PPS EP44™ - GGB - #1

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EP44™ Bearing Material EP44™ is a trademark of GGB. ©2010 GGB. All rights reserved. www.ggbearings.com 03-10 EP44™ Bearing Material Characteristics Applications • Injection moulded reinforced polyphenylensulfid based and modified bearing material • Good chemical and hydrolysis resistance • Excellent in lubricated applications • High dimensional stability • Colour: black General Generally applicable within the limits of the material properties Industrial Domestic appliances, valve technology, electronics assembly, apparatus engineering and many more Composition & Structure Operating Conditions Availability Injection moulded thermoplastic dry bearing material PPS + PTFE + Carbon fibres dry good Ex Stock • N/A To order • Bushes, special dimensions and shapes oiled good greased good water fair process fluid good after resistance testing Microsection Bearing Properties Unit Value Dry Maximum sliding speed v m/s 1.0 Maximum pv factor The pv Limit is depending on the heat dissipating surface to contact area ratio 1) AH/AC = 5 2) AH/AC = 10 3) AH/AC = 20 MPa x m/s 1) 0.11 2) 0.42 3) 1.69 Coefficient of friction f – 0.16 - 0.26 Grease lubrication Maximum sliding speed v m/s - Maximum pv factor MPa x m/s - Coefficient of friction f – - General Maximum temperature Tmax °C +240 Minimum temperature Tmin °C -40 Maximum load p static MPa 95 Shaft surface finish Ra ìm 0.5±0.3 Shaft hardness HV >450 Injection moulded thermoplastic dry bearing material with additives homogeneously mixed in