Bimetallic Materials SY™ - GGB - #1

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SY™ Bearing Material SY™ is a trademark of GGB. ©2010 GGB. All rights reserved. www.ggbearings.com 03-10 SY™ Bearing Material Characteristics Applications • Steel-Leadbronze-Compound with indents as reservoir for the grease • High load capacity, very good resistance to fatigue strength at higher temperatures • Applicable in rough operation conditions • Particularly suitable for high specific loads with oscillating motion and low frequency • Fine turned shafts suitable Industrial Mechanical handling and lifting equipment, hydraulic cylinders, agricultural equipment, off highway equipment etc. Composition & Structure Operating Conditions Availability Steel-leadbronze compound material St + CuPb10Sn10 with indents dry poor Ex Stock • N/A oiled good greased very good To order • Cylindrical bushes, thrust washers, strips and water poor non-standard parts process fluid poor Microsection Bearing Properties Unit Value Dry Maximum sliding speed v m/s - Maximum pv factor MPa x m/s - Coefficient of friction f – - Grease / Oil lubrication Maximum sliding speed v m/s 2.5 Maximum pv factor MPa x m/s 2.8 Coefficient of friction f, greased/oiled – 0.05-0.12 / 0.04-0.12 General Maximum temperature Tmax, greased/oiled °C +150 / +250 Minimum temperature Tmin °C -40 Maximum load p static MPa 300 Maximum load p dynamic MPa 140 Shaft surface finish Ra ìm 0.8 Shaft hardness - normal HB >200 Shaft hardness - for longer service life HB >350 Sliding layer Stannous, lead, bronze alloy group CuPb10Sn10 consists of approx. 80% Cu, 10% Pb, 10% Sn Steel backing