Changing The Tool - Berner BHD-2/26 830 W Manual Original

OBJ_BUCH-3323-001.book Page 18 Tuesday, September 19, 2017 4:15 PM
Removing the Key Type Drill Chuck
– Push the locking sleeve 5 toward the rear and
pull out the key type drill chuck 17.
Removing/Inserting the Quick Change
Chuck (BHD-2/28 880 W)
– BHD-2/28 880 W: The SDS-plus quick change
chuck 2 can easily be replaced against the quick
change keyless chuck 1 provided.
Removing the Quick Change Chuck (see figure D)
– Pull the lock ring for the quick change chuck 6
toward the rear, hold it in this position and pull
off the SDS-plus quick change chuck 2 or the
quick change keyless chuck 1 toward the front.
– After removing, protect the replacement chuck
against contamination.
Inserting the Quick Change Chuck (see figure E)
– Before inserting, clean the quick change chuck
and apply a light coat of grease to the shank
end.
– Grasp the SDS-plus quick change chuck 2 or the
quick change keyless chuck 1 completely with
your hand. Slide the quick change chuck with a
turning motion onto the drill chuck mounting 19
until a distinct latching noise is heard.
– The quick change chuck is automatically locked.
Check the locking effect by pulling the quick
change chuck.

Changing the Tool

The dust protection cap 4 largely prevents the en-
try of drilling dust into the tool holder during oper-
ation. When inserting the tool, take care that the
dust protection cap 4 is not damaged.
 A damaged dust protection cap should be
changed immediately. 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 con-
venient changing of drilling tools without the use of
additional tools.
– BHD-2/28 880 W: 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 drill-
ing tool can move freely. This causes a certain ra-
dial run-out at no-load, which has no effect on the
accuracy of the drill hole, as the drill bit centres it-
self upon drilling.
1 609 92A 41X • 19.9.17
Removing SDS-plus Drilling Tools (see figure G)
– Push back the locking sleeve 5 and remove the
tool.
Inserting Drilling Tools without SDS-plus
(BHD-2/26 830 W)
Note: Do not use tools without SDS-plus for ham-
mer drilling or chiselling! Tools without SDS-plus
and their drill chucks are damaged by hammer
drilling or chiselling.
– Insert a key type drill chuck 17 (see "Changing
the Key Type Drill Chuck", page 17).
– Open the key type drill chuck 17 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 17 and clamp
the tool uniformly.
– Turn the mode selector switch 11 to the "drilling"
position.
Removing Drilling Tools without SDS-plus
(BHD-2/26 830 W)
– Turn the sleeve of the key type drill chuck 17
with the drill chuck key in anticlockwise direction
until the drilling tool can be removed.
Inserting Drilling Tools without SDS-plus
(see figure H)
Note: Do not use tools without SDS-plus for ham-
mer 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 latching 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 op-
posite direction of the arrow. Afterwards, the tool
holder can be closed (tightened) again.
– Turn the mode selector switch 11 to the "drilling"
position.
Removing Drilling Tools without SDS-plus
(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.
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