machine building & automation - Industrial Technology Magazine

MECHANICAL COMPONENTSBearings, Slides & LubricantsC-Lube Linear Way20,000km or 5 years withoutmaintenance is achievableMaintenance Free & InterchangeableC-Lube Linear WayMaintenance Free C-LubeLinear Roler Way Super MXMAG Maintenance FreeC-Lube Linear Ball SplineINTERCHANGEABLESERIES IS AVAILABLEC-Lube slide units can be suppliedseparately, and can be matched,replaced and added freely to theinterchangeable track rail. Thisseries will be useful in machinedesign, facilitating standardizationof product specifi cation and quickchanges of specifi cation.Nippon Thompson Europe B.V.Sheffi eldstraat 35-393047 AN RotterdamThe NetherlandsTel: +31(0)10 4626868www.ikont.euNippon Thompson Europe B.V.UK Branch2 Vincent AvenvueCrownhill Milton KeynesBucks MK8 0ABUnited KingdomTel: 01908 566144E-mail: sales@ iko.co.ukInnovation Know-how OriginalityInternational standard forlubricants in food processingKlüber says it is readyfor the ISO 21469certification processToday, product safetyrequirements in the food andpharmaceutical industries arehigher than ever before. Thepertinent stringent laws and regulationsapply to all materials and substancesused in the manufacturing processes,for example compressed air, lubricants,disinfectants or mould release agents.As a general rule, manufacturers shouldproactively identify any hazards andprevent errors.A key factor is the consistent use oftested materials as part of an effectiveproduct safety and qualitymanagement. There is therefore atangible demand for an internationalstandard for H1 lubricants to be usedin the food and pharmaceuticalindustries. This is why in 2006, thetechnical ISO committee for lubricantswith incidental product contact issuedthe ISO standard 21469 (ISO EN21469:2006 – Safety of machinery –Bearing doctoris the antidoteto failuresNSK’s ‘New Bearing Doctor’publication is the ideal tool toassist factory managers andmaintenance engineers in identifyingand preventing bearing failures to avoidcostly productiondowntime.The freepublication runs to35 pages and dealswith all aspects ofbearing operationincluding careand handling,mounting,lubrication andmaintenance,types of bearing damage andcountermeasures that can be adopted.MORE INFORMATION:Enter K386 or visit ‘latest issue stories’ atwww.industrialtechnology.co.uk for furtherdetails from NSKLubricants with incidental productcontact – Hygiene requirements).While the previous standard EN1672-2:2005 for hygiene requirementsto be met by food-processingmachinery had only stipulated the useof “food-grade” lubricants, the ISOstandard 21469 provides a detaileddefinition of these lubricants, and itsrequirements for product contact applynow also to cosmetic products,pharmaceuticals, tobacco and animalfeed. The ISO standard lays downhygiene requirements regarding theAdjustable clearance, lubricationfreerunning and resistance tocontamination are currenttrends in linear technology. Keeping inline with these, plain bearing expertIgus has developed a DryLin W linearguide with a ‘turn-to-fit’ function formanual setting of the clearance.You decide whether the standardclearance is required or if the unit is tobe pre-tensioned to be free fromclearance. The tolerance of themaintenance-free DryLin W system canbe adjusted over the whole bearingsurface by turning a knurled adjustmentscrew integrated into the side using anAllen key. Adjustment is in smallnotched steps that can be both heardand felt. Then the bearing fits the shaftcorrectly and can be moved linearly. Ifwear occurs, the system can simply bereadjusted.Lee Wilkins, DryLin productmanager at Igus, comments: “The aimwas to give engineers more freedomformulation, manufacture and use oflubricants which might have incidentalcontact with the product. It requiresthe lubricant manufacturers to developa hygiene strategy, taking into accountchemical, physical and biologicalhazards in the intended lubricantapplication. Based on the ISO 21469,the National Sanitation Foundation(NSF) has developed a certificationmethod.The new certification methodoffered by NSF enables lubricantmanufacturers to have themselvescertified according to ISO 21469 by anindependent and recognised institution.Klüber Lubrication has opted to live upto this international standard andentered an intensive dialogue with NSFfor this purpose. “Our goal is to haveone of the most comprehensive H1lubricant portfolios with worldwideavailability certified,” explains DavidLaing, industry group manager atKlüber.MORE INFORMATION:Enter K385 or visit ‘latest issue stories’ atwww.industrialtechnology.co.uk for furtherdetails from Klüber LubricationLinear guides featureadjustable clearanceand to improve precisioneven further.”The guide is made up of a housingand a gliding film made of technicaltribo-plastic. As well as the basicstructure and continually testedmaterials, further features include asmall design height, very low frictionand excellent wear resistance. Theguide requires no maintenance, is lowweight and has high resistance to dirtand humidity.MORE INFORMATION:Enter K387 or visit ‘latest issue stories’ atwww.industrialtechnology.co.uk for furtherdetails from Igus38More details: Write in 380INDUSTRIAL TECHNOLOGY • November 2008