D R I E – D Lagertechniek bv DATA SHEETS

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DRIE-D Lagertechniek bv the right perspective Kiotoweg 120, 3047 BG, Rotterdam, NL telephone: (+31) 10 - 462 07 00 telefax: (+31) 10 - 462 07 07 E-mail: mail@drie-d.nl internet: www.drie-d.nl DATA SHEETS D-GLIDE DESCRIPTION D-GLIDE FC D-glide FC is a variety of D-glide F with which it shares the main mechanical properties. As all other D-glide qualities it is designed to be used without lubrication or any other kind of maintenance. D-glide FC has been developed to further reduce wear rates, especially in less than ideal circumstances. This includes many linear applications where the counter face conditions are not as well controlled as is usually the case in rotating motions. D-glide FC is even less sensitive than the other D-glide qualities to intrusion of foreign particles (for example sand or rust) in the contact surface. This gives the material a very constant long term behaviour; low wear rates and low and constant friction values, also in polluted environments. Applications include linear slides in hoisting equipment, drill floor tools, various slides on board dredging vessels, joints and hinges on board railway vehicles - amongst others in the brake systems - and even bottom plates of (formula) racing cars. In all of these applications D-glide FC outlasted the previously used materials by a factor 2 up to a factor 10 or more, all without lubrication. Lubrication is allowed and usually has no negative effects on the behaviour of the bearing. When used in abrasive circumstances some extra care is required in choosing the counter face material. Especially in rotating applications a minimum hardness of HB 220 is advised. For linear applications this is less critical but still an important design feature. The main properties of D-glide FC are summarised in the table below. Property Unit compressive strength (MPa) 350 shear strength (MPa) 105 stiffness under compression (MPa) 1600 density (10 3 kg/m 3 ) 1.35 water absorption, submerged (%) 0.3 coefficient of thermal expansion (10 -6 /°C) 50 chemical resistance (-) good colour (-) orange-pink maximum temperature (°C) 150 minimum temperature (°C)
DRIE-D Lagertechniek bv the right perspective Kiotoweg 120, 3047 BG, Rotterdam, NL telephone: (+31) 10 - 462 07 00 telefax: (+31) 10 - 462 07 07 E-mail: mail@drie-d.nl internet: www.drie-d.nl DATA SHEETS D-GLIDE DESCRIPTION D-GLIDE U D-glide U can be seen as an improved version of D-glide F. It shares the good running properties of D-glide F but thanks to the use of different fibres, the resistance against abrasive wear is even better. Also maximum strength and stiffness are slightly higher than of D-glide F. Creep is an unknown phenomenon for D-glide U. Perhaps the most significant improvement over D-glide F is the much higher allowable temperature, better temperature stability and the fact that properties hardly change with increasing temperatures. This makes D-glide U suitable for applications where in high ambient temperatures (over 100 °C) maintenance free bearings are required or for example in high-speed applications where the bearings have to run run dry for a certain amount of time. D-glide U is the only asbestos free plain bearing material that in potential and possible use comes close to or even surpasses the old asbestos materials. The abrasion resistance is better as is the dimensional stability because it does not absorb water. Typical applications for D-glide U are found in for example steel mills and other environments with high ambient temperatures and in heavily loaded pumps. D-glide U does not conduct electricity thus avoiding or at least reducing all kinds of corrosion problems. It is friendly for the counter face material however in high speed or abrasive circumstances a hardened counter face material is advised. Chemically D-glide U is virtually inert, only some concentrated acids or bases might affect the material. Water swell is negligible meaning that D-glide U can be used in almost all environments without precautions. The main properties of D-glide U are summarised in the table below. property unit compressive strength (MPa) 390 shear strength (MPa) 110 stiffness under compression (MPa) 2200 density (10 3 kg/m 3 ) 1.4 water absorption, submerged (%) 0.3 coefficient of thermal expansion (10 -6 /°C) 35 chemical resistance (-) good colour (-) light brown maximum temperature (°C) 250 minimum temperature (°C)
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D R I E – D Lagertechniek bv DATA SHEETS

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