Water instead of hydraulic oil in the veins of our machines makes them much cheaper and more efficient.
What isn't there doesn't cost anything. Conventional oil hydraulic presses have double-acting cylinders and four-way valves. Our cylinders are single-acting and a two-way valve is sufficient for control. The return stroke is carried out by a suction valve. More information in the chapter: Cylinders, pistons, valves ....... The press is made of structural steel. Only what comes into contact with water is rust-proof and thanks to our special cylinder tubes, the proportion of rust-proof steel is low and hardly has any impact on the price. A significant advantage is the drive via high-pressure cleaners. High-pressure cleaners are mass-produced and cost noticeably less than oil hydraulics with the same performance.
Example of a cylinder tube from our production.
Now to the high-pressure cleaners
High-pressure cleaners have pressures like oil-hydraulic pumps. They are very reliable and run in car washes around the clock and for years. High-pressure cleaners are mass-produced and are produced inexpensively in corresponding quantities. Oil hydraulics can only dream of such quantities. So we already have a drive that is cheaper than oil-hydraulic pedants. When you hear the word high-pressure cleaner, you unconsciously think of high water consumption. With a few exceptions, high-pressure cleaners are self-priming and even better than oil-hydraulic pumps and, like oil hydraulics, can run in a closed circuit. The original purpose remains the same.
Now to the remaining components such as valves, storage tanks and pressure hoses
Due to the thinness of the water, the flow cross-sections in the valves and hoses can be much smaller than usual with oil hydraulics and therefore cost less. The storage tank for clear water hydraulics can be a plastic container from the hardware store, oil hydraulics are much more demanding and steel containers are mainly used there. In addition, the oil must be finely filtered for oil hydraulics, but not for clear water hydraulics, because foreign bodies do not remain suspended but immediately sink to the bottom or float to the top. Oil hydraulic presses for art and knife smiths have double-acting cylinders and therefore need four-way valves. Our presses have single-acting cylinders and a two-way valve is sufficient for control. with suction nozzle for the piston return stroke.
Energy efficiency
In general, clear water hydraulics require 20% less energy than oil hydraulics. This is easy to understand because a guideline says that water is 20 times thinner than oil and can therefore be pumped with less resistance.
Not to forget the cost of hydraulic oil, the cost of oil changes and the cost of disposal and:
In addition, you have complete fire protection. There is no need for additional sheathing for hydraulic hoses for water, because if a hose bursts, it will not pose a fire hazard in the forge. Hydraulic hoses also have an expiration date. Hoses for water hydraulics, however, do not. In earthmoving machines, all hoses must be replaced after 6 years, even if they are still in good condition.