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GST – Grinding technology

Passion, dedication and hard work 1992 GST is founded by former

employees of Elb-Heid-MSO (manufacturer of grinding machinery since 1979)

2011 The company expands its headquarters – the number of staff has increased to 50 employees

2016 The current workforce counts 79 employees and includes 7 trainees

2017 The production area and the office building are doubled in size

Our products and services

Design and manufacture of grinding machines for engine and transmission manufacturing in the automotive industry

Upgrading and overhaul of machine tools (grinders, lathes, milling machines,…)

Inspection, maintenance and repair of machine tools and their components

Technology

Tools: Corundum C grinding wheels Electroplated and vitrified bonded

CBN (Cubic Boron Nitride) grinding wheels

Grinding of: Diameters Plane surfaces Grooves

Non-round contour Surfaces

Dressing technology

Diamond blade dresser - for simple contours, small batch

sizes, great variety of parts, large removal, high

cost-efficiency Profile roll - for complex contours, large batch sizes,

no variety of parts, fast Form roll - for complex contours,

small batch sizes, great variety of parts, high accuracy

(State-of-the-art)

In-house tool spindle construction

Grinding spindle with precision bearing offering high stiffness and load capacity

Ceramic or steel bearing, as required Hydrostatic spindle bearing

possible Permanent oil-air lubrication Constant optimum ratio between

load distance and spindle bearing packages thanks to the in-house design

The following tolerances can be achieved with GST machine tools:

Tolerances

Diameter +/-4,5µm

Roundness 3µm Parallelism, surface 2µm Concentricity 2µm Roughness Rz 2

Overview of circular grinding machines

GST COMPLETE - Transmission / Powertrain

GST JET - Engine components

GST Service & Retrofit GST Automation & Accessories

GST COMPLETE / JET - Double Cycle

Go to: Engine – Transmission / Drive train – Double Cycle – Auto. & Accessories – Retrofit – End

GST JET - Engine components

Grinding of:CrankshaftsCamshaftsBalancing shaftsRotor shafts (E-Mobility)Piston rings

Double-spindle orbital grinderDouble Jet Orbital CBN

Double Jet Orbital CBN

Double-spindle grinder for the simultaneous grinding of crankshaft main and pin bearings using CBN grinding wheels

Double Jet Orbital CBN

Grinding wheel feed movements up to 25 m/min and accelerations up to 4 m/s²

Feed drive with linear motor and direct linear encoder Hydrostatic slide guidance Each hydrostatic pocket is

supplied by a progressive volume controller

Double Jet Orbital CBN

Excellent damping properties and strong rigidity of the hydrostatic slide guides

Workpiece spindle with torque motor Workpiece drive synchronized

with rotary axis, for precise position control of the pendulum stroke movement

Hydraulically swivelling in-process measuring heads for diameter measuring

Double-spindle angular infeed grinderDouble Jet CBN

Double Jet CBN

Double spindle grinder for simultaneous grinding of crankshaft flanges and journals using CBN grinding wheels

Double Jet CBN

Simultaneous complete grinding of flanges, journals, balance shaft seats and encoder wheel seats of crankshafts

Centre drive for workpiece rotation Hydrostatic slide guidance and

linear drive technology possible Hydrostatic spindle bearings

optional Self-centering lunettes Cycle times of approx.

55sec/workpiece can be achieved

Double Jet CBN

Additional cross slide with internal grinding spindle for the simultaneous machining of the needle bearing hole (option)

In-process measurement for needle bearing holes (option)

Single-spindle straight infeed grinderSingle Jet Profile CBN

Single Jet Profile CBN

Single spindle straight or angular infeed grinder with CBN grinding wheels for non-circular contours

Optimal application for the cam contour of camshafts

Single Jet Profile CBN

Hydrostatic guidance system and linear drive technology

Designed for a production capacity of up to 1,200 parts/day in three-shift operation

Single-spindle straight or angular infeed grinderSingle Jet CBN

Single Jet CBN

Single spindle straight or angular infeed grinder with CBN grinding wheels for diameters

