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Charlotte Stonestreet
Managing Editor |
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Couplings cut vibration
09 June 2015
Shock loading, vibration and torque amplification are common operating conditions for table rollers in steel mills and the driveline must be designed to withstand this. When a shock load occurs, such as when a billet of steel hits the rolls the impact passes down the drive train transmitting the torque to the driving motor.
Fitting rubber-in-compression couplings from Renold Hi-Tec cures this problem as 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.
Rubber-in-compression type flexible couplings are comprised of two round, metal sections fitting one inside the other with what looks a bit like paddles projecting inwards from the outer section and outwards from the inner.
