HYDRAULIC HOSE REPAIR CHECKLIST

HYDRAULIC HOSE REPAIR CHECKS: WHAT TO LOOK FOR WHEN FIXING A HYDRAULIC HOSE

A hydraulic hose can blow or burt for a number of reasons… wear and tear, pressure wtc. However when replacing the hose and fitting new hose fittings, or even if using new connectors on a hose repair, we suggest you follow the following steps when undertaking the repair task.

  1. Always clean the area where fitting and hose connections meet. As we discussed previously, dirt and contamination should be kept out of the plant at all costs.
  2. If any adaptors are required, now is a good time to use. Replace with new if necessary and always adhere to the manufacturer’s specifications for the correct amount of torque..06---Ensure-Fittings-are-Correct
  3. Lay the hose assembly into routing position to verify the hydraulic hose length.
  4. Thread the hydraulic hose assembly onto the hose adaptor. It might require fitting the hose assembly directly to the hose fitting at this stage, if it aids in the ease of positioning the joint correctly. Without twisting the hose, thread the other end08---Fitting-Prior-To-Crimping.
  5. Properly torque both ends – again, subject to the hose manufacturers or hose distributors guidelines. Check the measurement with a calipers to see if the measurement is within the same guidelines.06---Checking-Connection-With-Calipers
  6. Inspect the hose for any leaks by running the plant or machinery for a duration of time. Check the contacts between the hydraulic hose fittings and the hose itself are good. Ensure that there is no air in the system – as it will impair performance and possibly damage the plant. Here you see the damaged hydraulic hose and the process of making the replacement hydraulic hose, with the first stage complete.

For more information on hydraulic hose repair and maintenance, contact Hydra Seals Hose and Bearings Limited. Hydra Seals are distributors of premium hydraulic hose and industrial Hose. Hydra Seals are distributors for O+P Swaging Machines. Check out some of the swaging machines for hydraulic hose repair, that we stock. Article written by George Annan.

fire retardant hydraulic hose

Fire Retardant Hydraulic Seals & Hose

Fire Retardant Hydraulic Seals & Hose

The ISO has identified and classified 4 types of hydraulic fluids. This article touches on the importance of using fire retardant hydraulic seals.

There are several water based hydraulic fluids and most of them are used in the oil, mining, gas and construction industries. Most of these environments are hazardous, due to the volatile nature of the material or materials being mined/drilled for. As a result, the ISO has classified and set guidelines for the use of fire retardant hydraulic hose & seals, and the use of such materials. They are known as HFC, HFAE, HFAS and HFB.

According to an article on they state the ISO classification as

  • “HFAE, which includes oil-in-water emulsions, typically with more than 80% water content;
  • HFAS, which are synthetic aqueous fluids, typically containing more than 80% water;
  • HFB, which are water-in-oil emulsions typically containing more than 40% water; and
  • HFC (also known as glycol solutions, polyalkylene glycol solutions, and water glycols), which include water polymer solutions, typically containing more than 35% water”

HFC fuilds are the most commonly used fire resistant fluids in the world. We have found a really good article over at hydraulicspheumatics.com, and they a have a printable pdf document for your reading pleasure. We really recommend you have a read.

Hydra Seals are stockists of not high quality hydraulic seals and oils seals, but also a wide range of hydraulic hose. If you require fire retardant seals or hose, please contact us first with the specification of your requirement, we may be able to help you. Contact us here or over the phone at +353 1 8612700.

Where are Industrial Seals Most Commonly used?

Top 8 Industries where Industrial Seals are most commonly used?

The main purpose of an industrial seal is to seal the opening between a static and rotating component. It is vital to use high performance seals for improving the efficiency of equipment. The following are 10 top industries which use hydraulic, pneumatic seals or a combination of both.

  1. Farm Machinery & Agricultural Plant

During agricultural harvesting seasons, agri-machinery needs to perform with optimal efficiency. Machinery used outdoors, such as ploughing equipment, tractors, harvesters etc, all face exposure to the weather elements, and with the Irish and UK climates consistent flooding, numerous storms and generally damp conditions, frequent contamination from the surroundings erode both hydraulic hose, hose fittings, bearings and other parts of the machiners. There is a constant need to repair and maintain farm equipment, the use of high performance seals, play an important role in productivity and lowering expenses. Farm implements use single acting hydraulic seals on harvesting, threshing, baling, drainage and on crop harvesting machinery.

