Johnny SolidWorks
Hot Rolled
- Joined
- Apr 2, 2013
- Location
- Rochester
Good Morning Gang
I'm looking for some guidance (or maybe just a sanity check) on a really simple hydraulic system.
I've got a double acting cylinder (3" bore x 60" stroke) I need to power. Max cylinder pressure is 3000 PSI, but I'll never need it all. The only reason I'm using a hydraulic cylinder is because it's about the only thing readily available and cost effective in this stroke length that's still double acting. And the usage of this is going to be really minimal - think of it as a long-stroke positioning system, manually controlled.
To fully extend the cylinder will take ~1.84 gallons of fluid, so a 1.4 gpm hydraulic power unit will take ~1.3 min to fully extend this cylinder, correct? Or, since I'm not going to be anywhere near the pressure rating of the power unit, will it actuate faster?
Next up: I'm looking at a power unit (really needs to be single phase) that's rated for 2000 PSI and 1.4 gpm (2 HP) with a 5 gallon reservoir. I'm happy with the reservoir size (~3.6X the rated flow) and "Unit comes fully assembled with filler breather, fluid level gauge with thermometer, pressure gauge, relief valve, and a manifold block for mounting a valve. Fixed-clearance pump. Manifold is for direct pressure and tank (P&T) plumbing."
So if I put a 4 way manual control valve on the manifold block (called out as D03 - I'm guessing that's a standard valve mounting of some sort?) and run a hydraulic line to each end of the cylinder from the valve....that should be good - but I just have this feeling I'm forgetting something obvious. I'm looking for typical log splitter operation: push the handle forward, the ram extends. Let off, the handle springs to center and the ram holds. Pull the handle back, the ram retracts. Let off, the handle springs to center and the ram holds. That said, I do want the cylinder to hold position with the handle in the center position, even with the hydraulic power unit switched off, which means a closed center valve, correct?
Tell me how I'm stupid? (In relation to this, please.)
Thanks!
I'm looking for some guidance (or maybe just a sanity check) on a really simple hydraulic system.
I've got a double acting cylinder (3" bore x 60" stroke) I need to power. Max cylinder pressure is 3000 PSI, but I'll never need it all. The only reason I'm using a hydraulic cylinder is because it's about the only thing readily available and cost effective in this stroke length that's still double acting. And the usage of this is going to be really minimal - think of it as a long-stroke positioning system, manually controlled.
To fully extend the cylinder will take ~1.84 gallons of fluid, so a 1.4 gpm hydraulic power unit will take ~1.3 min to fully extend this cylinder, correct? Or, since I'm not going to be anywhere near the pressure rating of the power unit, will it actuate faster?
Next up: I'm looking at a power unit (really needs to be single phase) that's rated for 2000 PSI and 1.4 gpm (2 HP) with a 5 gallon reservoir. I'm happy with the reservoir size (~3.6X the rated flow) and "Unit comes fully assembled with filler breather, fluid level gauge with thermometer, pressure gauge, relief valve, and a manifold block for mounting a valve. Fixed-clearance pump. Manifold is for direct pressure and tank (P&T) plumbing."
So if I put a 4 way manual control valve on the manifold block (called out as D03 - I'm guessing that's a standard valve mounting of some sort?) and run a hydraulic line to each end of the cylinder from the valve....that should be good - but I just have this feeling I'm forgetting something obvious. I'm looking for typical log splitter operation: push the handle forward, the ram extends. Let off, the handle springs to center and the ram holds. Pull the handle back, the ram retracts. Let off, the handle springs to center and the ram holds. That said, I do want the cylinder to hold position with the handle in the center position, even with the hydraulic power unit switched off, which means a closed center valve, correct?
Tell me how I'm stupid? (In relation to this, please.)
Thanks!