Processing machines for levelling, tensioning and straightening band saws of band saw blades

Levelling refers to the process of eliminating irregularities (dents/bumps) in the saw blade. This is usually carried out as the first maintenance work. After being located with a straight edge, dents can be "hammered out" using a ball or club hammer, whereby the weight of the hammer must be matched to the blade thickness. 

The following guidelines apply when doing this:
Hammer weighing 1250 g for blade thicknesses ≤ 1.65 mm
Hammer weighing 1500 g for blade thicknesses > 1.65 mm

Hammers should have soft, rounded striking surfaces so that they do not leave any imprints on the blades, as this could negatively impact on the service life of the blade. 

Tensioning or stretching means extending the middle zone of the saw blade. This is carried out by rolling using a rolling machine. By stretching the middle zone, the toothing side and the rear edge become shorter in relation to the middle. As a result, when fitting the saw blade to the rollers in the sawing machine, the compressive stresses are released and the saw blade forms a curve in the middle. This prevents the saw blade from shifting back and forth at the most convex contact surface of the roller. 

Processing machines for levelling, tensioning and straightening band saws of band saw blades

ISELI R 410 / WVB 360, Manuelle Richtbank und Walzmaschine
R410-R510 / WVB360

Levelling bench and rolling machine for manual straightening and tensioning of band and gang saw blades

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RZ 1

Fully automatic CNC controlled leveling- and tensioning center for band saws

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ISELI MEC 391, Vollautomatische Planiermaschine
MEC 391

Automatic leveling machine

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ISELI MA 1, Mess- und Markiermaschine
MA 1

Fully automatic marking and measuring equipment for testing and protocol-setting on curved saw teeth

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