DR. BENDER BBM 33 LL extra User manual

DR. BENDER GmbH
Innovative Elektrowerkzeuge
Manual for
drilling motor BBM 33 LL extra
115 V
Valid from 03.2018 Art.-Nr. 200870 Subject to alteration
All rights reserved
DR. BENDER GmbH • D-75382 Althengstett • Tel [phone] • Fax [phone]
Our website address is: http://www.dr-bender.de• eMail: [e-mail]

2
Conformity Declaration
DR.BENDER GmbH
Innovative Elektrowerkzeuge
EC declaration of conformity (EG-RL 2006/42/EG)
Hereby the manufacturer
Dr. Bender GmbH
Industriestrasse 22
75382 Althengstett
declares for the product
BBM 33 LL extra
The named product is conform to the following Council Directives on approximation of laws of the EEC
Member States:
-Council Directive for machinery (2006/42/EC)
-Council Directive for Electromagnetic compatibility (EMC) (2004/108/EG)
-Low Voltage Guide Lines (2006/95/EG)
Conformity with the requirements of this Directives is testified by complete adherence to the following stan-
dards:
EN 50144-1
EN 50144-2-1
EN 55014-1
EN 61000-3-2
EN 61000-3-3
EN 55014-2
EN 61029-1
The instructions contained in the operating manual for installation and start up the machine have to be fol-
lowed.
Authorised Person for Documentation:
Min Wei
c/o Dr. Bender GmbH
Industriestrasse 22
75382 Althengstett
Deutschland
DR.BENDER GmbH Althengstett, 30.07.2018
Industriestraße 22
D-75382 Althengstett
Tel. [phone], Fax [phone]
Min Wei, Managing Director
This Declaration does not include Assurance of Product Properties.
The Safety Instructions of the enclosed Product Documentation have to be respected.

3
Contents
page
Conformity declaration 2
Contents 3
1.0 Symbol- and Pictograph description 4
1.1 Function description 4
2.0 General instructions 5
2.1 Application 5
2.2 Safety 5
3.0 Transport and storage 6
3.1 Transport 6
3.2 Storage 6
4.0 Main dimensions and technical data 7
4.1 Dimensions 7
4.2 Technical data 7
4.3 Noise emissions and vibrations [EN 50144] 8
5.0 Commissioning 8
5.1 Changing gear 9
5.2 Safety coupling 9
5.3 Core bits 9
5.4 To change a core bit 9
6.0 Safety instructions 10
7.0 Servicing and care 11
7.1 Daily care 11
7.2 After approx. 150 hours of use 11
7.3 After approx. 250 hours of use 11
7.4 Quarterly 11
8.0 Speed adjustment dependent on the cutting speed 12
9.0 Warranty 13
10.0 General safety instructions 13
11.0 Spare parts list 14
11.1 Stone drilling machine complete 14
11.2 Motor complete 16
11.3 Gear complete 18
11.4 Connection cables and accessories 20

4
Warning
The safety instructions set out in this operating manual must be followed at all
costs.
Special designs and versions may differ from the standard models in terms of their technical details. If any
points are unclear, we urgently recommend that you contact DR.BENDER GmbH, indicating the machine
type and machine number.
1.0 Symbol- and Pictograph description
This sign tells you rules, if you not pay attention for this your health and the function of
the machine is in danger. You have no warranty if the machine breaks down because
you not looking about this.
1.1 Function description
Nameplate
Water connection
Gear control
Switch on/off
Drill-spindle

