Gemex Business concept Gemex : Gemex shall be a natural part of an efficient belt transmission Gemex...
-
Upload
reese-cager -
Category
Documents
-
view
220 -
download
0
Transcript of Gemex Business concept Gemex : Gemex shall be a natural part of an efficient belt transmission Gemex...
GemexBusiness concept Gemex : • Gemex shall be a natural part
of an efficient belt transmission
• Gemex shall be synonymous
with high competence and solutions, which are technically simple and economically optimal
Gemex
Gemex provides:
Always correct alignment.
Always correct belt tension.
Always minimum downtime.
Gemex
What about ”motor attachments”?
The motor attachment is not only an attachment, it’s the tool for maintenance and the function and quality of this tool will of cause decide whether you succeed or fail in having an effective maintenance. Above all it’s the tool that shall guarantee the best possible function of the belt drive, correct rpm, long lifetime of the components and highest possible efficiency.
Gemex is much more than just a motor attachment.
GemexGemex provides:
Higher availabilityOptimum conditions gives maximum lifetime to the components.The design makes it possible to drasticly reduce the time needed for maintenance/repairs. To shift belts takes no longer than 15-30min, a retentioning of the belts takes maximum 2min.= Longer time between downtime and shorter downtime.
Problems today
Correctly installed v-belts have a lifetime of 25 000 hours, in general, and a theoretical efficiency of 97%.
Lifetime in reality!
30% of the belts have a lifetime of 5 000 hours or less. 50% of the belts have a lifetime of between 5´ and 12 500 hours. 20% of the belts have a lifetime of 12 500 hours or more.
Gemex
Are belt transmissions up-to-date?
Some people argue that belt drives are not up-to-date, that the function is not satisfying. They are partly right, but the belt drive is not the problem, it's the maintenance that is out of date and that is because the tools for maintenance are not by far reaching the demands of modern industry.The solution is not to change the type of transmission but the tools for maintenance.All types of transmissions need maintenance, and knowledge of how to do it properly.
Reduce ”everyday problems”
0%
100%
Unavialability
The number of breakdowns will reduce when reducing the number of ”everyday problems”
Time
Breakdowns
Gemex
Gemex provides:
• Higher efficiency
Optimum conditions gives minimum losses and a better power transmission to the machine.To low belt tension or not correct retensioning leads to accelerated wear of components and losses in rpm wich often influence the production directly.Inexact alignment leads to higher friction and thereby lower efficiency and a rapid wear of belts and pulleys wich leads to a poorer power transmission.
Problems today Flexure of shafts
Flexure of shafts, which is a relatively unknown problem in the industry, lowers the efficiency and increases the wear of belts, pulleys and bearings.
The problem is that the static load of tensioned belts bend the axles, if the pulleys are aligned with the axles bent, then the drive will run with incorrect alignment.
Problems today
1. The belts are tensioned.
Traditional tensioning rulers
Problems today
1. The belts are tensioned
2. Aligning is done with tension on the belts.
Traditional tensioning rulers
Problems today
1. The belts are tensioned.
2. Aligning is done with tension on the belts.
3. When the rpm increase the shafts will straighten and the alignment will become poor.
Traditional tensioning rulers
Project Stora Enso Fors• The machine is a pump for chips.
• Motor power = 110 kW.
• Belts/pulleys SPB 8 grooves.
• Before the first measure new belts and pulleys where installed, the belts were tensioned as recommended by manufacturer and the drive were aligned using a laser alignment tool. The motor was attached on a traditional motor mount.
• The second measure had the same conditions as the first with new belts and pulleys. The motor was attached on a Gemex motor mount. Alignment was carried out with no load on the axles to avoid problems with flexure of shafts.
Project Stora Enso ForsMeasured efficiency
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
Trad. motor mount Gemex
Project Gruvön
Energy consumption at different degrees of angular faults (Wet transport fan, Billerud Gruvön)
Angular displacement
Energy demand Increase Extra cost
None 208 kW
0,54 219 kW 5,30% 22 000 SEK 1,08 225 kW 8,20% 34 000 SEK
Extract from study made of the University of Karlstad.
Energy losses
Flexure of shafts Incorrect alignment of the drive. Vibrations derived from the belts. Belts with incorrect tension or unequal lengths. Frequently changed belts. Belts and pulleys which are worn.• Generally bad maintenance.
