DP31™ - GGB - #1

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DP31™ Bearing Material DP31™ is a trademark of GGB. ©2010 GGB. All rights reserved. www.ggbearings.com 03-10 * depending on operating conditions DP31™ 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 (the RoHS Regulations) Lubricated conditions • Excellent wear resistance and low friction performance in lubricated hydraulic applications • Excellent chemical resistance • Excellent cavitation and flow erosion resistance • Good fatigue strength Automotive Air conditioning compressors, gearbox and transmissions, heavy duty struts and shock absorbers, high performance pumps: axial piston, radial piston, gear, vane, etc. Industrial Compressors: scroll and reciprocating; pneumatic and hydraulic cylinders, high performance pumps axial piston, radial piston, gear, vane, etc. Composition & Structure Operating Conditions Availability Metal-polymer composite material Steel + porous bronze sinter + PTFE + fluoropolymer + fillers dry fair Ex Stock • N/A oiled very good greased fair To order • Cylindrical bushes, flanged bushes, thrust washers, flanged washers, strip, non-standard parts water fair process fluid good Microsection Bearing Properties Unit Value Dry Maximum sliding speed v m/s - Maximum pv factor MPa x m/s - Coefficient of friction f – - Oil lubrication Maximum sliding speed v m/s 10.0 Maximum pv factor MPa x m/s 10.0 Coefficient of friction f – 0.01-0.05 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 * ìm 0.05 - 0.4* Shaft hardness HB >200 Sliding layer PTFE + fluoropolymer + fillers Porous bronze sinter Steel backing