5
2.0 General instructions
2.1 Application
The core drills can be used for the purposes outlined by the data on the model plate. If you are using spe-
cial machines, the details in the quotation and order confirmation also apply.
The core drills are supplied as standard in protection class I, only this can guarantee the full high quality
production of the residual current-operated circuit-breaker or PRCD switch.
If you use suitable core bits, you will be able to drill holes in the most diverse material types:
- Concrete (even if it contains thick reinforcement steel)
- Sandstone and limestone
- All building materials for solid walls
- Asphalt floors
The core drills comply with the regulations issued by the ”Stone and Earth” Professional Association issued
in July 1989. They are machines of category II, which means that they must be placed on stands and be
stable (pursuant to DIN 57100 or VDE 0100), the stand must be equipped with
- a reversing block, and
- a water suction device.
The machine must be connected to the 230 V mains
- direct using a personal safety switch (residual current-operated circuit-breaker or PRCD), or
- using a coded (1h) plug to a safety box (IP 44) with a residual current-operated circuit-breaker.
2.2 Safety
Warning
Before using the machine for the first time, check that the conformity of the data
on the model plate with the mains voltage and frequency. Voltage deviations of ±
5 % and/or voltage deviations of ± 2 % are permissible. Repairs must only be
completed by quality persons who have suitable training and qualifications.
The following points are to be given special attention:
- the technical data and details of the permitted use of the machine (commissioning, ambient and
operating conditions) which are set out in the catalogue, the operating manual, the model plate
data and other product information,
- the relevant accident prevention regulations
- the correct use of tools
- the use of personal safety equipment

6
3.0 Transport and storage
3.1 Transport
Warning
The core drills are to be checked for signs for transport damage on receipt. Any
damage must be documented in writing.
3.2 Storage
If possible, the storage site should be dry, clean and have a constant temperature. To ensure that the film
of lubricant in the bearings and sealing system is not lost, the motor shaft should be turned through several
revolutions by hand after a lengthy period of storage, for example at monthly intervals. The roller bearings
in the motors should be replaced (or regreased) if the period between delivery and commissioning is over
four years. If the machines are stored in adverse conditions, this period may differ considerably.

7
4.0 Main dimensions and technical data
4.1 Dimensions
4.2 Technical data
Rated Voltage 115 V
Current consumption 30 A
Power requirement 3300 W
Frequency 50 – 60 Hz
Idling speed 315 / 720 / 1090 min
-1
Full speed 155 / 375 / 650 min
-1
Output rating 2400 W
Torque 142 / 68 / 38 Nm
Drilling diameter 50 - 470 mm
Weight 13,2 kg
Core bit connection UNC 1 ¼ “
Overload coupling torque 260 Nm

8
4.3 Noise emissions and vibrations [EN 50144]
Noise level Noise level Vibration
dB(A) dB m/s
2
83 96 < 2,5
5.0 Commisioning
Check that the mains voltage is identical to the voltage specified on the model plate.
Secure the core drill and the water collector to the drilling stand with its reverse block. The drilling stand
should be as rigid as possible and have precise, low-play guides. Ensure that the core drill axis is parallel
to the axis of the drilling stand.
Insert the core bit and set the speed. The setting instructions are on page 12.
Connect the water supply. Important: Do not exceed the maximum water pressure of 3 bar.
Connect the core drill to the mains using a residual current-operated circuit-breaker box and 6 h coded
CEE plug. Only use three-core extension cables with a protective conductor and an adequate cross-
section. If the cross-section is too low, you may lose excessive power and result in the motor and cable
overheating. An extension cable must have an overload cut-out switch. Recommended cable cross-
sections:
Rated current = 30 A
Cable length m 7,5 15 25 30 45 60
Cable cross-section mm
2
2,5 2,5 2,5 2,5 2,5 4
Ensure that you have sufficient cooling water for drilling. Use only pure tap water, no dirt or sewage, other-
wise the drilling motor will damaged. Adjust the feed speed to the core bit diameter and the drive rating of
the core drill so that the rated current is not exceeded.

9
5.1 Changing gear
Warning
Never change gear using force and only do so when the machine is slowing
down or at a standstill.
To change into the next higher or lower gear, move the gear-change lever through an angle of approx. 50°.
If necessary (if the gear is difficult to engage), turn the drive spindle briefly by hand until the gear engages
easily. Do not use any tools (pliers, hammer, etc.) to change gear since otherwise gear damage is a natural
con-sequence.
5.2 Safety coupling
The values set out in the table are theoretical values and may be used to provide a rough guide for gear
changing. Since a whole range of other parameters also plays a major role in adjusting the speed, we can-
not offer any guarantee if the tool is damaged when using the values in the table. Drilling work for which the
speeds are outside the range of the core drill (values printed in italics), should only be completed with ex-
treme care and by trained personnel.
5.3 Core bits
All core bits with a connection thread of UNC 1 ¼ “ can be used.
Adapters can be supplied to allow core bits with other connection systems to be used.
Only use core bits that are suitable for the type of stone.
You will keep the core drill in good condition if you only use core bits that are concentric and not deformed
ones.
Ensure that the diamond segments have an adequate undercut against the core bit body.
Warning
To use wrong tools or accessories is danger for your life.
5.4 To change a core bit
The drill spindle has a right-handed thread.
Always use a 32 mm open-ended spanner to hold against the drill spindle.
Never release the core bit with (hammer) blows since this will damage the core drill.
The core bit can be removed more easily if you apply a little waterproof grease to the drill spindle thread.