This will lead to that the belt drive dosn´t do the work it´scalculated to do.
GemexGemex provides:
• Maintenance-savingsLower component consumtion and a lower cost of doing the maitenance work. I general reduces the Gemex customer his consumption of components with aprox. 60%.The time for belt changes and retentioning reduces to a fraction compared to traditional systems.
Both to high belt tension and inexact alignment leads to higher loads and wear of shafts and bearings.
Gemex provides a guaranteed high quality of the maintenance work.
Problems today
In some situations urgent reasons leaves no choice but to use force to bend new belts in place. This will either result in too low belt tension, or cause damaged pulleys and/or belts.Furthermore many serious hand/finger injuries have been caused by actions like this.
Solve the cause of the problem!
What about belts in real life?
Gemex
What shall you expect from the maintenance tools?
It's not reasonable that it shall take one or several hours for one (or even two!) skilled mechanic/s to change belts on a machine. It's not reasonable that you have to realign the belt drive and measure the belt tension in a complicated way if you only want to re-tension the belts.
Belt drives are small links in the chain of production, but they are important! In an effective industry they should not cause any problem.
Gemex provides
• Higher availability
• Higher efficiency
• Maintenance-savings
Gemex Installations
Top mounted Horizontally mounted Vertically mounted
Some of our Scandinavian customersAlbany International ABAmersham, UppsalaAstraAvestaPolaritBillerud, KarlsborgBillerud, GruvönBoliden ABByggelit, LaxåCementa, SliteCrane AB, TumbaDalum Papir, Odense DenmarkDanisco Sugar, EslövEnso Oublication, FinlandFranschachFundia, Mo i Rana NorwayGlomma Papp A/S NorwayHolmen Paper, HallstavikKappa Kraftliner, Piteå
Stena fragmentering, Huddinge
StoraEnso, Fors
StoraEnso, Kvarnsveden
StoraEnso, Hyltebruk
Södra Cell Värö Bruk
Titania, Norway
UPM - Kymmene Finland
UPM - Rauma Finland
UPM - Jakobstad Finland
Vattenfall, Drefviken
Vattenfall, Uppsala
Zinkgruvan
Kemira Chemicals, Finland
Korsnäs AB
Lagamill, Markaryd
LKAB
Luftfartsverket Arlanda
Modo, Husum
Mondo Minerals OY, Munksjö
Norsk Hydro, Norway
Nynäs Refining
Ovako Steel, Hofors
Outokumpu, Kemi Finland
SBE, Ulricehamn
SBE, Norberg
SCA Ortviken
SCA Wifsta, Östrand
SCA Packaging, Munksund
SSAB Luleå, Oxelösund
Some of our customers outside Scandinavia ABB BeneluxAGFA, BelgiumAir Traitement, FranceAkzo Nobel, HollandALZ Steel, BelgiumArtic Paper, PolandBASF, BelgiumBayer, BelgiumBekaert, BelgiumBelgomilk, BelgiumBorealis, Holland, BelgiumBP, Belgium, USABurgo Ardennes, BelgiumCargill, BelgiumCelanese, BelgiumCBI, ItalyCBR, BelgiumCarmeuse, BelgiumCloos, Luxemburg
Stora Enso, Belgium
Philips, Holland
Prayon, Belgium
Procter & Gamble, Belgium, USA
Sappi, Belgium, Holland
Solvay, Belgium
Sult, Germany
Terumo, Belgium
Tessendelo group, Belgium
thermPhos, Holland
Timac Potasco, Belgium
TotalFinaElf, Belgium
UCB, Belgium
Umfurm Technik Erfurt, Germany
Unilin, Belgium
Volkswagen, Belgium, Germany
VPK Paper Industry, Belgium
Cockerill Sambre, Belgium
Corus, Holland
Dalkia, Belgium
Disa, Germany, Czech Rep.
Duracell, Belgium
Electrabel, Belgium
Evtac Mining, Canada
Feller Rock, Belgium
Ford cars, Belgium, Germany
Gefi, France
GlaxoSmithKline, Belgium
Heckett Multiserve, France
Huntsman, Holland
Intermoselle, Luxemburg
Isvag, Belgium
Kappa, Belgium, Holland
Monsanto, Belgium
Norit, Holland
Norske Skog, Holland