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Diamond Core Drills
Recommended RPM for Dimaond Segmented Core Drills.
Note: Decrease RPM for hard dense materials.
Note: Increase RPM for soft abrasive materials.
Core Bit DiameterRPM
1/4"10,000
3/8"8,000
1/2"6,000
5/8"5,000
3/4"4,500
1"4,000
1-1/4"3,800
1-3/8"3,500
1-1/2"3,400
1-3/4"3,300
2"3,000
2-1/4"2,600
2-3/8"2,300
2-1/2"2,000
   
Core Bit DiameterRPM
2-5/8"1,700
2-3/4"1,350
3"1,000
3-1/4"900
3-3/8"800
3-1/2"700
3-3/4"575
4"450
4-1/4"420
4-3/8"400
4-1/2"375
4-5/8"350
4-3/4"325
5"300
 
 
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