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Southern Manufacturing

Farnborough, Hants(GU14 6TQ)

20/04/2021 - 22/04/2021

Southern Manufacturing and Electronics is the most comprehensive annual industrial exhibition in the (more)

PPMA Show 2021

NEC, Birmingham(B40 1NT)

28/09/2021 - 30/09/2021

PPMA Show 2021 will be the UK’s largest ever event dedicated to state-of-the-art processing and (more)

Advanced Engineering 2021

NEC Birmingham(B40 1NT)

03/11/2021 - 04/11/2021

Join us in our 12th and most important edition to date, as we invite engineers and management from all (more)

Flexible couplings cut vibration at grinding mill

Flexible couplings cut vibration at grinding mill Renold Hi-Tec Couplings has worked successfully with a mining company in Australia to reduce a problem it was experiencing with extreme vibration in the drive train of one of the biggest grinding mills in the world. The autogenous mill for grinding nickel ore is powered by two seven megawatt electric motors that drive a 9.6 metre diameter shell with a 12.1 metre diameter girth ring. The mill grinds the nickel ore within a rotating drum that propels material in a cascading motion causing impact breakage of larger rocks and compressive grinding of smaller particles. Renold Hi-Tec's engineers analysed the levels of vibration and recommended the use of two PM600 rubber-in-compression couplings with specially selected rubber blocks. The two couplings, located between two reduction gearboxes and the girth ring pinions, deliver 200kNm at a speed of 170rpm and have completely resolved the problem with vibration.

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