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2020 / 2021 Edition

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Free coupling guide for mine and quarry engineers

Renold Coupling guide

Renold Hi-Tec Couplings publish first PDF guide in newly launched series of Info.Base publications

RENOLD Hi-Tec Couplings have published a free PDF guide on the use of rubber-in-compression couplings in a wide range of mining and quarrying applications. The guide is the first in a newly launched series of Info.Base publications designed to assist engineers with many of the day-to-day issues associated with power transmission systems on industrial plant, equipment and machinery.

The Info.Base guides share Renold’s specialist engineering knowledge and expertise on couplings and gears, and include useful and practical ‘how to’ style tips and informative application-based content.

The first of the new Info.Base guides, titled ‘Coupling Solutions: Rubber-in-Compression’, addresses issues such as backlash, extreme vibration, safety, reliability, how to cut maintenance, and how to reduce lifetime operating costs in mines and quarries. It explains the common causes of a wide range of problems, such as torque amplification and motor hunting on inclined conveyors, then shows how rubber-in-compression couplings can provide the solution.

Rubber-in-compression couplings consist of two round metal sections fitting one inside the other with what looks like the paddles of a paddle steamer projecting inwards from the outer section and outwards from the inner. Rubber blocks are placed in the spaces in between the paddles, and, as the outer section is turned by the motor, it drives the inner section through the rubber blocks. As this happens the rubber is compressed, hence the term ‘rubber-in-compression’.

When rubber is loaded in compression it behaves as an incompressible fluid and is inherently strong and robust. Rubber-in-compression couplings are intrinsically fail-safe because even in unlikely event of the rubber blocks being destroyed, the strong metal paddles would come together to provide the drive.

To obtain a free copy of ‘Coupling Solutions: Rubber-in-Compression’ and to subscribe to future issues of Renold Info.Base publications for mining and quarrying engineers, contact Renold by email via this link: www.renold.com/infobase

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