With the temp cooling down, I have noticed an increase in my hydraulic pressure. The gauge reads ~500 psi when cold and slowly drops as it warms up. It is normally under 200 when warm. Does anyone else have a gauge on their splitter, and can you share your pressure when cold?
Cold oil is thicker as it warms up it thins out and it flows better. that said. what pump do you have?
It is an 11 gpm pump. It has a 1.64 gpm high pressure side. That's how I run my splitter on a 3hp electric motor. It is all steel/cast iron. I know cold oil is thicker and will have more resistance. I was just curious if anyone else knew what their hot/cold pressure was.
I am using a 3500 rpm motor. It warms up pretty quick, 5-10 minutes, and you can watch the pressure drop as it warms up.
I do not have a gauge on mine, but I know enough about hydraulics to be dangerous. Are you reading the pressure while splitting, or idling (if an electric motor can do that)?
As the temp drops the viscosity will change related to the temp change. I don't have a pressure gauge on mine but the ram will move slightly more slowly until the oil starts warming up. Seals have operating temp ranges too. You can ruin seals outside of normal operating temps. I've had to replace seals and O-rings when operating temps of the oil got too high.
I have built six splitters with with various combinations of engine, pump, and cylinder all with gauges. When running in neutral the gauges rarely showed any pressure hot or cold. Pressure readings in neutral suggests to me that there is some restriction in the system.
