Braun BBD6W User manual

4920-BBD6W/B page 1
Braun Maschinenfabrik Gesellschaft m.b.H.
Gmundner Straße 76 - 4840 Vöcklabruck
Tel. [phone]*
www.braun.at
I N S T R U C T I O N M A N U A L
BRAUN
DRILL RIG
B B D 6 W
We always try to keep our machines on the latest level of development.
The construction and accordingly also the instructions for operation (description, drawings, measures and weights)
are therefore subject to change without notice.

4920-BBD6W/B page 2
Braun Maschinenfabrik Gesellschaft m.b.H.
Gmundner Straße 76 - 4840 Vöcklabruck
Tel. [phone]*
www.braun.at
C O N T E N T S
page
1. General safety instructions 3
2. Risks and their reduction 4, 5
3. Description of the system and instructions for installation 6
4. Technical data 7
5. Technical description 8, 9
6. Functional description and taking up operation 10, 11
7. Defects - reasons - removal 12
8. Maintenance instructions 13
9. Drawings drawing n°
drill rig BBD6W usable length 760 mm- assembly drawing (001261) 4920- BBD6W-NL7/00
sliding carriage BBD6W - assembly drawing (001264) 4920-BBD6W/00/1
mitre gear KS - assembly drawing (001337) 4920-75
base support BLH6 - assembly drawing (001360) 4920-BLH6/00.2
with parts list 001360

4920-BBD6W/B page 3
Braun Maschinenfabrik Gesellschaft m.b.H.
Gmundner Straße 76 - 4840 Vöcklabruck
Tel. [phone]*
www.braun.at
1.) General Safety Instructions
To ensure your and the safety of other persons watch the following points when handling the
equipment:
Any person intended for operation, maintenance and repair of the equipment, must be
familiar to the function and safety of the same.
Check the orderly condition and the safety of machines, tools, operation mediums and other
devices before you take up operation!
Always bear in mind that disturbances may result in an accidence.
Never open an equipment without switching off the power supply before.
Never repair any electric equipment yourself.
Such defects exclusively have to be repaired by an expert.
In no way safety devices may be removed.
During repair and maintenance works there is the danger that third persons start the machine
by mistake.
Therefore block up the switches with reliable means before you start working.
During the drilling and cutting work dangerous zones must be barricaded and marked in a
suitable way or safeguarded by a warning sentry against trespassers.
Persons occupied with demolishing works must wear protective helmets and also ear plugs.
Self-supporting constructions, like balconies and similar must be supported in a solid way or
safeguarded against crashing in another way, before parts, which secure the fixing or
anchoring of their pedestals, are demolished.
Any single structural parts which are detached from the construction, must be safeguarded in
a way, making their crash on an operator's position or lower ceilings impossible.
Besides this the special instructions for the assembly of the equipment and for the safety
must be watched and their strict observance secured.

4920-BBD6W/B page 4
Braun Maschinenfabrik Gesellschaft m.b.H.
Gmundner Straße 76 - 4840 Vöcklabruck
Tel. [phone]*
www.braun.at
2.) Possible risks when working with core drilling equipment
2.1 Statics of building construction
Before starting operation let a specialist check whether the borehole(s) intended to be made are a
risk for the statics of the building. Only realise the jobs if they have no influence on the statics of
the construction.
2.2 Fastening
If the drilling stand is fastened insufficiently, the possibility that somebody becomes insured
through the falling down of the drilling stand or rotation around the drilling axle is high.
So it is very important to watch the instructions for installation exactly.
2.3 Electric wires
Ensure yourself that no life wires are around the place where
the borehole shall be made. If you cannot exclude this let an electrician put your equipment to
earth as protection.
Ensure that your equipment is protected by an earth leakage circuit breaker.
Always wear shoes with rubber bottom!
2.4 Power failure
If you use a vacuum pump for the fastening of the core drilling equipment place it where you can
continuously watch the vacuum gauge during operation.
Immediately switch off the drilling drive when the vacuum pressure falls below 0,7 bar because
of a power failure or some other defect and make sure that the core drilling equipment cannot fall
down.
In case of a power failure switch off any electric equipment to prevent accidents in case the
machine starts again suddenly.
2.5 Loose bolted connections
Before starting operation make sure that all bolted connections are tightened. Loose parts can
result in accidents!

