LDD™ - GGB - #1

Text version of the page

LDD™ Bearing Material LDD™ is a trademark of Wieland-Werke AG, Germany. ©2010 GGB. All rights reserved. www.ggbearings.com 03-10 LDD™ Bearing Material Characteristics Applications • Wear resistant, perforated bronze bearing material with integrated seals for lubricated applications • Perforations act as reservoir for either grease or solid lubricant paste • Integrated seal lips to prevent ingress of foreign particles • The service life with initial lubrication is prolonged extremely • Optimum lubrication; first the bearing is lubricated, then the lubricant discharges from the sealing, the grease remains in the bearing • No additional installation space necessary • Suitable for use with all standard greases • Optimum performance under relatively high loads and low speeds Industrial Mechanical handling and lifting equipment, hydraulic cylinders, pneumatic equipment, medical equipment, textile machinery, agricultural equipment, etc. Composition & Structure Operating Conditions Availability Monometallic material CuSn8 with grease reservoirs + seal lips for optimum long term lubrication dry not suitable Ex Stock • N/A oiled fair greased good To order • Cylindrical bushes and non-standard parts water poor 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 lubrication Maximum sliding speed v m/s 2.5 Maximum pv factor MPa x m/s 2.8 Coefficient of friction f – 0.06-0.15 General Maximum temperature Tmax °C +150 Minimum temperature Tmin °C -40 Maximum load p static MPa 120 Maximum load p dynamic MPa 40 Shaft surface finish Ra ìm 0.8 Shaft hardness - normal HB >200 Shaft hardness - for longer service life HB >350 CuSn 8: 8 % Sn <0.05% P Rest Cu