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CBN & Diamond Grinding Wheels 2 3 Contents

4 6 24

About the CBN and Diamond For company Grinding Wheels users

NAXOS-DISKUS Diamond and Application form Schleifmittelwerke GmbH Cubic Boron Nitride

Technical information The DVS TECHNOLOGY GROUP Application-specific development at NAXOS-DISKUS

Grinding wheel construction

The key component: AUMENTO bonding

Technical specification 4 5 About the company

NAXOS-DISKUS NAXOS-DISKUS Schleifmittelwerke the extensive experience of the The The DVS TECHNOLOGY GROUP is With a unique combination of GmbH was founded as NAXOS- DVS mechanical engineering and made up of Germany-based compa- machining technologies, tooling Schleifmittelwerke UNION in Frankfurt in 1871, and production companies, a fact which DVS TECHNOLOGY nies focusing on the turning, gear innovation and production experi- cutting, grinding and gear honing ence for the machining of vehicle manufactures precision grinding GmbH is clearly refl ected in the quality GROUP technologies. Besides engineering powertrain components DVS is one tools for greatly differing applica- and design of the grinding wheels. and manufacturing machine tools as of the leading system suppliers in tions. The product range covers Special products such as mill well as grinding and honing tools, the industry. abrasive wheels for double face wheels, leather polishing rollers, DVS operates two production sites where automotive parts are The DVS TECHNOLOGY GROUP grinding, outer diameter grinding, nurit rollers and bulk abrasives machined in series production has more than 1,000 employees centerless grinding as well as gear supplement the extensive range of exclusively on DVS machines. This worldwide. On key markets like grinding and gear honing, from products. NAXOS-DISKUS is one adds a high degree of production China and the United States DVS the conventional abrasive grit to of the world’s leading grinding know-how to the experience of the supports its clients with their own extremely hard cutting materials tool manufacturers and produces DVS machine tool and tooling staff in service and sales. manufacturers. such as CBN and diamond. vitrifi ed and resin-bonded grinding As a member of the DVS TECHNOLOGY wheels with an outer diameter GROUP, NAXOS-DISKUS can draw on of up to 1,600 mm.

1871 1905 1978 Company founded Production of the fi rst Production of the fi rst vitrifi ed-bonded grinding wheel CBN grinding wheels for crankshaft grinding with vitrifi ed bonding

Members of the DVS TECHNOLOGY GROUP 1987 NAXOS Schleifmittelwerke 1910 plant is built in Butzbach Production of the fi rst resin-bonded grinding wheels 2005 Integration in the DVS TECHNOLOGY GROUP

1900 1950 2009 Start of production Focus on diamond Takeover of the “Bonded” of grinding wheels made in research and sector of The Carbo Group GmbH of synthetic corundum development work 6 7 CBN and Diamond Grinding Wheels

Diamond and Today’s demands in terms of speed known material after diamond, and precision in the manufacturing is suitable for the grinding of Cubic Boron process are a challenge for the these alloys. machining of highly wear-resistant Nitride (CBN) and low-abrasion materials. Diamond and CBN are superior NAXOS-DISKUS has a wide range to all other materials as far as cut - of tools with diamond and CBN ting edge consistency and wear- to grind amorphous materials or resist ance are concerned. Our CBN alloys containing carbide efficiently. and diamond grinding wheels are produced for performing highest As the hardest material discovered precision grinding operations with thus far, diamond is an ideal grind - exceptionally good reproducibility. ing agent for very hard materials. Specially coated CBN abrasive and However, its transformation back the newly developed vitrified and to carbon makes it unsuitable for resin bonding systems are the basis the grinding of ferrous materials. for the CBN and diamond grinding CBN, which is the second hardest wheels from NAXOS-DISKUS.