10
6.0 Safety instructions
Important
Only use the core drill under supervision. Disconnect the mains plug and check
that the switch has been turned off,
- If you intend to leave the core drill unsupervised,
- For attachment and disconnection work,
- If the voltage drops (below 340 V),
- At uneven mains voltage (phase asymetrical) or interruption of a phase (phase failure),
- For adjustments or for fitting an accessory,
Switch off the machine if it stops for any reason. This will prevent its starting suddenly when it is not under
supervision.
Do not use the tool if
- Part of the casing is missing or defective,
- If water drips out of the overflow hole, stop work and have the core drill inspected by an author-
ised service contractor.
- After a fault do not switch on the machine again until the core bit can be turned easily.
- Check the area you wish to drill with a line detector to prevent drilling through electric cables, wa-
ter or gas lines, etc.
- The switch, lead or plug connector has suffered damage (conduct a visual inspection every day).
- Cooling water must not be allowed to ingress into the motor or the electrical components when
operating the core drill in any position.
Do not expose the tool to rain and use not in humidity or wet environment. Use a good lightning. Do not use
the tool near flammable fluids or gase air mixes.

11
7.0 Servicing and care
Warning
Before starting any servicing or repair work always disconnect the mains plug.
After all repairs you must have the core drilling machine inspected by an elec-
trician (statutory regulation pursuant to VBG4 since 1.1.1990).
7.1 Daily care
Ensure that no water is emitted from the overflow hole. This will cause gear damage and may adversely
affect the electrical safety of the core drill. If water is emitted, see assistance from an authorised service
outlet.
Visual inspection for damage to the switch, connection lead or plug connector.
After completing the drilling work clean the core drill. Grease the core bit mounting thread. The ventilation
slits must always be clean and open. Ensure that during the cleaning process, no water gets into the core
drill.
Empty the cooling water in the drilling motor after the use. Open to this the ball cock completely and let the
cooling water go off. This is particulary very important because of freezing education in the winter months.
To maintain the seal, oil the drilling spindle as follows
- Disconnect the core drill from the water supply. Open the water connector shut-off cock, add sev-
eral drops of oil, close the shut-off cock, add several drops of oil to the overflow hole and turn the
machine briefly by hand.
7.2 After approx. 150 hours of use
After the first 150 hours of use, the gearbox oil must be changed.
7.3 After approx. 250 hours of use
Have the carbon brushes checked, and replaced if necessary, by an electrician.
- Remove the screws (35). Pull the cap (32) off the motor casing (2). Remove the carbon
brushes screws (13), raise the carbon brushes retaining springs and take out the carbon
brushes (9). Clean the carbon brush holder and collector with a paintbrush.
- Fit new carbon brushes following the above instructions in reverse. Position the cap (32) and
secure it with the screws (35). Fit the cap (32) on the motor casing (2) by tapping it gently with
a rubber mallet or the like. Tighten the screws (35). Release the stress by tapping the cap (32)
twice.
Avoid adjusting the carbon retaining springs.
Only use original spare parts.
7.4 Quarterly
Have the cable, switch and plug connectors inspected by a specialist (regulation pursuant to VBG4) and
document this inspection. Changing the gearbox oil will produce a considerably increase in the service life
of the gear.

