
Type 28
10˚ to 30˚
Type 29
15˚ to 30˚
Type 29M
5˚ to 30˚