Application-specific Machine planners are familiar Expert application technicians help with the problem: the use of you to choose the right grinding development standardised grinding wheels is agent for your application, so at NAXOS-DISKUS not always possible when modi- that the advantages of diamond fied, product- specific machines and CBN can be fully exploited. are used. Custom solutions for NAXOS-DISKUS guarantees individual machines are a must! optimisation of your processes CBN and diamond grinding wheels with maximum efficiency. from NAXOS-DISKUS are designed and manufactured exclusively for CBN grinding wheel for the customer-specific use in circular grinding of synchronizer cones on BUDERUS grinding machines. and face grinding applications. 8 9 Grinding Grit types wheel AREAS OF APPLICATION FOR DIAMOND AND CBN TOOLS construction METALS NON-METALS

FERROUS NON-FERROUS ANORGANIC ORGANIC METALS METALS MATERIALS MATERIALS

Soft Aluminium alloy Cermets Rubber (hard) Non-alloy Copper alloy Ferrites Rubber (soft) Low-alloy Magnesium alloy Glass Wood High-alloy Nickel-based alloy Semi-conductor mat. Plastics Body NAXOS-DISKUS grinding wheels With our vitrified and synthetic Titanium alloy Ceramics Food Hard Carbides Stone are available with a body made resin bonded CBN and diamond Low-alloy of steel, aluminium, aluminium abrasives, we can supply you a High-alloy wrought alloy, synthetic resin, tool to rely on. Chilled cast iron ceramic or carbon fibre laminate. CBN Diamond

CBN body variants CBN AND DIAMOND GRIT TYPES

DUCTILITY DIAMETER V MAX HEAT MATERIAL C DAMPING WEIGHT COSTS CODE TYPE GRIT SHAPE COLOUR SURFACE IN MM IN M / S EXPANSION (TI) TTI

medium- Steel 80 – 750 200 985A CBN black rough blocky

medium- Aluminium 50 – 350 63 979A CBN black smooth blocky

Aluminium irregular 80 – 700 200 986A CBN to pointed orange wrought alloy rough

medium- Synthetic resin 100 – 600 63 984A CBN dark brown very smooth blocky

Ceramic 20 – 750 80 972A Diamond blocky black smooth

CF laminate 100 – 500 200 973A Diamond cubic yellow rough

low high low high 10 11

Grit sizes

GRIT SIZE DEPENDS ON APPLICATION AND SURFACE QUALITY SPECIFICATIONS NAXOS CBN

FEPA US-MESH SIZE IN µM MICRO GRIT 999A B126 V240 K 11 AUMENTO

Concentration 181 80 / 100 180 / 150 600* 40 / 30 Grit type Grit size Hardness Structure Bonding in volume M 40 151 100 / 120 150 / 125 700* 36 / 22 in volume 46 µm 120 A 7 VNX1

126 120 / 140 125 / 106 800* 30 / 20 998A 54 µm 180 B 8 AUMENTO M 25 107 140 / 170 106 / 90 1100* 22 / 12 997A ...... AUMENTO pro

91 170 / 200 90 / 75 M 16 1200* 20 / 10 ... 213 µm 420 U 26

76 200 / 230 75 / 63 M 10 1600* 12 / 8 710A

64 230 / 270 63 / 53 M 6,3 3000* 8 / 4

54 270 / 325 53 / 45

46 325 / 400 45 / 35 SPECIFICATIONS NAXOS DIAMOND * Approximately equivalent mesh size

999A D126 C100 K 11 VND1

Concentration Grit type Grit size Hardness Structure Bonding in volume CONCENTRATION IN VOLUME COATINGS 999A 46 µm 25 C 7 Ke 114

DIAMOND CBN 998A 54 µm 50 D 8 ...

DENSITY 3.52 g / cm3 DENSITY 3.48 g / cm3 997A ...... VND1

C (V %) in ct / cm3 V (V %) in Vol.-% ... 213 µm 200 Q 26

C 25 1,1 V 60 6,25 710A

C 50 2,2 V 120 12,5

C 75 3,3 V 180 18,75

C 100 4,4 V 240 25

C 125 5,5 V 300 31,25

C 150 6,6 V 360 37,5

C 175 7,7 V 420 43,75

C 200 8,8 V 480 50 12 13

AUMENTO Pro – Thanks to the further optimised grinding coolant to the grinding stability of Aumento Pro, the contact zone, thus supporting the top performance CBN abrasive grit is bonded very removal of grinding sludge and the tightly into the matrix. This makes grinding temperature. The grinding it possible to reduce the bond forces required are also reduced, hare even further, yet at the thus lowering the grinding pressure same time increase the bonding used in the process. strength of the abrasive grit. In practice, this leads to an The test results clearly prove that additional increase in grinding the process parameters feed and wheel performance. Furthermore, infeed rate were increased by 20 % higher parameters for feed and when the advanced development infeed rates can be realised. Aumento Pro was used compared with Aumento. The resulting Reducing the bond share also reduction in operating time frees increases the pore space, which up more production resources and in turn increases the supply of reduces the costs per workpiece.

