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Couplings for use in metal manufacture

Couplings for use in metal manufacture

Switching to rubber-in-compression couplings for application in metal manufacturing can cure the vibration and shock problems that cause machine damage, premature failure and increased costs.

Selecting rubber-in-compression couplings as a cure for vibration and shock loading on arduous applications in the metal manufacturing industries can not only cut maintenance and downtime but also reduce operating costs and extend the life of the machinery and equipment to which the couplings have been fitted.

Excessive vibration and massive shock loading are common problems on plant and equipment in metal manufacturing that can damage machinery, cause premature failure and significantly increase maintenance costs. Not only can it result in damage to the machinery being driven, but also damage to  the motor and the component parts of the power transmission system, leading to excessive and costly downtime.

One of the easiest and most cost-effective solutions to cure this problem is to fit rubber-in-compression type flexible couplings from Renold Hi-Tec.

The benefit of rubber-in-compression couplings is that there is no metal-to-metal contact and the drive is through pre-compressed rubber elements that damp vibration, eliminate backlash, and ensure that the natural frequency of the drive train does not coincide with the running speed.

They are comprised 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 engine, it drives the inner section through the rubber blocks. As this happens the rubber is compressed, and hence the term rubber-in-compression. They are maintenance free and the rubber blocks are usually good for a service life of at least ten years.

Typical applications for rubber-in-compression couplings in metal manufacturing include rolling mill drives, table roller drives, coilers, ladle cranes, piercers, pilgar mills, pickling lines and edger drives.

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