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DU®Bearing MaterialDU® is a trademark of GGB.©2010 GGB. All rights reserved. www.ggbearings.com 03-10DU®Bearing MaterialCharacteristics Applications• Dry bearing material with good wear and frictionperformance over a wide range of loads, speedsand temperature conditions• DU® also performs well with lubrication• Available from stock in a wide range of standardsizesIndustrialAerospace, agricultural equipment, constructionequipment, material handling equipment, formingmachines - metal, plastic and rubber; officeequipment, medical and scientific equipment,packaging equipment, pneumatic and hydrauliccylinders, pumps and motors, railroad andtramways, textile machinery, valves, etc.Composition & Structure Operating Conditions AvailabilityMetal-polymer composite materialSteel + porous bronze sinter + PTFE + Pbdry very good Ex Stock• Standard cylindrical bushes, roll-formedbushes, flanged bushes, thrust washers,flanged washers, stripTo order• Non-standard partsoiled goodgreased fairwater fairprocess fluid fairMicrosection Bearing Properties Unit ValueDryMaximum sliding speed v m/s 2.5Maximum pv factor - continuous operation- intermittent operationMPa x m/s1.83.5Coefficient of friction f – 0.02-0.25Oil lubricationMaximum sliding speed v m/s -Maximum pv factor MPa x m/s -Coefficient of friction f – 0.02-0.12GeneralMaximum temperature Tmax °C +280Minimum temperature Tmin °C -200Maximum load p static MPa 250Maximum load p dynamic MPa 140Shaft surface finish Ra - dry operation µm 0.4±0.1Shaft hardness HB hardened andunhardened possibleSliding layerPTFE + PbPorous bronzesinterSteel backing