The key component: Bondings AUMENTO bonding EXPLANATION OF THE NAXOS BONDINGS INTEGRATION TYPE OF BONDING STRENGTH APPLICATION ABILITY BONDING

Vitrified Precision grinding, VNX1 Low Medium (vitreous) low to medium load

Vitrified Precision grinding, high load AUMENTO High High (vitreous) (crankshaft, camshaft, peel grinding) AUMENTO AUMENTO is a vitrified bond. The AUMENTO PRO also has an even advantage here is that the bonding greater bonding strength. AUMENTO Vitrified Precision grinding, high load share can be reduced in the grinding Very high Very high pro (vitreous) (crankshaft, camshaft, peel grinding) wheel, thus increasing the share of COMPARISON OF DIFFERENT pore space. In turn leading to a TYPES OF BONDING Vitrified Bonding for diamond VND1 High High cooler grinding process. In addition, (vitreous) developed on the basis of AUMENTO tests on a Buderus CNC 235 have 6 shown that significantly higher 5 Synthetic resin bonding for external cylindrical grinding. BNX1 Medium Medium Synthetic resin feeding rates can be achieved for 4 Good damping properties. the plunge grinding of gear shafts 3 without any reduction in workpiece Synthetic resin bonding for face grinding and face finishing. 2 quality, generating cost savings B26 Medium Medium Synthetic resin Very good damping properties with good grit bonding. Precision grinding e.g. for piston rings or pump vanes. for customers. Aumento Pro is 1

an advanced development of the 0 Synthetic resin bonding for face grinding and face finishing. Bonding Supply rate Q‘w Aumento bonding with an even hardness B36 Medium Medium Synthetic resin Very good damping properties with good grit bonding. Very cool grinding, for large workpiece areas. better performance. VNX1 AUMENTO AUMENTO pro 14 15

Forms

DESIGNATION OF THE GRINDING WHEELS IN ACCORDANCE WITH FEPA This designation example is intended to support you with selection of the optimum shape of grinding wheel.

DESIGNATION EXAMPLE: 6A2B DESIGNATION EXAMPLE: 14A1

Body version 6 A 14 Body version D

X A Coating shape 2 A Coating shape U T 6 2 Coating position

H 1 Coating position B Modification of the body B J

POSITION OF VERS. STANDARD SHAPES VERS. COATING SHAPE VERS. COATING SHAPE VERS. COATING SHAPE VERS. MODIFICATION COATING SHAPE THE COATING

A J B Drilling and sinking 1

1 Circumference C Countersinking AH K 2 H Drilling B L M Bore and thread 3 C LL 2 One side P Free turning

4 CH M Q Enclosed coating 3 Both sides D P R Undercut 6 Angled inwards 4 or concave S Coating segmented DD Q Angled outwards 5 or convex 9 Coating segmented SS and serrated E QQ

V° Part of the T Cut thread 6 circumference 11 V = smaller than 90° EE S larger than 45°

Sunken V° F U V diamond coating Part of the side 12 V = 45° or smaller 7

FF V 8 Completely filled W On a shaft 14 G Y Specific part of 9 the circumference Coating enclosed Y or sunken 15 H 10 Inner ring 16 17

OVERVIEW OF SUPERABRASIVE SHAPES OVERVIEW OF SUPERABRASIVE SHAPES

ORDER DATA AREA OF ORDER DATA AREA OF SHAPE DESIGNATION SYMBOLIC IMAGE SHAPE DESIGNATION SYMBOLIC IMAGE REQUIRED APPLICATION REQUIRED APPLICATION

D D

X External cylindrical Straight grinding D × T × H R(1) 1A1 grinding, Centerless X Crankshaft wheel U − X Straight D × T × H T=U Crankshaft 1L1 External cylindrical grinding wheel T=U U − X (R) grinding H R(2) H

D Straight grinding X D × T × H D 1A1R wheel with cut Cutting T=U U − X away area Straight X Peel grinding grinding wheel D × T × H E U H 3A1 T External cylindrical shouldered U − X grinding at one side S° H Y Y J

