MATERIALS The rolled sheet form of Wieland
L66 is ideally suited for bending processes that facilitate large- scale production. This method enables efficient handling and consistent quality control, resulting in slightly enhanced mechanical properties. Sliding bearing bushes manufactured from Wieland L66 are perfectly suited for high-volume applications in engines that require robust performance under extreme combustion pressures. The economical production process ensures that customers benefit from both high quality and cost-effectiveness at scale. Wieland L67 is produced from an
extruded tube, allowing for subsequent cutting and precision machining. This process offers maximum geometric freedom, enabling the creation of highly complex oil grooves and intricate features. The ability to machine Wieland L67 to exact specifications makes it the material of choice for exclusive applications and premium engine designs. When intricate geometries are required, Wieland’s advanced machining capabilities deliver sliding bearing bushes that precisely meet these specialised demands—even when production volumes are lower. This versatility underlines the strength of Wieland L67 in delivering bespoke, high-performance solutions.
FRICTION PERFORMANCE A key performance metric for sliding bearings is the friction coefficient. Both Wieland L66 and Wieland L67 exhibit friction values slightly below 0.1, which is notably competitive
Wieland L66 – Strip material before wrapping
among high-performance bearings. In many conventional systems, friction values tend to hover around or just above 0.1. Therefore, the lower friction values of Wieland’s alloys contribute significantly to reduced wear and lower energy losses during engine operation. This reduction in friction not only improves overall efficiency but also extends the service life of the sliding bearings—vital for engines operating under severe conditions.
ADVANTAGES AND APPLICATIONS The exceptional performance of Wieland L66 and Wieland L67 in sliding bearing applications is the result of a comprehensive approach that integrates advanced material science with optimised production techniques. The monometallic nature of these alloys means that as the surface layer wears over time, a new layer with identical properties is immediately available. This ensures that sliding bearing bushes maintain their high structural integrity
L67 (left, seamless) and Wieland L66 (right, joint)
throughout the product lifecycle. Both Wieland L66 and Wieland L67
are engineered for high-performance internal combustion engines—whether diesel or gasoline. Their advanced mechanical strength and excellent wear resistance allow these sliding bearing bushes to operate reliably under the severe conditions imposed by modern engines. Wieland’s products are trusted by leading global Tier 1 suppliers and OEMs, which further validates the long-term reliability and quality of the company’s solutions. Wieland takes immense pride in
its Made-in-Germany approach, combining time-honoured engineering expertise with cutting- edge technology. Its German production facilities not only deliver consistent quality but also ensure that components meet the rigorous demands of modern combustion engines, durably and reliably. Wieland’s advanced CuNi6Sn6
alloys, Wieland L66 and Wieland L67, represent a evolution in sliding bearing technology. By harnessing the benefits of controlled spinodal decomposition and leveraging unique production routes – from high-volume bending of Wieland L66 to bespoke extrusion and precision machining of Wieland L67 – the company delivers slide bearing solutions with exceptional mechanical properties and tribological performance.
Dr Joachim Fischer holds the role of technical marketing engineered products at Wieland:
www.wieland.com/en/products/ slide-bearings
www.engineerlive.com 19
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44
