Hi, I’m Pat Clark with Lifting Gear Hire Corporation.
Today, we’re going to be discussing our hydraulic cylinders and the accessories to
go along with them such as hydraulic hoses, gauges, and the pumps that power them.
For openers, based on your application requirements, you’re going to select the cylinder that
fits those needs.
We offer several different types of cylinders.
Starting with a single acting load return cylinder whereby you need a significant amount
of weight to retract it.
We also offer double-acting where we have one port that advances the cylinder, another
port that retracts the cylinder and we also offer our single-acting spring returns is
what we’re going to start off with.
Here we have spring returns single acting cylinders.
In order to utilize them, you have to use some sort of pump.
We offer a nice variety such as hand operated, gas operated and like you see here, electric
operated.
Permanently affixed on the cord is a reference material that shows the proper length and
gauge extension cord required.
In addition to that, under full load and running off 115 volts, these can draw yo to 20 amps.
Before moving on, we want to offer you some accessories that would allow your application
to run more smoothly and safely.
For example, if you’re looking to run more than one cylinder at a time, you should consider
using a manifold.
Also, we offer safety check valves when the valve is engaged and down, it allows oil to
the
flow into the cylinder but not back out.
And lastly, we should highly consider using a pressure gauge.
It simply provides a window
into your hydraulic system.
In a moment, we’ll show you how to properly hook the hoses up to the pump and the cylinder
assuming those connections are properly and all couplings are tight.
We want to show you some other basic functions of the pump.
Whether or not you’re using
a gas or electric pump, there’s a toggle switch on here that will power the motor on.
Regarding the value, the neutral position is in the center.
To advance the cylinder,
you would move it to your left.
To tract it, you would move it to your right.
Depending on the manufacturer of the pump,
the functions may vary.
In fact, if you’re using an Enerpac powered pump, they suggest to retract the cylinder,
make sure the valve is in the retraction position then switch the power pump off.
Regarding the hand pump, to use it properly and to start advancing, you have to make sure
that the value is in the secured, close position.
Once you have advanced it, and then you want to attract, open that valve up and the oil
will flow back into the pump itself.
It’s encouraged that before your application begins that you should assemble your entire
hydraulic system and test it thoroughly several times to make sure it’s running smoothly.
If you’re using a manifold for example, with the pump off, make sure that your needle
values are also in the closed position then turn your pump on, start advancing it, building
pressure then slightly open up your manifold valves.
Again, thoroughly run up and down your cylinders a few times to ensure they’re running smooth.
Moving on, let’s talk about our load return cylinders.
They still fall into the category of single-acting, so our earlier setup is identical.
The proper gauge extension cord is required at the same pump, hoses, manifold and now
you’re just using load return cylinders.
We’ll hook up the pump, turn it on, and start advancing it forward, building up some
pressure, and then we’ll start adjusting our manifold to give proper flow to each respective
cylinder.
So, one of the key components when using hydraulic cylinders is make sure that the unit the cylinders
are always lifting up level and the system is plumb.
This will prevent any side loading, any damage to the cylinders or the unit that you’re
attempting to lift.
A recommended rule of thumb is to go only 80% of the maximum allowed stroke for your
cylinder.
If you take a look at this load return cylinder, it has 2 lines as such.
The first is there’s a red warning indicator line on the side of the piston itself.
That’s telling you once you reach that is to stop all operations.
If you ignore that,
there’s a release valve on the side of the cylinder that will flow oil, telling you the
same thing.
If you ignore that, you could damage the equipment or worse suffer catastrophic failure to the
RAM.
Now to retract the cylinders, you simply repeat the process but in reverse.
Again as a reminder, these are load return cylinders.
You have to have a significant
amount of weight on them in order to retract the cylinders properly.
The last type of cylinder we’d like to offer as a demonstration on are our double acting
cylinders.
Meaning there’s two ports for operation.
First, the low port advances the cylinder while the upper portion will retract the cylinder.
The entire operational system is different from its single acting counterparts.
The pump is different, the number of hoses are different as well as the number of manifolds
as well.
There’s a manifold for advancing the cylinders and there’s a separate manifold to retract
the cylinders.
Regarding the operation of the pump, ensure that you have the proper electrical requirements.
Even though they’re very similar to the single acting, be sure to check the electrical
tag, permanently affixed to the pump.
So, there’s an advance manifold and retract manifold.
I’ve already taken the liberty
to hook up the hoses on the advance side.
Now, I want to give you a demonstration to
hook up the hoses on the retract side.
You grab the hose, remove the dust cap, and make sure it’s free of any dirt or other
debris.
If it’s not, make sure you grab a clean towel and wipe it down properly.
Take the male end of the hose and insert it into the female end of the coupling.
You’ll engage it and hand tight it only.
This is an area you do not want to use channel
locks.
We’re going to repeat the process with the hose in the retract port on the cylinder itself.
After it’s secured properly, we can begin the test the system before any operation begin.
We hope that you enjoyed this video and found it helpful.
In our rental fleet, our capacities ranges for our hydraulic cylinders are from five
all the way up to a thousand ton.
Pumps from forty-five cubic inches all the way up to
forty gallons and hydraulic hose in virtually any size.
For more questions regarding the hydraulic cylinders and other products we rent, give
us a call.
As a reminder, the contents in this video are for informational purposes only.
Please consult the manufacturer’s guidelines and use and care instructions before beginning.