4920-BBD6W/B page 5
Braun Maschinenfabrik Gesellschaft m.b.H.
Gmundner Straße 76 - 4840 Vöcklabruck
Tel. [phone]*
www.braun.at
2.6 Noise
Use suitable ear plugs during drilling operation to avoid an impairment of your hearing.
2.7 Drill cores and other pieces of concrete
Make sure that the drill core or other loose pieces of concrete cannot become dangerous for any
persons or things by falling down after perforation (especially when perforating ceilings).
Safeguard these parts with supports or other suitable measures.
2.8 Unintentional start of the drilling motor
During installation, maintenance work or changing of tools you must in any case plug-off the
machine.
That means you must plug-off the electric drilling motor or if it is a hydraulic drive the plug of
the hydraulic unit and ensure that nobody can connect it with the power supply again without
your knowledge.
If you have a hydraulic drive it is sufficient if you disconnect the hydraulic hoses from the
hydraulic motor (snap closure plug-couplings).

4920-BBD6W/B page 6
Braun Maschinenfabrik Gesellschaft m.b.H.
Gmundner Straße 76 - 4840 Vöcklabruck
Tel. [phone]*
www.braun.at
3.) Description of system and instructions for installation
The drilling equipment is used for drilling cores in steel concrete, stone and similar materials.
Boreholes in any positions can be made.
Instructions for installation:
1.) Check the kind of underground (concrete, burnt brick, broken stones a.s.o.).
2.) How is the load and the acting force on the fastening.
3.) Choose then with this knowledge the anchor suitable for these conditions.
4.) Set the anchors exactly according setting instructions of the supplier.
For standard equipment the fastening is intended with dowels M 16(M 12) and hexagon dead
screw M 16 (M 12) x 90.
For safety reasons the drilling stand must be tightened with at least 2 dowels.
The fastening (dowel) must be able to carry a tractive load of at least 15 kN.
For the exact adjustment of the drilling equipment use the 4 adjusting screws M 16 on the base
plate.

4920-BBD6W/B page 7
Braun Maschinenfabrik Gesellschaft m.b.H.
Gmundner Straße 76 - 4840 Vöcklabruck
Tel. [phone]*
www.braun.at
4.) Technical data BBD6W
max. core bit diameter .......................................... 1000 mm
(with 2 pieces connecting link BHZ 8)
max. output power drill rig ................................... 18 kW
usable length ......................................................... 760 mm (standard)
weight ................................................................... 49 kg (without motor)

4920-BBD6W/B page 8
Braun Maschinenfabrik Gesellschaft m.b.H.
Gmundner Straße 76 - 4840 Vöcklabruck
Tel. [phone]*
www.braun.at
5.) Technical Description
5.1 Main parts of the drilling stand
- Base plate with support yoke and transport wheels
- Guide tubes with support and column plate
- Sliding carriage
- Mitre gear with hand wheel
Attachments: (Delivery upon request)
Type
- Base support for hydraulic drilling BLH 6
Hydraulic motor OMR/OMS
- Base support for hydraulic drilling BLH 2,5
Hydraulic motor OMR
Connecting link for BLH 2,5 BHZ 4
- Hydraulic units according technical description
resp. leaflet
- Possibilities for combination of drilling stand see leaflet resp. price lists
with electric drilling drive (for small core
bit diameters)
- electric or hydraulic feed drives
5.2 Characteristics
5.2.1 Base plate
There are 3 elongated slots in the solid base plate, which has to be fixed with plugs and
screws M 16.
The adjusting of the base plate has to be made by means of 4 adjusting screws M 16 (part 32).
To prevent the tipping forward of the drilling stand a support yoke is mounted.
The middle of the base plate is marked on the aluminium casting.
Transport wheels on the backside make a quick and easy transport between the single drilling
procedures possible.

4920-BBD6W/B page 9
Braun Maschinenfabrik Gesellschaft m.b.H.
Gmundner Straße 76 - 4840 Vöcklabruck
Tel. [phone]*
www.braun.at
5.2.2 Guide tubes with support
The 2 tubes are firmly fixed on the ground plate and held on distance through the column plate ,
so an exact guidance of the sliding carriage is ensured.
5.2.3 Mitre gear (feed unit)
The mitre gear equipped with bevel gear wheels is fixed in the slotted bore hole of the ground
plate.
The connection with the trapezoidal spindle is made with a coupling (with clamping pin safety
device = shear pin).
Adjusting is made with a solid hand wheel.
5.2.4 Drilling drive and attachments
The hydraulic base support is designed for the use of Danfoss OMS-hydraulic motors.
Using any other motor you need an adapter (see price list resp. leaflet).

