All categories Machining tools Sawing tools Metal circular saw blades for circular saws

Metal circular saw blade with secondary pinholes

For metal circular saw blades with secondary holes, a general distinction is made between the following tooth shapes and cutting materials:

Tooth form Bw

The tooth form Bw is designed for cutting solid material with high cutting depths (applications with cutting depths of more than 5% of the saw blade diameter). This tooth shape produces a narrower chip and allows the chip to expand laterally (due to heat).

Both tough and soft materials are covered by this tooth form. The chip is 1/3 narrower and reduces the cutting forces at the tooth root by 30%. There is more space for the coolant in the cutting area.

Tooth form C

Tooth form C is used for cutting materials. Due to its splitting tooth form, it is characterized by a high cutting performance when machining materials with low and medium strength. Tooth form C is ideal for very deep cuts and large diameters.

When grooves are created, a groove is created in the cutting base, which comes from the oversized pre-cutter. Therefore, a straight cut base is not obtained. The pre-cutter is 0.1-0.3 mm higher in radius than the recutting tooth. This gives large saw blades better guidance and thus a more accurate cut.

HSS cutting material

Metal circular saws made of HSS cutting material can be used in materials up to 1000 N/mm2. Under certain conditions, this cutting material can also be used in materials up to 1300 N/mm2 (increased wear behaviour). The cutting material has a high bending strength and can be used in unstable machine conditions. The cutting speed is relatively low when machining with this cutting material.

HSSE cutting material

Metal circular saws made of HSSE cutting material can be used in materials up to 1300 N/mm2. Due to the cobalt addition even difficult materials with high toughness or hardness can be machined. This cutting material has a high bending strength and can be used in unstable machine conditions. The cutting speed can be increased moderately compared to HSS circular saws.