Diamond saw blades are highly efficient tools widely employed for cutting hard and brittle materials such as stone, ceramics, concrete, and asphalt. Given their numerous dimensional parameters, comprehensive consideration is required to select the appropriate blade.
1. Principal dimensional parameters
1) Diameter
The saw blade diameter refers to the maximum outer circumference diameter of the cutting edge. This is the most critical dimension, directly determining the maximum cutting depth achievable. Selection of diamond saw blade diameter primarily depends on the specifications of the cutting machine (maximum flange diameter permitted) and the thickness of the material to be cut. Typically, the saw blade diameter should exceed the material thickness by at least 20-30mm.
Small Diameter (≤ 150mm): Primarily used in handheld tools such as angle grinders and marble cutters for shallow cuts, grooving, or trimming.
Medium Diameter (150mm - 500mm): Most commonly employed in stone processing, tile cutting, and concrete pavement cutters (road cutters).
Large diameter (500mm - 3500mm or greater): Employed in large bridge saws, mining operations, and cutting substantial concrete structures, requiring large-scale mechanical drive systems.
2) Bore Diameter
The saw blade bore diameter refers to the diameter of the circular hole at the blade's centre, designed for mounting onto the machine spindle. It must precisely match the diameter of the equipment spindle. Should bore sizes differ, adaptor rings (reducing rings/spacers) may be employed for conversion, provided secure installation and high concentricity are ensured.
Common specifications include Φ10mm, Φ16mm, Φ20mm, Φ22.23mm (7/8 inch), Φ25.4mm (1 inch), Φ50mm, and Φ80mm.
Small-diameter blades typically employ Φ10mm, Φ16mm, Φ20mm, and Φ22.23mm.
Large-diameter blades typically employ Φ50mm, Φ80mm, or larger non-standard bore diameters.
3) Thickness
The thickness of a diamond saw blade typically refers to the thickness of the blade's base material.
Base thickness determines the blade's rigidity, stability, and resistance to deflection. Thicker blades offer greater stability and straighter cuts, but result in wider kerf and higher material wastage; thinner blades minimize material loss and conserve resources, yet demand greater machine stability and operator skill.
Tile thickness: Generally exceeds the body thickness and determines the final kerf width.
When selecting diamond saw blade thickness, opting for a thinner blade can reduce material wastage and cutting resistance, provided sufficient rigidity and cutting precision are maintained.
