Kernlochbohrer KBS-352/M-PRO User manual

Operating instructions
Core drill rig
KBS-352/M-PRO KBS-502/M-PRO
KBS-352/XL-PRO
Kernlochbohrer GmbH
Geigersbühlweg 52
72663 Großbettlingen
Tel. [phone]
E-Mail: [e-mail] Version 0 2. Output 05/2023

Content
Introduction and description 3
About this guide 3
Explanation of symbols 3
Safety regulations 4
Product description 6
Technical data 6
Mounting the drill stand 7
Care and maintenance 10
Maintenance and inspection plan 12
Troubleshooting 13
Exploded view 14
Environmental protection 16
Warranty 16
EC Declaration of Conformity Attachment
2

Introduction and description
The KBS-352/M-PRO, KBS-502/M-PRO and KBS-352/XL-PRO core drilling
stands are designed for mounting diamond core drilling equipment. They are
intended for professional use and may only be used by trained personnel.
Our company declines all responsibility in the event of violations of the operating
instructions that may lead to injuries or machine damage. In addition, all currently
applicable regulations of the Accident Prevention Regulations (UVV) and the
Employer's Liability Insurance Association (BG) must be observed.
Thanks to the buyer
Thank you for purchasing a core drill rig from Kernlochbohrer GmbH. Please read
the operating instructions carefully and observe the safety instructions. Through
proper operation, you will fully appreciate the outstanding performance of our
products. Keep this manual in a safe place for future reference. If you have any
questions regarding the operation of the core drill, please contact Core Drill GmbH
directly. We are available to answer your questions at any time.
Note:
Kernlochbohrer GmbH reserves the right to change the design and appearance of
the products and their operating instructions. Future changes to the operating
instructions will be made without prior notice.
Explanation of symbols
General Danger Warning. Failure to follow these safety precautions and
instructions may result in electric shock, fire and/or serious injury.
3

Safety regulations
❖Read all precautions before start-up and keep the operating instructions.
❖Please follow the operating instructions carefully, as failure to follow these
safety precautions and instructions may cause electric shock, fire and/or
serious injury.
1. Keep your work area clean and well lit. Disorder or unlit work areas can lead to
accidents.
2. Do not work with power tools, near flammable liquids, gases or dust. Power
tools produce sparks that can ignite dust or fumes, causing explosions.
3. Keep children and other persons away from tools during use. If you become
distracted, you may lose control of the tool.
4. Be attentive, work with concentration and pay attention to what you are doing.
Do not use a power tool when you are tired or under the influence of drugs,
alcohol or medication. A moment of inattention can result in serious injury.
5. Wear suitable protective equipment and always protective goggles. Wearing
suitable protective equipment such as dust mask, non-slip safety shoes,
gloves, hard hat or hearing protection reduces the risk of injury.
4

6. Avoid unusual postures. Ensure a secure footing and maintain your balance at
all times. Do not work on a ladder. This will give you better control of the power
tool in unexpected situations.
7. Wear appropriate clothing. Do not wear loose clothing or jewelry. Keep hair,
clothing and gloves away from moving parts. Loose clothing, jewelry or long
hair can be caught by moving parts.
8. The use of products such as cutters, grinders, drills that machine sand or
materials can generate dust and fumes that may contain hazardous chemicals.
Check the type of material you are going to machine and use a suitable
respirator.
9. Never work alone, always make sure that another person is nearby. Apart from
the fact that you can get help with the assembly of the drill, you can also get
help if an accident should happen.
10. Never use a drilling instrument that is faulty. Carry out the maintenance and
service instructions described in this manual. Some maintenance and service
measures must be performed by trained and qualified personnel.
11. Before mounting the drill motor and drill bit, make sure that the stand is
properly secured.
12. The drill stand must be fixed on a level and firm surface. Drilling with a loose
and/or wobbling stand can lead to a dangerous situation.
13. The core drill rig is intended for the intended purpose, the mounting of the drill
motor for stationary drilling. All other uses that are not for the intended purpose
are prohibited.
5

14. Always use compatible drilling tools with the drill stand. The connection to the
core drilling motors must be in accordance with the stand.
15. When used for overhead drilling, a functional water collection ring must be
used. Make sure that no water can get into the motor.
16. Check all moving and clamped parts before use.
17. Only use original spare parts from Kernlochbohrer GmbH.
Product description
1. Drill column 7. Slide lever lock
2. Hand crank 8. Dragonfly
3. Angle clamp 9. Mounting adapter
4. Column support 10. Drill slide
5. Column holder 11. Leveling screw
6. Base plate
6
1
2
3
4
5
6
11
10
9
7
8

