Friess GmbH
49 Articles found

Friess GmbH articles

A manufacturer of seed oils has the problem that the process water required for the production process is contaminated with oils at various points.

Sep. 29, 2025

A big manufacturer of packaging systems made of plastic uses 30 injection molding machines. The manufacturer of the injection molding machines recommends to change the hydraulic oil once per year although the machines are equipped with hydraulic filter systems. Because of the big oil volume 1000 l – 3000 l per injection molding machine the company decided to change the oil only once every four years.

Dec. 18, 2024

Acchieving Process Optimisation and Cost Reduction

The cooling water system at a steel rolling mill is heavily contaminated with tramp oil due to various oil leaks. Small amounts of oil and very viscous grease come from the lubrication of the roll bearings.

Dec. 18, 2024

Increasing the Service Life of Coolant by Removing Tramp Oil from Coolant Tanks

A large manufacturer of printing machines uses approximately 300 machine tools to produce their parts. Each of these machine tools has its own coolant tank and filter system.

Dec. 18, 2024

Optimisation of Cast Iron Machining using FRIESS Magnetic Filters

Casting iron parts are regularly machined at a production company. The chips produced in the process are flushed out of the machine by the cooling lubricant. Large chips sink to the bottom of the collection container and are transported away via a scraper belt conveyor. A large number of small chips and particles are pumped to blet filter while suspendended in the cooling lubricant. Larger chips

Dec. 18, 2024

A rectangular clarifier tank at a steel factory was equipped with an oil skimmer with a floating oil pick-up mop to remove oil and grease from the cooling water surface.

Dec. 18, 2024

A metal working plant had two rectangular settling tanks with a common wall between them in operation.  Every hour, 10 to 20 liters of oil become mixed with the constantly circulating cooling water. Because of the lower specific weight of the oil, it floated on the tank’s water surface. Since the accumulated oil was only removed periodically, the circulating pumps occasionally pumped cooling water mixed with oil through the cooling system. Even though the pump intake was about 2 me

Dec. 18, 2024

Aluminum profiles are produced on big hydraulic extruding presses. The production process starts with round aluminum material. The hot aluminum is pressed by a powerful hydraulic press through the tool. The necessary high force is generated by one single hydraulic cylinder. In order to drive the hydraulic cylinder normally several pumps, servo valves and a hydraulic tank with a volume between 10000 l and 40000 l of hydraulic oil is necessary. In order to achieve a constant quality of the prod

Dec. 18, 2024

A big European car manufacturer operates three factories for manufacturing gear boxes for passenger cars. One of the three factories in mid-Europe uses approx. 10,000 l hydraulic oil in different machines.  After three years of continuous operation, malfunction of hydraulic components rose continuously.

Dec. 18, 2024

The operator team of a big coolant separation system recognized after a longer period of operation that because of the higher content of oil in the delivered waste coolant, the oil content in the clean water is higher than desired.

Dec. 18, 2024