The ruler is applied on the width of the band saw blade, the tensioning grade being given by the dimension of the gap between the blade and the ruler. Usually the tension is measured with a ruler by determining the size of the occurring lighted slit.
The slit occurs when the blade is lifted from the stand, its value being related to the blade dimension and the shapes of the fly-wheels surfaces.
|Blade width (mm)
|Lighted slit size (mm)
The table shows the approximate recommended values in a certain number of cases. A blade that is properly tensioned must perfectly fit the wheel.
|Tensioning control ruler 200 mminfo
|Special tensioning control ruler 250 mminfo
The straightness of the saw blade back line is verified with 1500 mm long rulers. Its maximum deviation varies between 0,4 and 1500 mm. The purpose of the straightening is to lengthen the back edge of the blade to make it more stable during the cutting process.
It is the blade back edge curvature that makes the tension to concentrate on the teeth line when the blade is mounted on the saw. This fact gives the required rigidity and stability of the teeth line, allowing the blade to perform a straight cut.
|Tension checking ruler 1500 mminfo
|Tension checking ruler with comparison measurerinfo
|with comparison measurer
This specialized device measures the tensioning of the band saw blades.
|Tensioning controlling and measuring device BACHOinfo
See also tensioning services