D L Cylindrical L D × T 1A1W Internal grinding Straight X N mounted point U − X − Y grinding wheel D × T × H Tool T UNKLAR! 4A2 E tapered S° W − X grinding AILBEZEICHNUNGEN

T at one side H U U

D E J D D

D Y Y

Straight X N grinding wheel D × T × H Tool 4B9 E T tapered S° W − X grinding at one side L Cylindrical L D × T H 1A8W Internal grinding J mounted point U − Y

UNKLAR! DETAILS

AILBEZEICHNUNGEN UNKLAR T D U U D E

Straight X N

D D grinding wheel D × T × H Tool 4BT9 E T tapered S° W − X grinding at one side D H

J Straight X D × T × H 1FF1 Tool grinding grinding wheel U − X (R) DETAILS T=U UNKLAR D R

DETAILS X N UNKLAR D × T × H Tool D 4C2 Disc wheel E T S° W / U − X (R) grinding Straight grinding X D × T × H H 1F1R wheel with cut Tool grinding U − X (R) J away area T=U DETAILS R UNKLAR

D

J Straight X W X External grinding wheel S° D × T × H Tool Straight grinding D × T × H 4ET9 E T 1V1 cylindrical tapered W − X grinding wheel T U − X − V° on one side grinding H

J H

V° D 18 19

OVERVIEW OF SUPERABRASIVE SHAPES OVERVIEW OF SUPERABRASIVE SHAPES

ORDER DATA AREA OF ORDER DATA AREA OF SHAPE DESIGNATION SYMBOLIC IMAGE SHAPE DESIGNATION SYMBOLIC IMAGE REQUIRED APPLICATION REQUIRED APPLICATION

Mod. A

D D K K N X W X Tapered D × T × H Tool 11A2 T cup wheel W − X grinding T E E H H J Cylindrical D × T × H Double face 6A2 DETAILS cup wheel W − X grinding Mod. B UNKLAR D

K W D

W X K

X T T E Tapered S° D × T × H Tool 11A2B E cup wheel W − X grinding H DETAILS H UNKLAR ? W J

Cylindrical D × T × H Tool 6A2H cup wheel W − X grinding

H D

W K

DETAILS X UNKLAR Tapered D × T × H Tool 11A9 T D cup wheel S° E W − X grinding

W K

H

X Cylindrical D × T × H Tool J 6A2M T cup wheel W − X grinding

S°

H D J W K

DETAILS X Tapered D × T × H Tool UNKLAR 11V9 T cup wheel E W − X grinding

D H W Cylindrical S° K D × T × H Tool J 6A9 X cup wheel W − X grinding T E

D H K W X 12A2 D × T × H Tool Disc wheel 20° T Mod. A 20° E W − X grinding D H W X J

Straight External grinding wheel H D × T × H 9A3 cylindrical D shouldered W − X grinding K Mod. B W X at two sides D

W1 12A2 D × T × H Tool X Disc wheel 45° T 45° E W − X grinding

H

J H 20 21

OVERVIEW OF SUPERABRASIVE SHAPES OVERVIEW OF SUPERABRASIVE SHAPES

ORDER DATA AREA OF ORDER DATA AREA OF SHAPE DESIGNATION SYMBOLIC IMAGE SHAPE DESIGNATION SYMBOLIC IMAGE REQUIRED APPLICATION REQUIRED APPLICATION

D D K K W W X D × T × H Tool D × T × H Tool 12C2F Disc wheel ? 12A2F Disc wheel T W / U − X grinding ? T W − X grinding E E ?

H H J J

D

G K D K W X W D × T × H Tool 12V2 Disc wheel T W − X grinding X T D × T × H Tool E 12A2T Disc wheel S° W − X grinding H

H J

? J

D

W K

D K X W D × T × H Tool 12V9 Disc wheel T W − X grinding E

X T D × T × H Tool 12A2ZST Disc wheel S° W − X grinding H

H J

? J

D

Straight X External D grinding wheel D × T × H U T W 14A1 cylindrical grinding, K shouldered U − X Centerless Camshaft X D × T × H Tool at two sides H 12A9Z Disc wheel T S° W − X grinding J

