This article shows the steps needed to make a hose that is required to be changed after breakage and wear of the hose, with all the safety measures and in the most efficient way.
So that you do not misuse the pressing and the components, in the following image we can see an excess of pressing and throttling of the oil passage:
What is a whip?
A whip is a set of hose, terminals and bushings, pressed to form a hydraulic conductor that will allow us to connect the different components of our hydraulic system together. In this way, the oil will be able to reach each of the elements of our equipment.
How to replace a whip?
For the replacement of a hose, the first thing we must observe is the type of hose in front of us, for this we recommend reading Hynesur’s article on how to identify the size of a hose.
Once the hose is identified, we go to the bushings. Each hose must be crimped with a suitable gland for that type of hose. In this way we prevent the hose pressing fitting from escaping. There are several types of bushing and one of the main characteristics is the type of internal grooves. In pressing, the greater the number of meshes the hose has and the more pronounced those grooves, they will provide a greater grip and hold of the fitting. Thus preventing the hose fitting from escaping.
Press fitting, tips or terminals:
Now we have to identify the press fitting. For this we will have to use a professional or a magnificent tutorial on how to identify the rocks of the fittings and adapters that we will do soon. Press fittings consist of two parts. The spigot, which will be correlated with the internal size of the hose and the thread, which will allow us to fix the hose to the hydraulic elements in question that we need to join. All of this is delimited, either by the damaged hose, or by the flow rate.
Here we leave you a list of the bushings that each hose needs according to its function and size. In addition to the different models of press fittings that exist and can be used for the manufacture of hoses. Bushings and press fittings for the manufacture of hoses. If you require more information on press fitting, tips or terminals click here.
Now comes one of the most important and delicate parts, the pressing. Down below is a a pressing table which professionals use on a day to day basis.
Keep in mind that each manufacturer has a different table. It all depends on the manufacturing characteristics of the bushings and the hoses.
Crimping table for R1AT, R2AT, R1A, R2A, R9R or 4SP and 4SH hoses:
Crimping table for PTFE and Thermoplastic hose:
Avoid contamination produced by the whip
After pressing the hose, if you are not going to install it immediately or you need to move the hose to the place where its subsequent installation is, you must cover the two holes to prevent any type of dirt or residue from entering our hose.
Since all dirt that is inside it will pass into our hydraulic system and can damage the different elements including causing major breakdowns in pumps due to oil contamination.
Protections for the whip
In many cases, the hoses need extraordinary protections to avoid their external wear due to scratches or to protect them from inclement weather or temperatures. For this, the main types of protections are:
Springs: Which can be made of plastic or metal and protect the hose from friction produced by other mobile components of our hydraulic system or of the machinery itself.
Fiberglass and Ceramic Protection: This type of protection protects the hoses from high temperatures caused mainly by their proximity to areas that radiate heat by their very nature, such as motors.
To find out more information visit the Hynesur website today!