Stepped hydraulic feeder line
Stepped hydraulic feeder line
(OP)
Howdy all,
First, I'm not a hydraulic guy, I'm a machine design guy.
I have a hydraulic system with one main line feeding several hydrodynamic bearings. The bearings have some continuous flow and are controlled leaks. Currently all lines are the same dia. I believe that as I progress from the pump I'm losing pressure after each node and would like each bearing to get the same pressure and the same flow.
In an effort to remedy this, has anybody ever tried a stepped oiling system?
In the HVAC systems and Foundry gating systems that I'm familiar with it is important to have one large runner w/ several gates coming off it. The runner starts out relatively large and gets smaller by the CSA of ea gate. This keeps the pressure the same at each gate.
These are relatively low pressure systems.
I have 5 bearings and each require 5/16" dia lines.
I'm envisioning a system like this:
Leaves the pump w/ 1.25" dia line, (5x the CSA of a 5/16 line) tapping into one bearing, continuing with about an .875" line (4x the csa) down the last bearing and last runner w/ a 5/16" line.
Running about 20psi pressure w/ 30wt oil @ 190F.
Jason.
First, I'm not a hydraulic guy, I'm a machine design guy.
I have a hydraulic system with one main line feeding several hydrodynamic bearings. The bearings have some continuous flow and are controlled leaks. Currently all lines are the same dia. I believe that as I progress from the pump I'm losing pressure after each node and would like each bearing to get the same pressure and the same flow.
In an effort to remedy this, has anybody ever tried a stepped oiling system?
In the HVAC systems and Foundry gating systems that I'm familiar with it is important to have one large runner w/ several gates coming off it. The runner starts out relatively large and gets smaller by the CSA of ea gate. This keeps the pressure the same at each gate.
These are relatively low pressure systems.
I have 5 bearings and each require 5/16" dia lines.
I'm envisioning a system like this:
Leaves the pump w/ 1.25" dia line, (5x the CSA of a 5/16 line) tapping into one bearing, continuing with about an .875" line (4x the csa) down the last bearing and last runner w/ a 5/16" line.
Running about 20psi pressure w/ 30wt oil @ 190F.
Jason.





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