Tool life

Factors determining tool life

For ensuring a blade’s long life we must first have all the right conditions guaranteeing the best results.

Factors such as a minimum amount of lubricating oil and functioning brushes for the total removal of chips from the tooth profile are indispensable prerequisites for limited wear and prevention of chip interference during machining.

Brushes positioned correctly up to the base of the tooth groove guarantee the cleaning of the gullet without creating accumulations for the next entry into the cut.

It is always very important to periodically check the oil content of the emulsion with a hand refractometer which should be adjusted to the materials being cut:

  • Free-cutting steel (Minimum 10%)
  • Low carbon structural steel (minimum 10%)
  • Structural tempered steel with medium carbon content (minimum 5%)
  • High carbon steel (Minimum 5%)
  • Cr hardened and tempered steels; CrMo ; NiCrMo (Minimum 5%)
  • Case hardened and spring steels (Minimum 5%)
  • Nitriding steels (Minimum 5%)
  • Bearing steels (Maximum 5%)
  • Hot tool steels (Minimum 10%)
  • Cold tool steels (spray lubrication or Maximum 5%)
  • High speed steels (Minimum 10%)
  • Ferritic and martensitic stainless steels (Minimum 10%)
  • Austenitic, duplex and heat resistant stainless steels (Maximum 15%)
  • Cast iron (Maximum 5%)
  • Nickel alloys (Minimum 15%)
  • Titanium alloys (Maximum 15%)
  • Aluminum (Spray lubrication)
  • Copper, brass (Maximum 5%)
  • Bronze-aluminium (Minimum 10%)


The main purposes of the cooling lubricant are:

  • The transmission of heat from the tool and the chip to the liquid
  • Better sliding friction coefficient related to tool-piece movement
  • Significant reduction in wear from abrasion and oxidation, with linear tool decay
  • Vibration reduction
  • Elimination of chips
  • Complete corrosion protection
  • Better surface finish


With ideal basic conditions, serious consideration must be given to breaking-in the blade, which should be carried out over 15-30 minutes and avoiding vibrations.

The correct break-in parameter settings will be determined by the treatment characteristics of the blade, the material and its size and obviously by the rigidity of the bandsaw.

For the ideal cutting settings, rely on our SEKTOR CUTTING EXPERT program.

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