DP4™ - GGB - #1

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DP4™ Bearing Material DP4™ is a trademark of GGB. ©2010 GGB. All rights reserved. www.ggbearings.com 03-10 DP4™ Bearing Material Characteristics Applications • Compliant with the European Union's End of Life Vehicles (ELV) directive 2000/53/EC on the elimination of hazardous materials in the construction of passenger cars and light trucks • Compliant with the European Union Directive 2002/ 95/EC concerning the restriction of the use of certain hazardous substances in electrical and electronic equipment (RoHS Regulation) Lubricated conditions • Good wear resistance and low friction performance over a wide range of load, speed and temperature conditions • Very good performance in oil lubricated heavy duty hydraulic applications • DP4™ offers benefits in applications where corrosion of the lead in DU® may occur • DP4™ offers improved wear and friction performance along with good chemical resistance compared to DU® Dry conditions • DP4™ perforns well dry under light duty applications • Particularly suitable for intermittent operation under reciprocating or oscillating movements Automotive Braking systems, clutches, gearbox and transmissions, hinges: door, bonnet, boot, cabriolet roof tops, pedals; pumps: axial piston, radial piston, gear and vane; seat mechanisms, steering systems, struts and shock absorbers, wiper systems, etc. Industrial Aerospace, agricultural equipment, construction equipment, food and beverage, material handling equipment, forming machines: metal, plastic and rubber; office equipment, medical and scientific equipment, packaging equipment, pneumatic and hydraulic cylinders, pumps and motors, railroad and tramways, textile machinery, valves, etc. Composition & Structure Operating Conditions Availability Metal-polymer composite material Steel + porous bronze sinter + PTFE + fillers dry good Ex Stock • Cylindrical bushes, flanged bushes, thrust washers, flanged washers and strip To order • Non-standard parts oiled very good greased good water fair process fluid good Microsection Bearing Properties Unit Value Dry Maximum sliding speed v m/s 2.5 Maximum pv factor MPa x m/s 1.0 Coefficient of friction f – 0.04-0.25 Oil lubrication Maximum sliding speed v m/s 5.0 Maximum pv factor MPa x m/s 10.0 Coefficient of friction f – 0.02-0.08 General Maximum temperature Tmax °C +280 Minimum temperature Tmin °C -200 Maximum load p static MPa 250 Maximum load p dynamic MPa 140 Shaft surface finish Ra - dry operation ìm 0.4±0.1 Shaft hardness HB >200 Sliding layer PTFE + fillers Porous bronze sinter Steel backing