Husqvarna SMB 70, SMB 70 E manual Maintenance

MAINTENANCE

Sharpening

!WARNING!

The bandsaw blade is sharp and can cause cuts. Warning for personal injury. Wear protective gloves whenever you handle the bandsaw blade.

After sharpening, the bandsaw blade should be set as described in the instructions on the previous page.

The more accurate the sharpening, the straighter and smoother the bandsaw blade runs when cutting the log.

Radii

The radius in the area (A) should be 1-3 mm. A radius under 1 mm increases the risk of cracking.

A radius over 3 mm means that the chips are not broken.

Angles

The clearance angle should be 10-12° and the cutting angle (F) varies depending on the spe- cies of wood as follows:

Hardwoods or frozen timber	7°
Medium hardwoods	10°
Softwoods	14°

Before sharpening, the bandsaw blade’s teeth should be set using the saw setting pliers.

The rake angle should be 90°. See the figure to the right.

Shape of the Tooth

As the bandsaw blade is sharpened it is important that the teeth and tooth valleys keep their original shape.

For optimal results, the bandsaw blade should be sharpened with the grinder. The procedure is described on the following pages.

On delivery, the grinder is adjusted for the correct angles and tooth shape.

FIG. 57

FIG. 58

FIG. 59

FIG. 60

32 – English