|Diamond blades average cutting depths.
12" = 3 5/8"
14" = 4 5/8"
16" = 5 5/8"
18" = 6 5/8"
20" = 7 5/8"
24" = 9 5/8"
26" = 10 5/8"
30" = 12 5/8"
36" = 14 5/8"
42" = 17 5/8"
48" = 19 5/8"
About Diamond Blades
How Diamond Blades Work.
Diamond blades provide cutting through mutual erosion of the material (concrete, etc.) and the segment, or rim, of the diamond blade. Diamond crystals are embedded throughout a blade's rim, suspended in a metal matrix. As the crystals either get crushed or fall out of the rim, it is essential that the matrix wears down at an optimal rate to expose new diamond to continue efficient cutting. If the matrix fails to wear down fast enough, the rim will glaze over and cutting will become much more difficult and slow. If the matrix wears down too quickly, crystals will be lost before their usefulness has expired. The blade may appear to cut very fast, but the life of the blade will be greatly shortened.
The Rule to Remember
Soft blades cut hard materials, and hard blades cut soft materials.As a general rule, you need a blade with a softer matrix to cut hard, less abrasive materials such as cured concrete, brick, tile or stone. Conversely, you need a blade with a harder matrix to resist the excessive abrasion of softer materials such as green concrete, asphalt or block.
You want an optimum balance between cutting speed and blade life to get the best overall value for your blade.
A number of factors affect the wear rate of rims and overall performance of diamond blades. These include:The hardness of the metal matrix
The quality of the diamond crystals
The density of the crystals within the matrix
The hardness of the material being cut
The abrasiveness of the material being cut
The horsepower of the saw being used
The RPM's of the blade
Blade Life vs Cutting Speed
Typically, there is an inverse relationship between cutting speed and blade life. If a saw operator makes a change, such as increasing cutting pressure to make a blade cut faster, blade life will tend to be shortened as a result. Likewise, if an operator wanted to extend the blade's life, he could reduce cutting pressure and cut slower. Each job is different and labor cost also needs to be added to the equation to arrive at the most cost-efficient solution.