4920-BBD6W/B page 10
Braun Maschinenfabrik Gesellschaft m.b.H.
Gmundner Straße 76 - 4840 Vöcklabruck
Tel. [phone]*
www.braun.at
6.) Functional description and taking up operation
6.1 Prepare boreholes for plugs according to core bit diameter and kind of concrete (1, 2
or 3 boreholes) for M 16 and place drilling stand. Fasten with M 16.
Tenacity of the anchoring at least 15 kN !
6.2 Slip the hydraulic base support with assembled hydraulic motor over the plug bolts with nuts
on the sliding carriage (part 11).
The drilling motor is fixed by inserting the 4 slotted washer (part 29) and tightening the nut.
6.3 Fixing of the core bit on the drilling motor
a) Core bit with intermediate flange, for large borehole diameters (up from ø 600 mm),
must be directly flanged to the base support flange.
ATTENTION: If the hydraulic drilling motor is working with a pressure of more
than 160 bar (for ex. RE24) the core bit always must be
"DIRECTLY FLANGED" independent from the diameter.
In case of a higher pressure the max. allowed torque of
the 1 1/4" UNC-spigot could be exceeded and this could lead to
a breakdown.
b) Using a core bit with connection holding fixture 1 1/4" UNC 7 thread winding the thread
flange has to be fixed between base support flange and core bit.
If you fix the core bit in this way make sure that the drive has the right direction of
rotation (to prevent that the core bit becomes loose when taking up operation).
Attention: Make sure that the core bit is firmly fastened to the drilling motor!
6.4 Connect cooling water piping to drilling motor.
The minimum water quantity depends on the borehole diameter and is between 3 and 15
l/min.
Details are shown in the technical brochure of the producers of diamond hollow drillers.
6.5 Only if the drilling stand, drilling drive and core bit are sufficiently fastened,
the drilling drive may be connected to the power supply resp. to the hydraulic
unit !

4920-BBD6W/B page 11
Braun Maschinenfabrik Gesellschaft m.b.H.
Gmundner Straße 76 - 4840 Vöcklabruck
Tel. [phone]*
www.braun.at
TAKING UP OPERATION
6.6) The core drilling equipment is ready for operation.
Switch on:
1.) drilling drive (hydraulic unit)
2.) water supply.
6.7) In case of an eventual tool change in any case disconnect the equipment from the power
supply (take-off power supply plug or disconnect the hydraulic hoses).
6.8) Take back the tool with switched on drilling motor after the borehole is finished to avoid a
jamming.
6.9) In any case take off the power supply plug and disconnect the hydraulic hoses before
disassembling the core drilling equipment!
6.10) When the operation has been finished equipment and tools must be carefully cleaned; so
lifetime and safety will be increased essentially.

4920-BBD6W/B page 12
Braun Maschinenfabrik Gesellschaft m.b.H.
Gmundner Straße 76 - 4840 Vöcklabruck
Tel. [phone]*
www.braun.at
7.) Defects - Reasons - Removal
The lifetime of the core bits depends on the material to be drilled and the stability of the drilling
stand, but also the number of rotations, feed power and water cooling are influencing these
parameters essentially.
In the following some defects and hints for their removal:
DEFECTS
REASONS
ELIMINATION
Waved wall -
excessive lateral
wear
Machine:
repair machine
insufficient fastening
faulty concentric running of the
spindle
play of the guiding, spindle or bearing
parallelism of the guiding out of
tolerance
feed pressure too high
reduce feed pressure
Tool (core bit):
excessive lateral stroke
repair or change core bit
unusual concentric running
excessive water supply
supply less water
excessive wear
of the diamond
layer
number of rotations too low
correct parameters for operation
feed too high
too less cooling water
wrong type of tool
change tool type
tool is dull
tool not suitable for material
sharpen tool with suitable material
number of rotations too high
correct steps of operation
feed to low or too
high excessive vibrations

