Bosch GBH 3-28 DRE - Инструкция по эксплуатации - Страница 17

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Bosch Power Tools

1 619 92A 06A | (2.10.13)

Changing the Tool

The dust protection cap 

4

 largely prevents the entry of drilling 

dust into the tool holder during operation. When inserting the 
tool, take care that the dust protection cap 

4

 is not damaged.



A damaged dust protection cap should be changed im-
mediately. We recommend having this carried out by 
an after-sales service.

Inserting SDS-plus Drilling Tools (see figure F)

The SDS-plus drill chuck allows for simple and convenient 
changing of drilling tools without the use of additional tools.

– GBH 3-28 DFR: Insert the SDS-plus quick change chuck 

2

.

– Clean and lightly grease the shank end of the tool.
– Insert the tool in a twisting manner into the tool holder until 

it latches itself.

– Check the latching by pulling the tool.

As a requirement of the system, the SDS-plus drilling tool can 
move freely. This causes a certain radial run-out at no-load, 
which has no effect on the accuracy of the drill hole, as the 
drill bit centres itself upon drilling.

Removing SDS-plus Drilling Tools (see figure G)

– Push back the locking sleeve 

5

 and remove the tool.

Inserting Drilling Tools without SDS-plus 
(GBH 3-28 DRE)
Note: 

Do not use tools without SDS-plus for hammer drilling 

or chiselling! Tools without SDS-plus and their drill chucks are 
damaged by hammer drilling or chiselling.

– Insert a key type drill chuck 

16

 (see “Changing the Key 

Type Drill Chuck”, page 16).

– Open the key type drill chuck 

16

 by turning until the tool 

can be inserted. Insert the tool.

– Insert the chuck key into the corresponding holes of the 

key type drill chuck 

16

 and clamp the tool uniformly.

– Turn the mode selector switch 

9

 to the “drilling” position.

Removing Drilling Tools without SDS-plus 
(GBH 3-28 DRE)

– Turn the sleeve of the key type drill chuck 

16

 with the drill 

chuck key in anticlockwise direction until the drilling tool 
can be removed.

Inserting Drilling Tools without SDS-plus (GBH 3-28 DFR) 
(see figure H)
Note: 

Do not use tools without SDS-plus for hammer drilling 

or chiselling! Tools without SDS-plus and their drill chucks are 
damaged by hammer drilling or chiselling.

– Insert the quick change keyless chuck 

1

.

– Firmly hold the retaining ring 

21

 of the quick change 

chuck. Open the tool holder by turning the front sleeve 

20

until the tool can be inserted. Tightly hold the retaining ring 

21

 and firmly turn the front sleeve 

20

 in the direction of the 

arrow until a distinct latching noise can be heard.

– Check the tight seating by pulling the tool.

Note: 

If the tool holder was opened to the stop, then the latch-

ing noise possibly may be heard while closing the tool holder 
and the tool holder will not close.
In this case, turn the front sleeve 

20

 once in the opposite di-

rection of the arrow. Afterwards, the tool holder can be 
closed (tightened) again.

– Turn the mode selector switch 

9

 to the “drilling” position.

Removing Drilling Tools without SDS-plus (GBH 3-
28 DFR) (see figure I)

– Firmly hold the retaining ring 

21

 of the quick change 

chuck. Open the tool holder by turning the front sleeve 

20

in the direction of the arrow until the tool can be removed.

Dust Extraction with the Dust Extraction 
Attachment (Accessory)



Dusts from materials such as lead-containing coatings, 
some wood types, minerals and metal can be harmful to 
one’s health. Touching or breathing-in the dusts can cause 
allergic reactions and/or lead to respiratory infections of 
the user or bystanders.
Certain dusts, such as oak or beech dust, are considered 
as carcinogenic, especially in connection with wood-treat-
ment additives (chromate, wood preservative). Materials 
containing asbestos may only be worked by specialists.

– As far as possible, use a dust extraction system suita-

ble for the material.

– Provide for good ventilation of the working place.
– It is recommended to wear a P2 filter-class respirator.

Observe the relevant regulations in your country for the 
materials to be worked.



Prevent dust accumulation at the workplace. 

Dusts can 

easily ignite.

Mounting the Dust Extraction Attachment (see figure J)

For dust extraction, the dust extraction attachment (accesso-
ry) is required. When drilling, the dust extraction attachment 
retracts so that the attachment head is always close to the 
surface at the drill hole.

– Press the button for depth stop adjustment 

10

 and remove 

the depth stop 

11

. Press button 

10

 again and insert the 

dust extraction attachment into the auxiliary handle 

12

from the front.

– Connect an extraction hose (diameter 19 mm, accessory) to 

the extraction sleeve 

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 of the dust extraction attachment.

The vacuum cleaner must be suitable for the material being 
worked.

– When  vacuuming  dry  dust  that  is especially detrimental to 

health or carcinogenic, use a special vacuum cleaner.

Adjusting the Drilling Depth on the Dust Extraction At-
tachment (see figure K)

The required drilling depth

X

 can also be adjusted when the 

dust extraction attachment is mounted.

– 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.

– Loosen the wing bolt 

26

 on the dust extraction attach-

ment.

– Without switching the power tool on, apply it firmly to the 

drilling location. The SDS-plus drilling tool must face 
against the surface.

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