Technical data
Model : KBS-352/M-PRO KBS-502/M-PRO KBS-352/XL-PRO
Item number: 6216 6215 6299
Max. Drill size: 402mm 502mm 352mm
Drill column: 80x75x1000mm 80x75x1000mm 80x75x2000mm
Drilling stroke: 650mm 650mm 1600mm
Motor mount: 60mm Mounting bracket 110mm Mounting bracket 60mm Mounting bracket
N.W. 18,5kg 19,5kg 25,0kg
Packing size: 1045x315x460mm 1045x315x460mm 2145x315x460mm
Mounting the drill stand
Determine the desired position of the stand. Then
fasten the stand with a concrete anchor. To do this, drill
a hole of suitable size for the anchor using a hammer
drill.
When anchoring to a brick wall, a special masonry anchor and brick fixing kit must
be used. The use of a concrete impact anchor in brick could lead to brick
breakage and loosening of the anchor!
If you use our vacuum base plate VGP-420/PRO to fix the core drill rig, make sure
that the vacuum is at least -0.8bar and make sure that the seal is not worn or
damaged.
7

Warning!
In the case of overhead drilling, vacuum attachment to the ceiling is prohibited as
it can cause serious injury.
To bring the drill stand into
the correct position, use the
four leveling screws and the
level indicator attached to
the drill carriage for this
purpose. Then tighten the
lock nuts on the leveling
screws. The entire stand
must be firmly mounted.
Adjust the angle of the drill stand to the position using
the drill center of the desired drill hole. The adjustable
drilling angle ranges from 0 ° to 45 °. If you need to drill
at 45 °, loosen the clamping screw with the attachable
13mm crank.
Loosen the clamping screw on the column support and set the angle according to
the scale on the drill column. Once the angle is set, tighten the clamping screw
again. Make sure that the mounting adapter and the carriage are fixed.
Note!
Do not overtighten the clamping screw, otherwise the column support and the
bracket may deform.
8

Check if the guide on the column is loose. If it is loose, you must adjust the 4
eccentric clamps inside the drill carriage. Use a 13mm wrench and an 8mm
wrench to tighten the clamping nut for adjustment. Now test the proper fit of the
drill slide by cranking it up and down. There should be no play, but also no
jamming throughout the travel.
The KBS-352/M-PRO/KBS-352/XL-PRO and KBS-502/
M-PRO each have a different mounting adapter. The
mounting adapter of the KBS-352/M-PRO and KBS-352/
XL-PRO is 60mm while the mounting adapter for the
KBS-502/M-PRO is 110mm to allow drilling with larger
diameter drills.
Before mounting the drill motor
on the stand, first set the drill
slide to a higher position to
make it easier to mount the
adapter plate.
When mounting a drill rig of the DKB-PRO series to the core drill rig KBS-352/M-
PRO, KBS-502/M-PRO, KBS-352/XL-PRO, you first need 4 screws to fix the
mounting adapter to the motor. There is a 10x10x100mm keyway on the
mounting adapter, which absorbs the torque of the motor via the key. Now adjust
the locking screw so that the fastening adapter can be inserted effortlessly. Now
place the fastening adapter with the dovetail in the guide. Tighten the locking
screw until the plate is secured in the guide. To be able to remove the drill motor
again, loosen the fastening screw completely.
9

The locking device of the drill
carriage is located on the top
side of the drill carriage. It is
intended to prevent the drill
sled from falling down and
causing possible injury or
damage to the drill or the
machine.
Slide the carriage lock to the left to unlock the carriage, then crank the drill
carriage up or down to the desired position and slide the lever lock to the right to
lock the drill carriage. After making the desired adjustments, such as inserting the
motor, unlock the locking device and tighten the thumbscrew on the lever lock to
begin operation.
Note!
Do not crank the carriage up and down when the lever lock is in the locked
position, as this will damage both the rack and the lever lock.
For easy removal of the drill, use the quick-change ring
which is placed on the drill shaft in front of the drill bit.
The cup wing nut of the cord threaded rod (in the
optional fastening set) is a large wing-shaped nut with
washer. It can be used together with an impact anchor
to fasten the drill stand to the substrate.
10

If you are drilling a wall hole with a stand, first securely fasten the stand to the
wall, and only then mount the drill motor on the stand.
For the models KBS-352/M-PRO, KBS-502/M-PRO,
KBS-352/XL-PRO there are two possibilities of the
feed ratio. For fast movement of the carriage (gear
ratio 1:1) and for slow movement of the carriage with
reduced gear ratio (gear ratio 1:2). If the drill diameter
is larger than 202mm or you are drilling through high
density reinforced concrete, use the 1:2 ratio.
Care and maintenance
Repairs may only be carried out by qualified personnel suitable on the basis of
their training and experience. The core drill rig is designed to require a minimum of
care and maintenance. However, the following point must always be observed:
• After completing the drilling work, clean the core drill rig from dirt and dust
and, if necessary, grease the rig for easier operation.
• After finishing work with the stand, grease the shafts and their threads. Make
sure that no water runs out of the carriage and there is no dust buildup on the
carriage.
• If possible, do not use water to clean the drill stand, as some metal parts can
accumulate flash rust and this can lead to malfunction. Make sure that the
drill stand is dry after use and cleaning.
11

