The first lubrication-free tribo bearing for the fast mode with continuously high rotational speeds

Plain bearings made of the special material iglidur L500 ensure the quick, low-wear and low-noise continuous operation without lubrication. (Source: igus GmbH)

The new material iglidur L500 is suitable for, inter alia, fans and electric motors.

The Cologne-based igus GmbH has developed its range of plastics for continuously moving applications and is now presenting the iglidur material L500, a specialist for extremely high speeds. The iglidur L500 is a product of decades of research conducted by igus on lubricant and maintenance-free plastics and is of interest wherever continuously high speeds prevail, including electric motors and fans. With iglidur L500, the motion plastics expert igus has developed a new plain bearing material, which is ideally suited to continuous operation at high speeds and with low loads. It combines extraordinary properties in running and wear-resistance. Continuous rotational speeds of 5 m/s are possible. And it performs even under extreme environmental conditions, such as temperatures ranging from -100°C up to +250°C and media contact. The iglidur L500 is characterised by, among other things, its low moisture absorption and thermal expansion.

The dry-running, wear-resistant alternative to sintered bearings
A solution for applications with high speeds and low loads are often achieved through sintered bearings. For this reason they are often used in electric motors. Due to their structure, sintered bearings are more vulnerable to shocks and edge pressure than solid bearings. In addition, the oil impregnation limits the operating temperature range and is unsuitable for an absolutely dry running. Comparison tests with iglidur L500 and sintered bearings showed that the wear rates of sintered bearings were higher in all driven speeds, sometimes even up to more than five times. These positive material properties of the iglidur L500 allow the lubrication-free operation of electric motors, fans or ventilators, where sintered bearings were previously used. The standard range of RoHS-compliant plain bearings is available from stock from July. Moreover, the material is available from now on for the development and production of customer-specific geometries and bearing solutions.