H

J

D X Straight grinding wheel D × T × H Angled plunge D 3EE1V V° U T K shouldered U − X – V° grinding gear shaft

at one side H W D × T × H Tool 12B9N Disc wheel J X E T W − X grinding

S° H J

D K W

D × T × H Tool 12C2 Disc wheel X T S° W − X grinding E All the grinding wheels shown (except for the mounted points) are manufactured with a diameter of 10 to 1000 mm H J at NAXOS-DISKUS. It goes without saying that we design your custom-made grinding wheels according to your application. We can of course also produce special designs according to your wishes. 22 23

CBN-Oberflächen- Schleifscheibe mit Stahlkörper und keramischer Bindung 24 25

Request form

1. CUSTOMER INFORMATION 6. GRINDING TOOL

Customer Date Shape Dimensions

Address Competitor Specification

Contact VC Price

Department

Phone E-mail 7. DRESSING TOOL

rotating/fixed Dimensions

2. GRINDING APPLICATION Supplier Specification

8. GRINDING PARAMETERS

Grinding type Vc

ae snagging ae finishing 3. WORKPIECE DATA Vf snagging Vf finishing

Workpiece des. Number n w of strokes Dimensions

Material

9. DRESSING PARAMETERS Heat treatment Hardness

Dressing cycle V Stock removal c

Vr qd

aed Var 4. GRINDING MACHINE

Manufacturer Model

10. OPERATING TARGETS VC PS

Condition Surface quality Tool life

Profile retention Operating time

5. COOLANT TYPE

Coolant type CL volume 11. OTHER DATA

CL pressure Employee first name Employee surname

HD cleaning pressure Volume Recording date Recording type 26 27

Technical information

Customer group Automotive

Sub-group Engine

Grinding application External cylindrical grinding

Workpiece Crankshaft 4-cylinder passenger car

Application Main bearing with radius

Material GGG70

Stock removal max 0.55 mm

Hardness 55 -2 / +4 HRC

Machine Landis

Coolant type Oil

Wheel speed 82 m / s

Feed rates

Dressing cycle 320 main bearing points

Dressing amount 6 × 0.0015 mm

Tool life 142,222 ground main bearing points

Surface Rz is 2.5

Wheel dimensions 14A1 T 600-40-21.3-5-140 H5

Specifi cation B151 V360 L 15 AUMENTO

Contact Mr Arnold

Remarks Improvement for customer: Reduction of price per workpiece by € 0.02. MitgliederMitglieder dderer D DVSVS TECHNOLOGY TECHNOLOGY G GROUPROUP 28 in i cel l