• In the front area of the drill slide there are 4 rollers. In the rear area there are
4 eccentric clamps. In the course of time, wear may occur on the rollers. If
this is the case, tighten the 4 eccentric clamps slightly until the slide can be
moved again without play. If it is no longer possible to readjust the eccentric
clamps, all 4 track rollers must be replaced to prevent further damage to the
gear shafts and the gear rack.
• Always pay attention to the wear listed above. Replace the rollers and/or the
eccentric clamps if necessary. If the problem still exists, replace the drill
column.
• Check the stability of the drill stand before each use. If the base plate of the
drill stand is damaged, replace it before using the drill stand.
• Periodically perform a visual and functional check to ensure that all terminals
and moving parts are fully functional.
• Only use the drill stand up to the maximum permissible diameter. This can be
found on the type plate of the respective stand.
• Failure to comply with this specification may result in malfunction when
operating the drill stand, as well as injury to the operator.
12

Maintenance and inspection plan
Regular inspection according to the maintenance and inspection schedule is
urgently required. Shorten the intervals between maintenance if you use the
product very frequently.
Maintenance
parts
each time
before use
monthly or
after 25 hours
of work
every 3rd
month or
after 50
working
hours
annually or
after 200
working hours
Greasing the
needle bearing
of the gear
shaft
√
√
√
√
Lever-locking
device
√
√
√
√
Clamping and
wheels
－
√
√
√
Drill column
－
－
－
√
Gear shaft and
gears
－
－
－
√
all clamping
p a r t s a n d
threads
√
√
√
√
Angle clamp
√
√
√
√
Rack
√
√
√
√
Base plate
welds
－
√
√
√
13

Troubleshooting
Error
Cause
Troubleshooting
the sled wobbles
Tensioner worn
Retighten the 4
eccentric clamps.
the gear shaft is jammed
all 4 rollers worn out
Replace all 4 casters.
Concentricity of the drive
shaft on the rack
Wear on the gear shaft
or the gear rack
Replace the worn
part.
Carriage lever lock cannot
engage on the toothed
rack
The lever lock has
deformed or the weld
seam is coming loose.
Replace the lever
lock.
After replacing all the
eccentric clamps and
aligning the impellers, the
carriage movement is still
unreliable.
The drill column is worn.
Replace the drill
column.
The angle adjustment on
the drill stand cannot be
tightened at 45°.
When tightening the
locking screw for the
angle adjustment, the
nut was overtightened.
Replace the angle
adjustment clamp on
the back of the drill
column.
Drill column starts to
wobble slightly.
Crack at the weld of the
base plate to the
column holder.
Replace the base
plate of the drill
stand.
14

Exploded view
KBS-352/M-PRO / KBS-352/XL-PRO
15

N
o.
Designation
Qu
anti
ty
No
.
Designation
Qua
ntity
1
Column protection top
1
37
Spring washer Φ8
4
2
Hexagon socket screw M6x17 Φ8x6
4
38
Washer Φ15xΦ8.6x10
4
3
Connector rear handle
4
39
Eccentric shaft
4
4
Hexagon socket mushroom head screw
M6x12
9
40
Eccentric clamp
4
5
Rear handle
2
41
Constant part ring Φ10
4
6
Rack M1,5x900=L
1
42
Weighing plate
1
7
Hexagon socket mushroom head screw
M6x10
7
43
Sledge
1
8
Column L=1000mm
1
44
Needle bearing HK152020
6
9
Hexagon bolt M10x75
1
45
Cover plate
2
1
0
Spring Φ13xΦ1.4x50=L
1
46
Hexagon socket mushroom head
screw M5x15
8
1
1
Spacer
1
47
Locking bolt Cradle
2
1
2
Washer Φ16xΦ10.6x1.5
1
48
Iron wedge
2
1
3
Hexagon nut M10x30 S=13
1
49
Spirit level
2
1
4
Right Angle Locking Clamp
1
50
Positioning wheel
4
1
5
Positioning mandrel
1
51
Washer Φ17,8xΦ12,3x0,5
4
1
6
Left angle clamping
1
52
Grub screw with cone point M5x10
4
1
7
Back support 35x50x605
1
53
Front wheel shaft
2
1
8
Circlip Φ12
2
54
Grub screw with cone point M4x5
2
1
9
Back support positioning shaft
1
55
Gear M1,5xZ=23
2
2
0
6" wheel with bearing
2
56
Key 4x4x8
2
2
1
Circlip Φ20
4
57
Shaft for standard ratio cranks
M1.5x11T
1
2
2
Wheelset holder
1
58
Wave
1
2
3
Hexagon socket mushroom head screw
M8x16
2
59
Shaft for crank with reduced ratio
M1,5x11T
1
2
4
Spring washer Φ8
2
60
Top sled guard
1
2
5
Base plate
1
61
Hexagon socket mushroom head
screw M5x20
8
16