12
8.0 Speed adjustment dependent on the cutting speed
The values set out in the table are theoretical values and may be used to provide a rough guide for gear
changing. Since a whole range of other parameters also plays a major role in adjusting the speed, we can-
not offer any guarantee if the tool is damaged when using the values in the table. Drilling work for which the
speeds are outside the range of the core drill (values printed in italics), should only be completed with ex-
treme care and by trained personnel.
3
4
5
6
7
[m/s]
50
1146
1528 1910 2292 2674
3rd gear
60
955
1273
1592 1910 2228
3rd gear
65
881
1175
1469 1763 2057
3rd gear
70
819
1091
1364 1637 1910
3rd gear
75
764
1019
1273
1528 1783
3rd gear
80
716
955
1194
1432 1671
3rd gear
85
674
899
1123
1348 1573
3rd gear
90
650
849
1061
1273
1485
3rd gear
95
603
804
1005
1206
1407
3rd gear
100
573
764
955
1146
1337
3rd gear
110
521
694
868
1042
1215
3rd gear
120
477
650
796
955
1114
3rd gear
130
441
588
735
881
1028
3rd gear
140
409
546
682
819
955
3rd gear
150
375
509
650
764
891
3rd gear
160
358
477
597
716
836
3rd gear
170
337
449
562
674
786
3rd gear
180
318
424
531
650
743
3rd gear
190
302
402
503
603
704
3rd gear
200
286
375
477
573
650
3rd gear
220
260
347
434
521
608
2 or 3
240
239
318
398
477
557
2 or 3
260
220
294
375
441
514
2 or 3
280
205
273
341
409
477
2 or 3
300
191
255
318
375
446
2 or 3
320
160
239
298
358
418
2 or 3
340
169
225
281
337
393
2 or 3
360
159
212
265
318
375
2nd gear
380
120
201
251
302
352
1 or 2
400
143
191
239
286
334
1 or 2
420 136
182
227
273
318
1 or 2
440 130
174
217
260
304
1 or 2
460 125
166
208
249
291
1 or 2
480 119
159
199
239
279
1st gear
500
115
120
191
229
267
1st gear
520
110 147
184
220
257
1st gear
540
106 141
177
212
248
1st gear
560
102 136
171
205
239
1st gear
580
99 132
165
198
231
1st gear
600
95 127
159
191
223
1st gear
620
92 123
154
185
216
1st gear
640
90 119
149
179
209
1st gear
660
87 116
145
174
203
1st gear
680
84 112
140
169
197
1st gear
Bit capacifityø
concrete
concrete
rock
[mm]
reinforced

13
9.0 Warranty
In keeping with our terms of sale, we offer a warranty for twelve months from the date of sale. This refers to
the free repair of material and workmanship defects, which were verifiably caused before the sale.
An original purchase document must always be submitted in case of a warranty claim. It has to contain the
full address of the dealer, the date of purchase and the type designation of the product. The operating in-
structions of the particular product and the safety instructions must have been followed.
Damages resulting from operational faults cannot be acknowledged as warranty cases.
The products of the manufacturer have been developed and produced for specific applications. No war-
ranty claim is accepted in case of non-compliance with the due employment according to the operating in-
structions, in case of the employment for other purposes than originally intended or the employment of in-
adequate accessories.
The periodical maintenance and cleaning of the products according to the directions of the operating in-
structions is absolutely necessary. The intervention of third persons (opening the machine) renders any
warranty claim void.
Maintenance and cleaning operations cannot be claimed on the basis of warranty.
Make sure only original spare parts and original accessories are used. They are available at the authorized
specialized product dealer. If non-original parts are used, consequential damages and increased hazard
cannot be ruled out. The producer is not liable for such damages. Disassembled or partially disassembled
hand saws and those repaired with non-original parts are excluded from the warranty.
Certain components, such as carbon brushes, ball bearings, switches, power-supply lines, gaskets, etc.,
are exposed to usage dependent or to normal wear. These wearing parts are not object of this warranty.
Wearing parts are marked on the spare parts lists.
10.0 General safety instructions
The general safety instructions can be found in the supplied safety instruction booklet.

