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MANUAL BEVELLING AND
DEBURRING SYSTEM
B15 AIR
ord. No. 27 220
Operating Instructions for the device
Subject to change
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Table of Contents
General Information 3
Description of the machine B15 AIR 4
Identification Data 4
Tests 4
Warranties 5
Safety Considerations 5
Technical Specifications 7
Accessories 7
Unpacking of the Device 7
B15 AIR Control Elements 8
Use 9
Setting of the draft 9
Bevelling 11
Change to the Bevel Angle and Shape Replacing of the Cutter Head 12
Replacement of Cutting Tips 13
Maintenance and Operation 14
Spare Parts 14
List of Spare Parts 14
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Before use, always read the operating instructions thoroughly
1. General Information
Thank you for purchasing one of our machines and we hope that you will be fully satisfied
with it.
This manual contains all instructions for installation, adjustment, operation and maintenance
of the machine B15 AIR in compliance with the applicable safety standards.
Information contained in this manual may be subject to changes due to further
improvement of machines. If on doubt upon finding any differences, please contact
N.KO Machines.
Never carry out any operations with the machine until you read the instructions contained in
this manual and understand them. The majority of accidents which happen in the workplace
are caused due to failure to comply with instructions and recommendations contained in the
manual.
Graphic symbols used in the manual are used for highlighting of important information
concerning safety and operation of the machine.
Caution:
Important information for personal safety of operators.
Important:
An instruction which must be followed to ensure the correct operation of the machine.
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2. Description of the machine B15 AIR
The machine B15 AIR is intended only for the following applications:
B15 AIR is intended only for bevelling and deburring of metal materials in a workshop or a
production hall.
It is a manual, hand-operated machine. The main advantage of the machine is its ability to
machine both flat and shaped workpieces, openings as well as pipes. The machining angle can
be changed upon replacing of the cutter head. B15 AIR can also round edges of workpieces.
For this application, a special tool (see below) is also neccessary.
Use the machine only in the environments protected from rain, snow and other adverse
climatic effects.
3. Identification Data
The identification data of the B15 AIR machine are stated in the rating plate attached to the
drive body.
4. Tests
The chamfering machine is tested in our testing laboratory.
During this test, the correct function of bevelling of sheets and profiles of various types and
sizes is tested.
5. Warranties
The seller grants the warranty for the bevelling system B15 that it will not have any material
or manufacturing defects for the period of 12 months from the date of delivery.
The warranty for flawless function of the goods and the materials used is granted for the
period of 12 months from the date of delivery of the goods.
The seller undertakes to remove any possible defects covered by the warranty free of charge
and without undue delay, so that the buyer of the goods can use the product properly. Should
the buyer exercise rights arising form the liability for the defects which are not covered by the
warranty, he/she shall pay all related costs to the seller.
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The manufacturer's warranty shall be deemed void in the event of:
improper use of the machine,
use contrary to national or international standards,
incorrect installation,
faulty supply of compressed air or its poor quality
serious deficiencies in maintenance,
unauthorized modifications and/or interventions,
use of other than genuine spare parts and accessories or spare parts and accessories
approved by the manufacturer for the respective model,
total or partial non-compliance with the instructions included in the manual,
exceptional events, natural disasters and others.
6. Safety Considerations
Caution:
In order to prevent injuries, observe the following:
Prior to bevelling, check whether the machine is not mechanically or otherwise damaged. Put
the machine into service only if the supply pressure hose is not damaged.
Check the pressure hose and air connections regularly. If damaged, have them replaced
in the service authorized to carry out such repairs. Contact your vendor.
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Personal Injury Protection
at work, use safety goggles, solid footwear, ear protectors, suitable head wear, e.g. a hard
cap.
Connect the machine to the compressed air distribution only if the starting valve of the
machine is in the OFF position.
Prior to each use, check whether the device or the compressed air supply are not
damaged. Do not use the machine if there are any damages.
Protect the device from moisture and do not use it in the wet environment.
Ensure good lighting of the workplace, so that the risk of possible injury or sight
impairment are prevented.
Caution. The tool (cutter) is sharp. There is a risk of injury. While replacing, use
protective gloves, never touch the cutter when in motion.
The material subject to machining must always be fixed firmly and horizontally. The
optimum workpiece height is 900 mm above the ground.
While working, pay attention to the supply hose; it should always be freely lying on the
ground away from the material subject to machining and any other sharp objects.
After work, disconnect the device from the compressed air supply.
Do not overload the machine engine. The machine works better if it is not overloaded.
While working, hold the machine with both your hands.
Pay attention to the risk of injury by hot metal chips.
Important:
In the event of damage, have your machine repaired by the service authorized to carry out
such repairs. For more information, contact your supplier.
