PA (Nylon) based EP™ - GGB - #1

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EP™ Bearing Material EP™ is a trademark of GGB. ©2009 GGB. All rights reserved. www.ggbearings.com 12-09 EP™ Bearing Material Characteristics Applications • Injection moulded reinforced polyamide 6.6T based and modified bearing material • Good bearing performance in the range of simple / medium working conditions • The EP™ standard programme is interchangeable with roll-formed bushes according to ISO3547 • Recommended tolerances for fitted bushes: housing h7, shaft h7 - h9 • Colour: black General Generally applicable within the limits of the material properties Industrial Medical equipment, awnings and blinds, scientific equipment, gaming equipment, office equipment, etc. Composition & Structure Operating Conditions Availability Injection moulded Thermoplastic Material PA6.6T + PTFE + glass fibres + graphite dry good Ex Stock • Cylindrical bushes and flanged bushes To order • Non-standard parts 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) 0.06 2) 0.24 3) 1.0 Coefficient of friction f – 0.15 - 0.30 Grease lubrication Maximum sliding speed v m/s - Maximum pv factor MPa x m/s - Coefficient of friction f – - General Maximum temperature Tmax °C +140 Minimum temperature Tmin °C -40 Maximum load p static MPa 80 Maximum load p dynamic MPa 40 Shaft surface finish Ra ìm 0.5±0.3 Shaft hardness HV >200 Injection moulded thermoplastic dry bearing material with additives homogeneously mixed in