4920-BBD6W/B page 13
Braun Maschinenfabrik Gesellschaft m.b.H.
Gmundner Straße 76 - 4840 Vöcklabruck
Tel. [phone]*
www.braun.at
8.) Maintenance instructions
Periodical maintenance is decisive for the lifetime of the equipment and decreases
the accident risk.
According to our experience the following points must be observed:
The guiding column and the feed spindle as well as bolts and screws must be kept clean and
greased if necessary.
The trapezoidal nut (part 3) is worn out quickly if the feed spindle is not kept clean.
Every week the points of lubrication on the feed slide must be greased again (use
noncorrosive grease).
A thin film of lubrication must cover the guide columns to avoid the drying of mud and dust
and also to prevent a wear-out of the guide bushing.
Every week resp. after accidents all parts must be checked with regard to cracks and must be
changed if necessary
(Do not weld aluminium-cast parts).
The mitre wheel gearing is filled with gear slime, this must be renewed after repair works
(for example changing of the bevel gear wheels).
The grooved ball bearings are greased for lifetime.
The equipment must be cleaned carefully when the drilling work is finished.
After taking up operation for the first time or after repair works all screws must be controlled
and tightened if necessary to avoid any damages in the following.

Bohrständer / Drill Rig / Carotteuse BBD6W
Stückliste Artikel Nummer: 001261
Pos. Stk. Art.Nr.: description Norm Material
1 1 001264 sliding carriage complete 4920-BBD6W/00/1
2 1 001263 base plate 4920-BBD6W/00/2
3 1 001265 column plate 4920-BBD6W/00/4
4 1 001337 mitre gear 4920-75
5 2 005274 guiding tube - usable length 760 mm 4920-BBD6W/5.1
5 2 005275 guiding tube - usable length 1000 mm
5 2 005276 guiding tube - usable length 1200 mm
5 2 001269 guiding tube - usable length 1500 mm
6 1 001271 spindle - usable length 760 mm 4920-BBD6W/00/6
6 1 001272 spindle - usable length 1000 mm
6 1 001273 spindle - usable length 1200 mm
6 1 001274 spindle - usable length 1500 mm
7 2 001276
supporting tube - usable length 760 mm
4920-BBD6W/00/5
7 2 001277 supporting tube - usable length 1000 mm
7 2 001278 supporting tube - usable length 1200 mm
7 2 001279 supporting tube - usable length 1500 mm
8 1 001285 spindle fixture 4920-BBD6W/00/3
9 1 001283 supporting yoke 4920-B6AB.1
10 1001324 transport wheels complete 4920-B2TR
11 2001286 bracket 4920-BBD6W/13 St
12 1001348 hand wheel with grip 4920-75/9 Al
200 4002120 hexagon screw DIN 931 - M 12 x 50 verzinkt
201 2002094 hexagon screw DIN 933 - M 12 x 25 verzinkt
202 6002088 hexagon screw DIN 933 - M 8 x 30 verzinkt
203 6001669 nut DIN 934 M8 verzinkt
204 2004429 disc DIN 7349 - M12 verzinkt
205 6003164 washer spring DIN 127 - A 8 verzinkt
206 4004427 disc DIN 134 M12 verzinkt
BBD6W_001261_Zusammenstellung001 e.xls 1

Schlitten / Feed Slide / Chariot
Stückliste Artikel Nummer: 001264
Pos. Stk. Art.Nr.: Norm Material
1 1 009031 slide 4920-BBD6W/2
2 1 001281 trapezoidal nut 4920-BBD6W/7 Rotguß
3 1 001282 fixing of trapezoidal nut 4920-110 St37-2K
4 4 001242 disc with wire 4920-101.1
5 4 001491 bolt 4920-BHZ 8.1/2
6 4 005267 guide bushing diam.49.5 4920-111.1 PAS-LX
100 4001288 wiper SB-50-60-7/10
200 2005503 grease nipple DIN 71412 - AM10x1
201 2002087 hexagon head screw DIN 933 - M8 x 25 verzinkt
202 4004430 cheese head screw DIN 84/A M5x12 verzinkt
203 8001671 hexagon nut DIN 934 - M12 verzinkt
204 4005499 circlip DIN 472 - 60 x 2.00 verzinkt
205 2003164 lock washer DIN 127 - B 8 verzinkt
BBD6W_001264_Schlitten e.xls 1