7. Technical Specifications
Bevel angle
removable head 30°, 37,5°, 45°, 50°, 60°
other angles upon request
Bevel width
0 to 15 mm < 400N/mm2 - 0 to 8 mm > 400N/mm2
Radius
max R3.5mm
Engine
pneumatic
Engine power
2984 W
Speed
6000 rpm
Air consumption
750 L/min
Working pressure
6bar
Weight
7.5 kg
Number of Cutting Tips
6 pcs (cutter head for edge rounding - 3 pcs)
Fitting of the compressed air inlet
G ½“
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7.1. Bevelling of holes – minimal dimensions
8. Accessories
Cutter head 30° (including cutting tips, screws, bolt and roller)
27 223
Cutter head 37.5° (including cutting tips, screws, bolt and roller)
27 227
Cutter head 45° (including cutting tips, screws, bolt and roller)
27 222
Cutter head 50° (including cutting tips, screws, bolt and roller)
27 224
Cutter head 60° (including cutting tips, screws, bolt and roller)
27 240
Coated cutting tips, four-blade for 30°/37.5°/ 45°/50°/ 60 (10 pcs in packing)
27 231
Screws for mounting the cutting tips
27 241
Cutter head for rounding R 2,5 mm (including cutting tips, screws, bolt and roller)
27 234
Cutter head for rounding R 3,5 mm and 4 mm
(including cutting tips, screws, bolt and roller)
27 233
Coated cutting tips, four-blade for rounding R 2,5 mm (10 pcs in packing)
26 109
Coated cutting tips, four-blade for rounding R 3,5 mm (10 pcs in packing)
26 110
Coated cutting tips, four-blade for rounding R 4 mm (10 pcs in packing)
26 111
Pneumatic hose, complete, including quick couplings
27 229
Filtration and pre-lubrication unit, including regulation
27 228
9. Unpacking of the Device
Unpack the machine from the boxboard and check whether everything is all right and whether
the machine is free of any defects. Should you have any questions, contact your distributor.
The machine B15 AIR is supplied together with the necessary tools for operation,
but without the tool and quick coupling for air supply.
The tools, pressure hose and required couplings, filter and regulating unit can be purchased if
needed.
Please refer to the catalogue of N.KO Machines and contact your distributor.
Bevel angle α°
Minimal diameter of the hole in mm
30°
Ø 34mm
37,5°
Ø 28mm
45°
Ø 28mm
50°
Ø 28mm
60°
Ø 27mm
R 2,5mm
Ø 41mm
R 3,5/4mm
Ø 40mm
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10. B15 AIR Control Elements
Fig. 10.0.1
A. Starting valve
B. Starting valve fuse
C. Engine body
D. Right and left handle
E. Pressure disc with a sleeve
F. Guide, stop roller of the cutter
G. Scale for reading of bevel angle settings
H. Locking screw of the pressure disc sleeve - Locking of the set draft
I. Cutter body with cutting tips
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11. Use
Important:
The device can be used only if it is fitted with cutting tips supplied by your distributor or the
manufacturer of the equipment. They are four-side cutting tips. The device is fitted with 6
cutting tips. It is strongly advisable that you use only genuine cutting tips.
11.1 Setting of the draft
Caution:
While adjusting the machine, use working gloves and other personal protective
equipment. Operations must be performed with the still machine and after the
machine has been disconnected from the compressed air distribution.
Disconnect the compressed air distribution.
Loosen the locking setting screws (fig. 10.0.1, position H)
Turn the guide disc (fig. 10.0.1, position E) to set the draft size. The current settings
can be read from the scale (fig. 10.0.1, position G). The scale is for reference only and
the resulting draft can be other for various angles of cutter heads.
For settings, tighten both the screws (fig. 10.0.1, position H)
Important:
The maximum draft is 15 mm of the bevel width (dimension P, fig. 11.1.1). This draft must be
achieved within multiple steps. It depends on the strength of material. Testing is
recommended.
Start with a smaller draft and increase the value gradually, until the work with machine is
comfortable and the cutting tips are able to carry out continuous draft without any increased
vibrations. For informative settings, use the below-mentioned tables.
We recommend to keep the work log, where you can write down the measured values and
your own machining procedures.
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fig. 11.1.1
For indicative settings of the draft size and the actual machining process, you can use the
tables for settings of various bevel angles.
Important:
The values in the table are calculated from the so-called 0 point. The 0 point is the
point, when the cutter touches the material edge for the first time. The point can
be set by gradual turning of the pressure disc (fig. 10.0.1, position E) and attaching
to the material edge.
45° - For full bevel (P = 15 mm), the pressure disc must be turned by 5.2 revolutions.
Chip no.
Hypotenuse
P
Bevel height A
Number of
pressure disc
revolutions
I.
5mm
3.5mm
2 revolves
II.
11mm
7.8mm
2 revolves
III.
15mm
10.6mm
1,2 revolves
See fig. 11.1.1.
30° - For full bevel (P = 15 mm), the pressure disc must be turned by 6.2 revolutions.
Chip no.
Hypotenuse
P
Bevel height A
Number of
pressure disc
revolutions
I.
5mm
4.3mm
2 revolves
II.
10mm
8.6mm
2 revolves
III.
15mm
13mm
2.2 revolves
See fig. 11.1.1.
