There are generally only two conditions which necessitate a hydraulic oil change. One of these is oxidative degradation. And the only way to know if the oil’s life has expired based on this condition is to do regular oil analysis.
A hydraulic oil’s oxidative condition is determined by an absolute measure of its total acid concentration. When oxygen combines with … Read more
When locating an air blast oil cooler on a machine, it should be situated so that it is at least half the fan diameter clear of any obstructions on both sides of the core. I recommend connecting the cooler so that oil flows from bottom to top, or if the tanks are on the sides, from lower connection (inlet) to … Read more
As a means of power transmission, hydraulics has many advantages. But overall efficiency is NOT one of them. A single-reduction gearbox has an efficiency of 98 to 99 percent, double-reduction 96 to 97 percent and triple-reduction 95 percent. And a chain drive in good condition has an efficiency of 97 to 98 percent.
A high-performance piston pump has an efficiency … Read more