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Webinar: Liquid handling Event by Festo UK & Ireland

On-line webinar


How pressure-over-liquid provides precise, accurate and cost-effective throughput Precise and accurate (more)

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)

Hydraulic sealing systems compared

Hydraulic sealing systems compared Cycle times are an efficiency factor for injection moulding machines. This explains why the cylinders that open and close injection moulding machines are subjected to such stress. Leakages in these hydraulic systems are totally unacceptable. Ferromatik Milacron, a renowned manufacturer of injection moulding machines, equipped one of its high-performance injection moulding machines (a K-Tec) with two different hydraulic sealing systems (each from a leading supplier of seals) with a view to comparing the two systems directly. In order to ensure that the sealing systems were subjected to exactly the same loads, one of the machine's driving cylinders was equipped with the sealing system from one manufacturer, and the other driving cylinder with the sealing system supplied by the second manufacturer. The leakage oil from each cylinder was collected separately. After 139 operating hours (101,000 cycles), one of the cylinders showed first signs of leakage. After 665 operating hours (470,500 cycles), one litre of leakage oil had been collected at this cylinder. After approximately 1,150 operating hours (800,000 cycles) the volume of collected leakage oil at this cylinder had risen to an unacceptable 3 litres. The sealing system that was used on the other cylinder and was subjected to exactly the same load was supplied by Merkel Freudenberg Fluidtechnic. By this stage of the test, it had not leaked a single drop of oil.

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