Home > Steel rope lifespan extended in host of industrial equipment with engineered plastic sheaves

Steel rope lifespan extended in host of industrial equipment with engineered plastic sheaves

Supplier News
article image Sheaves made from Wearlon engineered plastics prevent wear on steel wire ropes thanks to their elasticity

Cut to Size Plastics presents an internationally proven range of hard-wearing cast polyamide engineering plastics from its Wearlon family, formulated to reduce wear and maintenance and enhance safety in a wide range of machinery and industrial equipment.

LiNNOTAM cast polyamides from international manufacturer and fabricator of engineering plastics Licharz are part of the Wearlon range of engineered plastics suitable for OEM use and metal replacement in applications involving transmission of mechanical force and minimising friction. The Wearlon range of engineered plastics benefits a wide range of applications including cranes and lifting equipment, materials handling machinery such as conveyors as well as fixed and mobile plant extending from mineral processing equipment and power generation technology through to mining draglines, heavy transport, implements, construction equipment, food processing equipment, and primary product processing equipment for timber and paper.

Available in various grades for different purposes, Wearlon LiNNOTAM metal-replacement materials not only offer a long service life but can also be easily machined to custom-fabricated shapes. Cut to Size manufactures components such as sheaves, rollers, gears and wear components for applications across Australasia at its Sydney head office, which is equipped with CNC machining facilities coupled with GibbsCAM and Solidworks software.

Cut to Size NSW Manager Mr Pat Flood explains that steel wire ropes are important and highly stressed machine elements in force transmission and conveying technology with large plants relying on their performance not only for efficiency but also safety. Wearlon can extend their lifespan and enhance safety by reducing maintenance and preserving structural integrity for longer.

Wearlon engineering plastics offer several benefits including rope-conserving elasticity; compression fatigue strength; high wear resistance; toughness also at low temperatures; resistance to lubricants; and high resistance to weathering effects.

According to Mr Flood, wire ropes are stressed by fluctuating forces, wear, corrosion and extreme forces. Ropes that run over sheaves made from metallic materials are subject to high stress due to the surface pressure occurring between the rope and the groove. When the rope rolls over the sheave, only the outer strands lie on the groove, resulting in wear in the form of individual strands breaking or, more serious rope breakage.

However, sheaves made from Wearlon engineered plastics prevent wear on steel wire ropes thanks to their elasticity. The pressure between the rope and the roller in the combination steel rope/polyamide roller is around 1:10 compared to steel rope/steel roller, which can be attributed to the visco-elastic behaviour of polyamide. It is not just the outer strands that lie in the groove, but almost the whole projected strand width, reducing surface pressure between the rope and the roller and considerably extending the life of the rope.

The cast polyamides of the LiNNOTAM members of the Wearlon family can be produced as semi-finished products or near net shape components and are virtually free of internal stress. Cut to Size offers a large selection of shapes, weights and dimensions.

Newsletter sign-up

The latest products and news delivered to your inbox