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Important:
The machine was designed for preparation of weld surfaces. The accuracy of
machining is in the range of +/- 1 mm. Satisfactory results can be achieved only
under the condition that the edges of the material have been prepared perfectly.
Unfortunately, material is often burnt or sheared. These inaccuracies, of course,
have impact on the results of machining.
Important:
If it is difficult to machine the bevel in the number of steps recommended by us,
we recommend that you divide the process into multiple chips. The reason may
consist in wear and tear of the cutting tips or worse machinability of the material.
11.2 Bevelling
Connect the device to the compressed air distribution system and set the pressure
regulator to the max. value 6 bar.
Lubrication shall be set to the medium position.
After careful settings of the first draft (refer to section 11.1), hold the device with both
your hands, unlock the fuse of the starting valve and start the machine.
Put the machine on the material, so that the pressure/contact disc (fig. 10.0.1, position
F) touches the material with maximum of their surfaces.
Slowly get the machine closer to the material until you feel that the cutter is starting to
be engaged. CAUTION!!! Now, a kickback may occur. Therefore, be careful.
Move the machine further towards the material until the cutter is inserted in the
material in the entire profile of the set chip. Now the contact roller must touch the
workpiece edge. The pressure disc must lie flat with its surface on the material.
Now, you can start machining from left to right. The machine shall be moved constantly
only at the speed, so that the cutter is able to remove material in the set chip profile
continuously. Otherwise the cutter will be pushed out from the material and the bevel
will be uneven.
Caution:
While working, use working gloves and other personal protective equipment.
Maintenance operations must be performed with the still machine and after the
machine has been disconnected from the compressed air distribution.
Important:
The machining movement is always from the left to the right.
Caution:
Operators must hold the device with both their hands.
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11.3 Change to the Bevel Angle and Shape Replacing of the Cutter Head
The machine B15 AIR is designed for the use of multiple kinds of cutter heads, see chapter
8. Accessories
When replacing the head, proceed as follows:
Disconnect the compressed air distribution.
Loosen the locking setting screws (fig. 10.0.1, position H)
Turn the guide disc (fig. 10.0.1, position E) until you dismantle it fully from the
machine.
Lock the spindle against turning using the enclosed mandrel (fig. 11.2.1, position E)
Using the supplied Allen key (fig. 11.2.1, position C) loosen and dismantle the roller
screw (fig. 11.2.1, position B) and the roller (fig. 11.2.1, position A)
Now dismantle the actual cutter head (fig. 11.2.1, position F) using the supplied hook
spanner (fig. 11.2.1, position D).
Following the same procedure, install the new head and re-assemble the machine.
All joints must be tightened properly.
Fig. 11.2.1
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Caution:
While adjusting the machine, use working gloves and other personal protective
equipment. Operations must be performed with the still machine and after the
machine has been disconnected from the compressed air distribution.
11.4 Replacement of Cutting Tips
Important:
Work only with sharp and undamaged cutting tips. Thus you can avoid damages to
the machine. If the cutting tips are worn or broken, replace them.
Using the supplied spanner (fig. 11.3.1, position D), loosen the screws fixing the cutting
tips (fig. 11.3.1, position C).
The cutting tips (fig. 11.3.1, position B) shall be replaced by the new ones, other ones
or turn them, so that you use all cutting edges. Caution! Due to their specific shape, be
careful while performing this task.
Re-tighten the cutting edges properly (fig. 11.3.1, position C).
Install the assembly of the guide disc according to chapter 11.2.
Fig. 11.3.1
12. Maintenance and Operation
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The machine B15 AIR is equipped with a pneumatic drive. For flawless operation, provide for
compressed air with sufficient quality.
In order to achieve such quality, there are filtration and lubrication units.
The correct selection of the unit shall be consulted with your supplier or directly with the
manufacturer of the B15 AIR device, i.e. N.KO machines.
For lubrication, choose the oil suitable for lubrication of pneumatic drives. The
lubrication cycle should be set for 1 – 2 drops per minute.
Important:
Moving parts, threads and air connections must be continuously cleaned,
preferably with compressed air, and conserved (lubricated).
Caution:
While using compressed air for the purpose of cleaning, wear safety goggles and
never use pressure exceeding the value of 2 bars.
13. Spare Parts
Orders of spare parts must include the following data:
machine type,
serial number,
description of the required component and its number,
quantity.
13.1 List of Spare Parts
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16
17
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A copy of this manual is supplied with each machine B15 AIR.
All rights reserved.
No part of this publication may be reproduced without prior consent granted by N.KO.
Manufacturer's and Distributor's Address:
N.KO spol. s r.o.
a Member of Richtr Group
Táborská 398/22
293 01 Mladá Boleslav
Czech Republic – Europe Union
Phone: +420 326 772 001 fax: +420 326 774 279
email:nko@nko.cz
USA Distributor's Address:
BEVELER USA INC.
a Member of Richtr Group
Business Office, Workshop, Warehouse
328 14th Street
Ambridge, PA 15003
Toll Free Number: 1-800-973-1138
Phone Ambridge (PA) office: 1-412-452-2563
email:service@bevelerusa.com
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