Bedienungsanleitung Holzmann HBS 300J (Seite 19 von 30) (Deutsch, Englisch)

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7.3 Tensioning the blade

 CAUTION! Remove the tension from

the blade if the bandsaw is not going to

be used for some time. Be sure to re-

tension the blade before you start the

machine.

 Turn the tightening screw (9) for ten-

sioning the blade (25) in a clockwise di-

rection.

 The correct blade tension can be

checked by applying pressure to the

side of the blade with your finger,

somewhere in the middle between the

two blade pulleys (7+8). You should

only be able to bend the blade (25)

very slightly (approx. 1-2mm).

 CAUTION! The blade may break if the

tension is too high. BEWARE IF INJURY!

If the tension is too low, the powered

blade pulley (7) will spin while the

blade does not move.

7.4 Adjusting the blade

 Undo the fasteners (13) and open the

side cover (12).

 Turn the upper blade pulley (8) slowly

in a clockwise direction. The blade (25)

should run centrally on the blade pulley

(8). If it does not, the angle at which

the upper blade pulley (8) tilts must be

adjusted.

 If the blade (25) runs more towards the

rear of the blade pulley (8), i.e. towards

the machine housing (24), the setting

screw (22) must be turned in an anti-

clockwise direction. Then turn the blade

pulley (8) slowly with the other hand to

check the position of the blade.

 If the blade (25) runs towards the front

edge of the belt pulley (8), the setting

screw (22) must be turned in a clock-

wise direction.

 After adjusting the upper blade pulley

(8), check the position of the blade (25)

on the lower blade pulley (7). Again,

the blade (25) should run in the middle

of the blade pulley (7). When adjusting

the upper blade pulley you have to turn

it several times until the adjustment

has an effect on the position of the

blade on the lower blade pulley.

 When adjustment has been completed,

close the side cover (12) again and se-

cure it with the fasteners (13).

7.5 Adjusting the blade guide (Fig. 11-

13)

Whenever you change the blade you must re-

set both the support bearings (30+31) and the

guide pins (28+29).

7.5.1 Upper support bearing (Fig. 11)

 Undo the screw (33).

 Move the support bearing (30) s that it

is almost touching the blade (25).

There should be a gap of approx.

0,5mm.

 Re-tighten the screw.

7.5.2 Setting the lower support bearing

(31)

 Disassemble the saw blade (15).

 Adjust in the same way that the upper

support bearing was adjusted.

 The blade (25) is only supported by the

support bearings (30+31) during cut-

ting. During idle run the blade should

not touch the ball bearings.

7.5.3 Setting the upper guide bearings

(Figure 11)

 Undo the screw (35).

 Move the mount (36) of the guide bear-

ings (28) so that there is a gap of ap-

prox. 1mm between the front edge of

the guide bearings (28) and the gullet

of the blade in front.

 Re-tighten the screw (35)

 CAUTION! The blade will be rendered

useless if the teeth touch the guide

bearings while the blade is running.

 Undo the screws (37)

 Move the two guide bearings (28) to-

wards the blade so that there is a gap

of approx. 0,5mm between the guide

bearings (28) and the blade (25).

 Re-tighten the screws (37).

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