MembersMembers of o fthe the DVS DV STECHNOLOGY TECHNOLOGY GROUP GROUP ma r

DVS MACHINE TOOLS & AUTOMATION

DVS MACHINE TOOLSBUDERUS & AU SchleiftechnikTOMATION GmbH | www.buderus-schleiftechnik.de Innenrundschleifen – Außenrundschleifen – Gewindeschleifen – Bohrungshonen – Hartdrehen | BUDERUSI.D. grinding Sch –lei O.D.ftech grindingnik GmbH – Thread www .grindingbuderus -–sc Borehleift honingechnik . d–e Hard turning Innenrundschleifen – Außenrundschleifen – Gewindeschleifen – Hartdrehen I.D. grinding – O.D. grinding – Thread grinding – Hard turning DISKUS WERKE Schleiftechnik GmbH | www.diskus-werke.de Planseiten-Schleifen – Doppel-Planseiten-Schleifen – Sonderbearbeitung | DISKUSFace grinding WERK E– SDoublechleifte facechni kgrinding GmbH –ww Specialw.disk machiningus-werke.de Planseiten-Schleifen – Doppel-Planseiten-Schleifen – Sonderbearbeitung Face grinding – Double face grinding – Special machining DVS Universal Grinding GmbH | www.dvs-universal-grinding.de Kombinierte Hartfeinbearbeitung für Klein- und Mittelserien | PITTLERCombined T&S Hardfine GmbH wwMachiningw.pittle rfor.de small and medium size batches Vertikal-Drehbearbeitungszentren & Pick-up-Systeme – Verzahnen in der Komplettbearbeitung Vertical turning center & Pick-up systems – Gear cutting for complete machining PITTLER T&S GmbH | www.pittler.de Vertikal-Drehbearbeitungszentren & Pick-up-Systeme – Verzahnungszentren | PRÄWEMAVertical turning Antr iecentersbstech andnik GmbH Pick-up wwsystemsw.pra –e Gearwem cuttinga.de centers Verzahnungshonen/-schleifen – Verzahnungsfräsen – Anspitz-/Hinterlegungsfräsen Gear honing – Gear grinding – Hobbing/Fly-cutting – Chamfering PRÄWEMA Antriebstechnik GmbH | www.praewema.de Verzahnungshonen/-schleifen – Verzahnungsfräsen – Anspitz-/Hinterlegungsfräsen | WMSInternal We andrkzeug Externalmasch Gearinenb honingau Sinsh – eiGearm Gm grindingbH ww – wHobbing/Fly-cutting.wms-sinsheim.de – Chamfering Service-Dienstleistungen – Generalüberholungen – Reparatur von Baugruppen Maintenance – Machine Retrofit – Repairs WMS Werkzeugmaschinenbau Sinsheim GmbH | www.wms-sinsheim.de Service-Dienstleistungen – Generalüberholungen – Reparatur von Baugruppen | WMZMaintenance Werkzeug – Machinemaschine Retronbaufi Zit e–g Repairsenhain GmbH www.wmz-gmbh.de Dreh- & Kombinationsbearbeitung wellenförmiger Bauteile – Motorspindeln Turning & Combined machining of shafts – Motor spindles WMZ Werkzeugmaschinenbau Ziegenhain GmbH | www.wmz-gmbh.de Dreh- & Kombinationsbearbeitung wellenförmiger Bauteile – Motorspindeln Turning & Combined machining of shafts – Motor spindles DVS TOOLS & COMPONENTS DVS TOOLING GmbH | www.dvs-tooling.de DVS TOOLS & COMPONENTSWerkzeuglösungen und Technologiesupport für das PRÄWEMA Verzahnungshonen Tool solutions and technology support for PRÄWEMA gear honing DVS TOOLING GmbH | www.dvs-tooling.de Werkzeuglösungen und Technologiesupport für das PRÄWEMA Verzahnungshonen | NAXOS-DISKUTool solutions Sand Schle technologyifmittelwer supportke GmbH for PRÄWEMA www.naxo gears-dis kuhonings.de Konventionelle Schleifwerkzeuge – CBN & Diamantwerkzeuge Conventional grinding tools – CBN & Diamond tools NAXOS-DISKUS Schleifmittelwerke GmbH | www.naxos-diskus.de Konventionelle Schleifwerkzeuge – CBN & Diamantwerkzeuge Conventional grinding tools – CBN & Diamond tools DVS PRODUCTION DVS Production GmbH & DVS Technology GmbH | www.dvs-production.de DVS PRODUCTION DVS Technologien in der Serienfertigung für PKW-Komponenten DVS Technologies in mass production for passenger car components DVS Production GmbH | www.dvs-production.de DVS Technologien in der Serienfertigung für PKW-Komponenten | FRÖHLICHDVS Technologies CNC Pro indu massktion production GmbH ww forw. cpassengernc-froehli chcar.d componentse DVS Technologien in der Serienfertigung für Nutzfahrzeug-Komponenten DVS Technologies in mass production for commercial vehicle components DVS Production South GmbH | www.dvs-production-south.de DVS Technologien in der Serienfertigung für Nutzfahrzeug-Komponenten DVS Technologies in mass production for commercial vehicle components DVS INTERNATIONAL SALES & SERVICE DVS Technology America, Inc. | www.dvs-technology.com

DVS INTERNATIONALDVS SALES Sales && S eSERVICErvice in USA, Canada & Mexico V2 -DE- HDM 11 - .

DVS Technology America, Inc. | www.dvs-technology.com 6 1

DVS Technology (Shenyang) Co., Ltd. | www.dvs-technology.com 0

DVS Sales & Service in USA, Canada & Mexico 2 -

DVS Sales & Service in China X A N DVS Technology (Shenyang) Co., Ltd. | www.dvs-technology.com | DVSDVS TSalesechn o&l ogyService Eur opin Chinae GmbH www.dvs-technology.com DVS Sales & Service in South Europe

DVS Technology Europe GmbH | www.dvs-technology.com DVS Sales & Service in Europe

NAXOS-DISKUS Schleifmittelwerke GmbH Tel +49 (0) 6033 899-0 Werner-von-Siemens-Straße 1 Fax +49 (0) 6033 899-300 D-35510 Butzbach Mail [email protected] www.naxos-diskus.de www.dvs-technology.com