14
11.0 Spare parts list
11.1 Stone drilling machine complete

15
Item Art. No. Description No.
1 200870 Stone drilling machine complete 1
2 301277 Motor complete 1
3 200895 Gear complete 1
4 300074 Water connection complete 1 **
5 800733 Hose complete 1
6 800028 Sealing ring 3
7 800023 Ball cook complete 1
8 800020 Slot-in nipple 1
9 800040 O-ring 1
10 800077 Locking ring 3
11 900318 Hexagon socket head cap screw 3
Wearing parts**

16
11.2 Motor complete

17
Item Art. No. Description No.
1 301277 Motor complete 1
2 200839 Motor casing 1
3 401554 Field coil 1
4 900011 Set screw 1
5 900229 Washer 1
6 800076 Locking washer 5
7 900412 Slotted pan head screw 1
8 300068 Brush bridge 1
9 800064 Carbon brush 2 **
10 900180 Locking washer 2
11 900332 Hexagon socket head cap screw 2
12 900183 Wave spring washer 4
13 900399 Slotted cheese head screws 2
14 400036 Air-flow-plate 1
15 302099 Switch box cover 1
16 802733 Pull-out protection 1
17 801263 Switch controller 1
18 900458 Hexagon socket countersunk head screw 2
19 800174 Protecting cap 1 **
20 401334 Cover plate 1
21 401667 Attempt current limiters complete 1
22 801354 Capacitor 1
23 900704 Hexagon socket head cap screw 4
24 401585 Armature 1
25 900483 Grooved ball bearings 1 **
26 900329 Grooved ball bearings 1 **
27 901094 Locking ring 1
28 900708 Shaft seal 1 **
29 800122 Cup spring 1
30 300029 Stored cap 1
31 800089 O ring 1 **
32 800077 Locking washer 3
33 900312 Hexagon socket head cap screw 3
34 200379 Intermediate cover 1
35 900168 Needle sleeve 2 **
36 900156 Needle sleeve 1 **
37 800083 O ring 1 **
38 800354 O ring 3 **
Wearing parts**

18
11.3 Gear complete

19
Item Art. No. Description No.
1 301764 Gear complete 1
2 100080 Gear casing 1
3 900051 Grooved ball bearings 1 **
4 900495 Grooved ball bearings 1 **
5 900670 Interim washer 1
6 400795 Sleeve 1
7 900669 Axial needle rim 2 **
8 900672 Rotor disc 2 **
9 900671 Needle bearing 1 **
10 300670 Support disc 1
11 400011 Brake disc 2 **
12 401308 Floor wheel complete 1
13 301051 Floor wheel 1
14 400798 Bearing sleeve 1 **
15 400048 Gear change shaft complete 1
16 800097 O ring 1 **
17 400096 Gear change lever complete 1
18 800075 Locking disc 1
19 900354 Hexagon socket head cap screw with centre hole 1
20 900500 Sealing ring 1 **
21 900498 Sealing screw 1
22 301934 Drill spindle 1
23 401964 Wave protection sleeve 1
23 400002 Wave protection sleeve optional 3
24 900110 Parallel key 1
25 400796 Pressure sleeve 1
26 300427 Pump wheel 1
27 301052 Pinion shaft 1
28 401310 Loose wheel 1 complete 1
29 301053 Loose wheel 1 1
30 400082 Bearing sleeve 1 **
31 400129 Adjusting washer 1
32 800080 Spring ring 1 **
33 900504 Adjusting ring 1
34 900014 Ball 2
35 800165 Bridge spring 1
36 301054 Gear change wheel 1
37 900663 Disc spring 9
38 401965 Compensation slice 1
39 401966 Hexagonal nut 1
40 401311 Loose wheel 2 complete 1
41 301055 Loose wheel 2 1
42 400083 Bearing sleeve 1 **
43 900163 Adjusting washer 1
44 900209 Locking ring 1 **
45 300872 Reduction gear shaft 1
46 900127 Adjusting spring 1
47 401338 Reduction gear wheel 1
48 900674 Bush 1
49 801059 O ring 1 **
50 400797 Connection ring 1
51 800760 Locking ring 1 **
52 900673 Shaft seal 1 **
53 900027 Shaft seal 2 **
54 900675 Hexagon socket head cap screw with centre hole 3
55 900503 Adjusting washer 1
56 800092 O-Ring 1 **
57 800413 Gear lubricant oil 0,3l 1 **
Wearing parts**

20
11.4 Connection cables and accessories