Bridge saw Blades Parameters when cutting marble, granite and ceramic

Blades Parameters When Cutting Marble, Granite And Ceramic With A Bridge Saw

If you process natural stones and ceramic you have to set different parameters in your bridge saw to have a precise cut and to optimize the tool wearing.
Recommended RPMs depend on the material and on the blade diameter and of course the best setting work needs your continuous practice and experience.
The parameters below are to be used as a reference, they are not changeless and fixed.

These values are obtained using the formula:

n = (Vp / 2*π*R) * 60.000

  • n: number of rounds per minute (Rpm)
  • Vp: peripheral speed expressed in meters per second
  • π: pi (3.14)
  • R: radius of the disc expressed in millimeters

The peripheral speed depends on the material to cut, harder is the material less is the speed. You find these speeds in the headers of the tables below.

An example: to calculate how much a 900mm diameter diamond blade has to turn to cut the marble (40 m/s peripheral speed):

n = (40 / 6.28 * 450) * 60,000 = 850 RPM

Parameters when cutting marble, sandstone, and granite

BLADE DIAMETER Ø MARBLE [40-50 M/S] SANDSTONE [55-65 M/S] HARD GRANITE [25-30 M/S] SOFT GRANITE [32-40 M/S]
300 mm (12”) 2600 – 3200 Rpm 3500 – 4200 Rpm 1600 – 1900 Rpm 2000 – 2600 Rpm
350 mm (14”) 2200 – 2700 Rpm 3000 – 3500 Rpm 1300 – 1700 Rpm 1750 – 2000 Rpm
400 mm (16”) 1900 – 2400 Rpm 2600 – 3100 Rpm 1200 – 1500 Rpm 1550 – 1900 Rpm
450 mm (18”) 1700 – 2100 Rpm 2300 – 2800 Rpm 1100 – 1300 Rpm 1400 – 1700 Rpm
500 mm (20”) 1500 – 1900 Rpm 2100 – 2500 Rpm 1000 – 1200 Rpm 1250 – 1500 Rpm
600 mm (24”) 1300 – 1600 Rpm 1700 – 2100 Rpm 800 – 1000 Rpm 1050 – 1300 Rpm
625 mm (26”) 1200 – 1500 Rpm 1650 – 2000 Rpm 750 – 950 Rpm 1000 – 1250 Rpm

Parameters when cutting ceramic and porcelain

BLADE DIAMETER Ø DOUBLE FIRING [55-80 M/S] SINGLE FIRING [45-55 M/S] GRES PORCELAIN [40-50 M/S]
250 mm (10”) 2100 – 3000 Rpm 1700 – 2100 Rpm 1500 – 1900 Rpm
300 mm (12”) 1750 – 2500 Rpm 1400 – 1750 Rpm 1280 – 1600 Rpm
350 mm (14”) 1500 – 2200 Rpm 1250 – 1500 Rpm 1100 – 1400 Rpm
400 mm (16”) 1300 – 1900 Rpm 1100 – 1300 Rpm 960 – 1200 Rpm
500 mm (20”) 1050 – 1550 Rpm 860 – 1050 Rpm 780 – 960 Rpm

For recommended rpm of more sizes or different materials please write to us:


To buy bridge diamond blades: https://amastone.com/category/bridge-saw-blades/

Conclusion

You can use the tables above for a quick consultation of the number of revolutions per minute (rpm) you have to set to cut a given material.
The tables show only the blade-diameters and the most common materials, but with the formula, you can calculate the rpm even for diamond blades to be mounted on a grinder or on a block cutter. If you know the peripheral speed necessary to cut other materials you can calculate easily rpm even for materials other than those listed.
With the right parameters and experience, you will be able to cut precisely and efficiently.
For questions or concerns leave a comment below.

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