Berner 341742, Original Instructions Manual

Page: 18 / 206

18 | English
1 609 92A 451 • 27.11.17

Select a diamond cup wheel suitable for the
material to be worked. Observe the material
information on the packaging.
 Before assembling, clean the clamping set,
spindle and diamond cup wheel.
 Observe the dimensions of the diamond cup
wheel. The mounting hole diameter must fit
the mounting flange. Do not use reducers or
adapters. The mounting hole of the diamond
cup wheel may not be enlarged.

The allowable maximum speed of the diamond
cup wheel must correspond with the maxi-
mum speed of the power tool.
 To prevent damage, dismount diamond cup
wheels before transporting the power tool.
 In order to achieve maximal working results,
apply only low pressure when grinding; do not
wedge, jam, jolt, jerk or plunge.

Diamond cup wheels can heat up considerably
while working; do not touch them before they
have cooled down.
 Do not place the power tool down until after
the diamond cup wheel has come to a com-
plete stop.

Use the two-pin spanner to release and tight-
en the clamping nut.
Product Description and
Specifications
Read all safety warnings and all in-
structions. Failure to follow the warn-
ings and instructions may result in
electric shock, fire and/or serious inju-
ry.
Intended Use
The machine is intended for dry grinding, deburr-
ing and smoothing mainly mineral materials (such
as concrete, stone, marble and pavement/plaster
flooring). It is also suitable for removing protective
coating and adhesive residue. The machine may
be used exclusively in conjunction with a diamond
cup wheel and a vacuum cleaner of dust category
M.
Product Features
The numbering of the product features refers to the
illustration of the machine on the graphics page.
1 On/Off switch
2 Auxiliary handle
3 Guard and extraction hood
4 Two-piece brush collar (Item no. 358530)
5 Opening
6 Movable part of the guard
7 Locking device
8 Vacuum connection
9 Spindle lock button
10 Vacuum hose*
11 Handle (insulated gripping surface)
12 Grinder spindle
13 Mounting flange with O-ring
14 Diamond cup wheel*
15 Clamping nut
16 Quick-clamping nut
17 Two-pin spanner for clamping nut
*Accessories shown or described are not part of the
standard delivery scope of the product. A complete
overview of accessories can be found in our acces-
sories program.
Technical Data
Noise/Vibration Information
Sound emission values determined according to
EN 60745-2-3.
Typically the A-weighted noise levels of the product
are: Sound pressure level 92 dB(A); Sound power
level 103 dB(A). Uncertainty K =3 dB.
Wear hearing protection!
Vibration total values a
h
(triax vector sum) and un-
certainty K determined according to EN 60745-2-3:
a
h
=4.5 m/s
2
, K=1.5 m/s
2
.
Concrete Grinder BCG 1500W
Art. No. 341742
Rated power input W 1500
Output power W 820
Rated speed min
-1
9300
Diamond cup wheel diame-
ter mm 125
Thread of grinder spindle M 14
Soft starting

Restarting Protection

Reduced starting current

Constant electronic control

Overload Protection

Grinding close to the edge

Weight according to EPTA-
Procedure 01:2014 kg 2.6
Protection class / II
The values given are valid for a nominal voltage [U] of
230 V. For different voltages and models for specific coun-
tries, these values can vary.
OBJ_BUCH-3368-001.book Page 18 Monday, November 27, 2017 11:05 AM