2
6
Column mounting
1
62
Hexagonal lock nut M6
1
2
7
Column block
2
63
Washer Φ12xΦ6,2x1,5
1
2
8
Hexagonal lock nut M10
1
64
Slide lever lock
1
2
9
Socket insert
4
65
Shoulder screw M6x25
1
3
0
Hexagon nut M20xP1.5 T=9 S=30
4
66
Key 10x8x100
1
3
1
Washer Φ24xΦ10,6x1,5
4
67
Motor mounting spacer T=50mm
1
3
2
Hexagon nut M12
4
68
Spacer mounting screw M8x35
4
3
3
Leveling screw M12x85
4
69
Hand crank
1
3
4
Hexagon socket mushroom head screw
M5x20
8
70
Feed rate crank body S=13
1
3
5
Bottom sled guard
1
71
Ball plunger M5x8
3
3
6
Tensioner nut M8
4
72
Knob M10x35
2
17

KBS-502/M-PRO
18

N
o.
Description
Qu
ant
ity
No
.
Description
Q
u
a
nti
ty
1
Column protection top
1
37
Spring washer Φ8
4
2
Hexagon socket screw M6x17 Φ8x6
4
38
Washer Φ15xΦ8.6x10
4
3
Connector rear handle
4
39
Eccentric shaft
4
4
Hexagon socket mushroom head screw
M6x12
9
40
Eccentric clamp
4
5
Rear handle
2
41
Constant part ring Φ10
4
6
Rack M1,5x900=L
1
42
Weighing plate
1
7
Hexagon socket mushroom head screw
M6x10
7
43
Sledge
1
8
Column L=1000mm
1
44
Needle bearing HK152020
6
9
Hexagon bolt M10x75
1
45
Cover plate
2
1
0
Spring Φ13xΦ1.4x50=L
1
46
Hexagon socket mushroom head
screw M5x15
8
1
1
Spacer
1
47
Locking bolt Cradle
2
1
2
Washer Φ16xΦ10.6x1.5
1
48
Iron wedge
2
1
3
Hexagon nut M10x30 S=13
1
49
Spirit level
2
1
4
Right Angle Locking Clamp
1
50
Positioning wheel
4
1
5
Positioning mandrel
1
51
Washer Φ17,8xΦ12,3x0,5
4
1
6
Left angle clamping
1
52
Grub screw with cone point M5x10
4
1
7
Back support 35x50x605
1
53
Front wheel shaft
2
1
8
Circlip Φ12
2
54
Grub screw with cone point M4x5
2
1
9
Back support positioning shaft
1
55
Gear M1,5xZ=23
2
2
0
6" wheel with bearing
2
56
Key 4x4x8
2
2
1
Circlip Φ20
4
57
Shaft for standard ratio cranks
M1.5x11T
1
2
2
Wheelset holder
1
58
Wave
1
2
3
Hexagon socket mushroom head screw
M8x16
2
59
Shaft for crank with reduced ratio
M1,5x11T
1
19

2
4
Spring washer Φ8
2
60
Top sled guard
1
2
5
Base plate
1
61
Hexagon socket mushroom head
screw M5x20
8
2
6
Column mounting
1
62
Hexagonal lock nut M6
1
2
7
Column block
2
63
Washer Φ12xΦ6,2x1,5
1
2
8
Hexagonal lock nut M10
1
64
Slide lever lock
1
2
9
Socket insert
4
65
Shoulder screw M6x25
1
3
0
Hexagon nut M20xP1.5 T=9 S=30
4
66
Key 10x8x100
1
3
1
Washer Φ24xΦ10,6x1,5
4
67
Motor mounting spacer T=110mm
1
3
2
Hexagon nut M12
4
68
Spacer mounting screw M8x35
4
3
3
Leveling screw M12x85
4
69
Hand crank
1
3
4
Hexagon socket mushroom head screw
M5x20
8
70
Feed rate crank body S=13
1
3
5
Bottom sled guard
1
71
Ball plunger M5x8
3
3
6
Tensioner nut M8
4
72
Knob M10x35
2
20