DS™ - GGB - #1

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DS™ Bearing Material DS™ is a trademark of GGB. ©2010 GGB. All rights reserved. www.ggbearings.com 03-10 DS™ Bearing Material Characteristics Applications • Self-lubricating bearing material for operation in mixed film lubrication conditions • Suitable for marginally lubricated and dry operating conditions • The sliding layer is machinable (ca. 0.4 mm above bronze sinter layer) • DS™ does not cause fretting corrosion damage to the shaft under low amplitude oscillating movements • Performance is similar to DX® but with lower friction Automotive Steering gear, power steering, pedal bushes, seat slides, king-pin bushes, tailgate pivots, brake caliper bushes, etc. Industrial Mechanical handling and lifting equipment, machine slides, hydraulic cylinders, hydraulic motors, skilifts, pneumatic equipment, medical equipment, textile machinery, agricultural equipment, scientific equipment, etc. Composition & Structure Operating Conditions Availability Metal-polymer composite material Steel + porous bronze sinter + POM modified dry good Ex Stock • N/A oiled very good greased very good To order • Cylindrical bushes, thrust washers, strip and non-standard parts (all forms also available with lubrication indents) water poor process fluid poor Microsection Bearing Properties Unit Value Dry Maximum sliding speed v m/s 1.5 Maximum pv factor MPa x m/s 1.4 Coefficient of friction f – 0.15-0.30 Grease lubrication Maximum sliding speed v, greased/oiled m/s 2.5 / 10.0 Maximum pv factor , greased/oiled MPa x m/s 2.8 / 10.0 Coefficient of friction f , greased/oiled – 0.05-0.10 / 0.03-0.08 General Maximum temperature Tmax °C +130 Minimum temperature Tmin °C -60 Maximum load p static MPa 110 Maximum load p dynamic MPa 45 Shaft surface finish Ra ìm 0.4 Shaft hardness - normal HB >200 Shaft hardness - for longer service life HB >350 Sliding layer POM + fillers Porous bronze sinter Steel backing