Optimal application for flanges, journals, balance shaft seats and encoder wheel seats of crankshafts as well as for main bearings of camshafts

Single Jet Profile CBN

Hydrostatic guidance and linear drive technology

Designed for a production capacity of up to 1,200 parts/day in three-shift operation

Single Jet CBN

Additional cross slide with internal grinding spindle for the simultaneous machining of needle bearing holes (option)

In-process measurement for needle bearing holes (option)

Single-spindle multi-wheel grinderMulti-wheel C

Multi-wheel C

Single-spindle multi-wheel grinder with flange-mounted wheel sets for the simultaneous machining of all main bearings

Multi-wheel C

Corundum grinding wheel set with flange mount, no counter support necessary

Stable spindle with roller bearing for grinding wheel sets of max. Ø 750 mm and 500 mm width

Designed for a production capacity of up to 1,200 parts/day in three-shift operation

Multi-wheel C

Short tooling times due to changing devices, the automated set-up and the automatic adjustment of the table assemblies

Tooling times <15 min can be achieved, making the machine optimally suited for small batch sizes

Grinding wheel magazine available as an option

Go to: Engine – Transmission / Drive train – Double Cycle – Auto. & Accessories – Retrofit – End

GST Complete - Transmission / PowertrainFor the grinding of:Drive shaftsTransmission shaftsCountershaftsGear wheelsBevel pinion shaftsPlanet carriersAxle stubsOthers:Pump shafts, etc.

Double-spindle straight infeed grinderComplete C/CBN

Complete C/CBN

Double-spindle grinder using corundum grinding wheels for diameters and CBN wheels for plane surfaces and grooves

Complete C/CBN

For the complete grinding of diameters with corundum grinding wheel sets

Simultaneous straight infeed grinding of diameters, plane surfaces and grooves using electroplated CBN wheel sets

Cycle times of approx. 55-65 sec / workpiece can be achieved

Complete C/CBN

The use of corundum grinding wheel sets with a diameter of up to 750 mm and a width of up to 500 mm is possible

Automatic in-process cylinder compensation via measuring instruments

Path-controlled dressing allows the creation and the correction of different contours

Two-spindle universal grinding machineComplete Universal CBN

Complete Universal CBN

Universal grinding machine with 2-3 spindles on an NC rotary table with CBN grinding wheels

Complete Universal CBN

Complete grinding of the diameters and plane surfaces with vitrified bonded CBN wheel sets

Grinding of diameters and shoulders of transmission shafts with 2-3 spindles

Large grinding spindle permitting the use of wider wheel sets -> shorter cycle times

The use of 2 workpiece spindles facilitates machining of the entire workpiece length

Complete Universal CBN

100% In-process measurement is possible, contrary to single seat grinding

Post-process measuring station, parts cleaning stations, parts feeding, etc. can be integrated into the production cell

Designed for the production of small batches and of frequently changing products

Loading by integrated linear system or robot

Single-spindle straight or angular infeed grinderComplete C

Complete C

Single-spindle straight or angular infeed grinder with corundum grinding wheels

Complete C

Corundum grinding wheel sets with a diameter of up to 750 mm and a width of up to 500 mm can be used

Automatic in-process cylinder compensation via measuring instruments

Path-controlled dressing allows the creation and correction of different contours

Go to: Engine – Transmission / Drive train – Double Cycle – Auto. & Accessories – Retrofit – End

Single spindle straight infeed & internal grinderComplete Gear CBN

Complete Gear CBN

Grinding of hole and outer contour of gears in just one clamping setup with 2 spindles

Complete Gear CBN

Grinding of hole and outer contour of gears in just one clamping setup with 2 spindles

Complete grinding of the hole and outer contour with a vitrified bonded CBN wheel set

In-process measurement is possible for hole and outer contour

Designed for a production capacity of up to 4,000 parts/day in three-shift operation

Go to: Engine – Transmission / Drive train – Double Cycle – Auto. & Accessories – Retrofit – End

Half the cycle time for more outputDouble Cycle - Jet / Complete Half the cycle time for both machine types

Half the cycle time for more outputDouble Cycle - Jet / Complete

Two workpiece shuttle slides for the simultaneous machining, loading and unloading -> the clamping device moves

