Bosch GBH 18V-26 - Инструкция по эксплуатации - Страница 21

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21

Bosch Power Tools

1 609 92A 3DF | (27.3.18)

Reversing the rotational direction

The rotational direction switch 

8

 is used to reverse the rota-

tional direction of the machine. However, this is not possible 
with the On/Off switch 

10

 actuated.

Right rotation:

 Slide the rotational direction switch 

8

 all 

the way to the left.

Left rotation:

 Slide the rotational direction switch 

8

 all the 

way to the right.

Set the direction of rotation for hammer drilling, drilling and 
chiselling always to right rotation.

Switching On and Off

To save energy, only switch the power tool on when using it.

–

To 

start

 the machine, press the On/Off switch 

10

.

When starting the machine for the first time, a starting delay 
is possible, as the electronic system of the power tool has to 
configure itself first.

–

To 

switch off

 the machine, release the On/Off switch 

10

.

Setting the Speed/Impact Rate

The speed/impact rate of the switched on power tool can be 
variably adjusted, depending on how far the On/Off switch 

10

is pressed.

Light pressure on the On/Off switch 

10

 results in low 

speed/impact rate. Further pressure on the switch increases 
the speed/impact rate.

Electronic Precision Control (EPC) (see figure A)

EPC assists you when working with impact in sensitive mate-
rials by ensuring slow start-up and reduced operating speed.

–

Slide the EPC switch 

19

 to the desired position.

Overload Clutch



If the tool insert becomes caught or jammed, the drive 
to the drill spindle is interrupted. Because of the forces 
that occur, always hold the power tool firmly with both 
hands and provide for a secure stance.



If the power tool jams, switch the machine off and loos-
en the tool insert. When switching the machine on with 
the drilling tool jammed, high reaction torques can oc-
cur.

Rapid Shut-off (Kickback Control)

The rapid shut-off feature (Kickback Control) provides better 
control over the power tool to increase user protection com-
pared to power tools that do not have Kickback Control. The 
power tool will switch off if it suddenly and unforeseeably ro-
tates around the drilling axis.

–

To 

restart the machine

, release the On/Off switch and 

then actuate again.

Rapid shut-off is indicated by flashing of the worklight 

14

 on 

the power tool.

Working Advice

Adjusting the Drilling Depth (see figure O)

The required drilling depth 

X

 can be set with the depth stop 

17

.

–

Press the button for the depth stop adjustment 

15

 and in-

sert the depth stop into the auxiliary handle 

16

.

The knurled surface of the depth stop 

17

 must face down-

ward.

–

Insert the SDS-plus drilling tool to the stop into the SDS-
plus tool holder 

3

. Otherwise, the movability of the SDS-

plus drilling tool can lead to incorrect adjustment of the 
drilling depth.

–

Pull out the depth stop until the distance between the tip of 
the drill bit and the tip of the depth stop corresponds with 
the desired drilling depth 

X

.

Changing the Chiselling Position (Vario-Lock)

The chisel can be locked in 44 positions. In this manner, the 
optimum working position can be set for each application.

–

Insert the chisel into the tool holder.

–

Turn the mode selector switch 

13

 to the “Vario-Lock” posi-

tion (see “Setting the operating mode”, page 20).

–

Turn the tool holder to the desired chiselling position.

–

Turn the mode selector switch 

13

 to the “chiselling” posi-

tion. The tool holder is now locked.

–

For chiselling, set the rotation direction to right rotation.

Inserting Screwdriver Bits (see figure P)



Apply the power tool to the screw/nut only when it is 
switched off. 

Rotating tool inserts can slip off.

To work with screwdriver bits, a universal bit holder 

31

 with 

SDS-plus shank (accessory) is required.

–

Clean the shank end of the adapter shank and apply a light 
coat of grease.

–

Insert the universal bit holder with a turning motion into 
the tool holder until it automatically locks.

–

Check the locking effect by pulling the universal bit holder.

Position for 

drilling

 without impact in wood, 

metal, ceramic and plastic as well as for 
screwdriving

Vario-Lock

 position for adjustment of the 

chiselling position

The mode selector switch 

13

 does not latch in 

this position.

Position for 

chiselling

Position for maximum operating speed

Position for slow start-up and reduced operating 
speed

OBJ_DOKU-52352-003.fm  Page 21  Tuesday, March 27, 2018  11:11 AM