Use the table below as safe speed guidelines for your diamond blade.
| Blade Diameter |
Rec. RPM |
Max. RPM |
| 4" |
9,000 |
15,200 |
| 4-1/2" |
8,000 |
13,500 |
| 5" |
7,200 |
12,200 |
| 6" |
6,500 |
11,090 |
| 7" |
5,100 |
8,730 |
| 8" |
4,500 |
7,640 |
| 9" |
4,000 |
6,700 |
| 10" |
3,600 |
6,115 |
| 12" High Speed |
n/a |
6,300 |
| 14" High Speed |
n/a |
5,460 |
| 16" High Speed |
n/a |
4,724 |
| 18" |
2,000 |
3,300 |
| 20" |
1,800 |
3,000 |
| 24" |
1,500 |
2,550 |
| 26" |
1,300 |
2,350 |
| 28" |
1,200 |
2,185 |
| 30" |
1,200 |
2,040 |
| 32" |
1,100 |
1,910 |
| 36" |
1,000 |
1,700 |
| 42" |
800 |
1,455 |
| 48" |
700 |
1,275 |
*Recommended saw blade RPM based on 9,500 SFPM.
FAQs About Saw Blade RPMs
Why is it important to follow the recommended RPM?
Following the recommended saw blade RPM ensures the blade operates at optimal cutting speed, minimizes wear, and reduces the risk of damage to the blade or equipment.
What happens if I exceed the maximum RPM for a diamond blade?
Exceeding the maximum RPM can cause the blade to overheat, warp, or even break, potentially leading to unsafe working conditions.
What does SFPM mean in the chart footnote?
SFPM stands for Surface Feet Per Minute. It measures the speed at which the blade’s edge moves through the material being cut. The chart is based on a standard of 9,500 SFPM for optimal performance.
How do I determine the correct RPM for my saw and blade?
Match the blade diameter with the corresponding RPM values in the chart. Use the recommended RPM as a guide for safe and efficient cutting.
Can I use a blade at a lower RPM than recommended?
Using a blade at a significantly lower RPM than recommended can reduce cutting efficiency and may result in uneven cuts or slower performance.
