PBT EP22™ - GGB - #1

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EP22™ Bearing Material EP22™ is a trademark of GGB. ©2010 GGB. All rights reserved. www.ggbearings.com 03-10 EP22™ Bearing Material Characteristics Applications • Injection moulded polybutylenterephtalate based and modified bearing material • Good price/performance ratio • Rod stock for prototypes and small series production • Colour: white General Generally applicable within the limits of the material properties Industrial Domestic appliances, chemical equipment, office equipment, sports equipment and many more Composition & Structure Operating Conditions Availability Injection moulded thermoplastic dry bearing material PBT + PTFE dry good Ex Stock • Cylindrical bushes, flanged bushes and rod oiled good stock greased good To order • Non-standard parts water very good 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) 0.05 2) 0.10 3) 0.20 Coefficient of friction f – 0.22 - 0.37 Grease lubrication Maximum sliding speed v m/s - Maximum pv factor MPa x m/s - Coefficient of friction f – - General Maximum temperature Tmax °C +170 Minimum temperature Tmin °C -50 Maximum load p static MPa 50 Shaft surface finish Ra ìm 0.3±0.2 Shaft hardness HV >200 Injection moulded thermoplastic dry bearing material with additives homogeneously mixed in