Double Cycle - Principle 1

Two clamping devices for simultaneous machining, loading and unloading -> the grinding spindle moves

Double Cycle - Principle 2

Double Cycle The GST Double Cycle machine replaces 2-3 conventional

machines which results in lower investment costs It requires less space, less energy and less operating supplies No non-productive times – times

for loading, unloading, clamping and unclamping are eliminated

Grinding with just one clamping setup with no need for reclamping

Designed for a production capacity of up to 1,600 parts/day in three shift operation

Go to: Engine – Transmission / Drive train – Double Cycle – Auto. & Accessories – Retrofit – End

Automation The machine is suited both for stand-alone operation and

linked production lines Loading options: gantry loader, robot or manual loading Linear gantry loader

Accessories 1 Grinding wheel changing equipment Grinding wheel transport trolley Grinding wheel lifting- und turning equipment Grinding wheel magazine

Accessories 2 Blow-off station Vacuum station Centrifugal station

Go to: Engine – Transmission / Drive train – Double Cycle – Auto. & Accessories – Retrofit – End

References

Customer-specific design and manufacture

Compact and robust construction Short grinding and cycle times Machining of parts with just one

clamping setup Two grinding wheels at the same time Automatic loading systems 3-shift production processes Very close tolerances

Solution

Time

Quality

Customized solutions

Go to: Engine – Transmission / Drive train – Double Cycle – Auto. & Accessories – Retrofit – End

Overhaul-Modernization-RevitalizationService & Retrofit

Service & Retrofit

Modernization / overhaul of machine tools Approximately 20 to 50% lower cost compared to a new

machine tool Existing tools & technologies

can be reused The modernization of your

machine tool can be implemented at the GST plant, as well as at the customer's site

Service & Retrofit - References

Schaudt Fortuna MSO HEID LandisKarstens Reinecker Cincinnati Mori-Seiki Assy NOVA Naxos Okamoto Bryant Buderus Göckel Estarta

Prorectif Danobat Microsa Herkules FAG Kellenberger GST/Promot Heinrich Schmid Blanchard Nova BWF EHM ELB/GST Weisser Kehren SMW

TOS Kö-Bau Voumard Lidköping Hartex Meuselwitz Junker Wotan Tacchella Giustina Reishauer ABA Diskus

Grinding machines

Georg FischerDemoorDörriesWeisserEmcoMagdeburgVoestHEIDSkodaHeiligenstädtAtlasWeipertTosCordini�Binns BerryDiedesheimBöhringer

OkumaFrontorVoest EmagNilesPontiggiaColmecOkumaHardingePotise

Lathes

WMW-UnionTOSWOTANPräwemaKrauseThielenhausHüller HillePfauterLorenzSixisMazakNiigataGrobSafopStrojtosKehrenHohnsberg

MikronMori-SeikiZayerHeckertSacemEx-Cell-OHellerWeragMAHOBurkardt & WeberWitzig&FrankHagen

Milling machines –machining centers

Go to: Engine – Transmission / Drive train – Double Cycle – Auto. & Accessories – Retrofit – End

RepresentativesGermanyRainer BallesSchwalbenrain 11D-63584 NiedergründauTel. +49 (6058) 2928Fax +49 (6058) 919 939

People's Republic of ChinaGST Grinding TechnologyTaicang Office143 Yanshan RoadCN-215400 TaicangTel. + 86 138 14577784

FranceGST France27 rue de la HardtF-68740 BlodelsheimTel. +33 (0) 6 3221 6779 Fax +33 (0) 3 68 33 54 45

Czech RepublicNovitrade s.r.o.Miletínská 330/8CZ-197 00 Praha 9Tel. +420 603869557

ItalyGST ItaliaTel. +33 660 341 587

TurkeyEkonomak Co. Ltd.Yasamkent Sitesi A Blok Daire:13 TR-06810 YasamkentTel. +903122402565

Industriepark 62011 Sierndorf bei StockerauAustria

Phone: +43.2267.325032Fax: +43.2267.325099

www.gst.at

Reference