  1. Amusement Machines

Amusment machines, such as roller costers and other attractions at funfares, including some of the rides at Tayto Park for example, would require hydraulic seals and other parts to keep running. Imagine how much would be lost if a major amusement ride broke down for a day. When the seal fails in the brake system, it can leak brake fluid, forcing a shutting down of the ride for repairs. Not to mention the cleanup afterwards.

  1. Auto Industry

Almost every vehicle assembly department uses pneumatic rams on assembly jigs. Engineers prefer pneumatics as they are quieter and cleaner, which can prevent any leakage from contaminating its surroundings. Sound absorbing materials such as polyurethane and rubber are effective in achieving significant compressed air savings.

  1. Cheese Manufacturers

Ireland has a long tradition for quality farming, and cheese making in itself is a niche of the agri-industry. There is also a trend to consume more homegrown / organic grubsteaks, and apart from the major dairys of the Mitchelstown Cheese Factory (Dairygold), there is a plethora of small businesses manufacturing in the niche, This machinery generally uses Pneumatic seals, spring energized seals, wipers and guide rings are used on manufacturing and packaging machines in the cheese industry.

  1. Coal Mining Equipment

Coal mining is still carried out in various parts of the world, and hydraulics are used extensively in the underground mining machinery, while pneumatics are used on roof support machinery. Essential to the mining industry is safety and the use of high performance parts to provide extraordinary service life so that downtime and maintenance is kept to a minimum.

  1. Concrete Pumping

Concrete pump designers face many challenges because concrete is heavy, viscous, abrasive, contains pieces of hard rock and solidifies if not kept moving. One of the causes of dangerous blockages can be attributed to improper setting up of the pump system, and requires specialised sealing and proper guide element replacement when the seals are replaced.

  1. Earth-Movers & Excavators

High performance oil seals and hydraulic seal kits are required for heavy earthmoving, excavators, dozers and backhoe loaders. The mining and construction industry is the heaviest user of high performance seals and reliable wiper seals.

8 Printers

Some may say printing is a dying trade, but with Newspapers and Printed books still in demand, and 4% of marketing budgets being pumped into traditional printed marketing, such as flyers and business cards, the demands of the fast-paced publishing industry benefits immensely from machine parts manufactured with high performance polyurethanes and rubber materials to allow for greater speeds and higher productivity.

hydraulic hose. Hydraulic hose accidents from improper installation and badly fitted hydraulic hose fittings

Hydraulic Hose Accidents

Hydraulic Hose Accidents & Safety Measures.

Hydraulic Hose can be found in many industries from construction, aviation and of course in vehicles. This also includes farm machinery, of which we are all too familiar with. However, when hydraulic hose breaks, bad hydraulic hose accidents can happen!

You may be wondering what types of accidents would happen? Well we’d like to start to explain what fluids pass through hoses, which provide fluid power to machinery. Such fluids would include petrol/diesel, water, oil, coolants or other fluid with some water base all flow through a hoses inner tube. Now all these fluids are running through at various temperatures, and are quite often are at high temperatures. How if a hose were to burst, or a fitting were to break off, the fluid inside would cause serious burning, or could contain a toxic fluid or gas as a bi-product of a chemical reaction happening inside the tube. What if the working environment contains heavy duty electrical equipment, the possibility of electric shock is quiet real.  All hose needs to be flexible. Flexible hose has the ability to bend around corners.

Why would there be Hydraulic Hose Accidents?

As we said in a previous articles, hydraulic hose accidents and failures arise when the equipment or material are worn, not fitted correctly or have some form of damage to them. In the case of Hydraulic Hose, we see that the hose is kinked or bent beyond it’s recommended radius, or the outer material has been damaged by an object or environmental wear has occurred.

Incorrectly made hose, by those unqualified or in a poor working environment, can be cause for a badly made fitting. It’s important to ensure the correct amount of pressure is used with the correct size die in the cutting/swaging machine used to make the hydraulic or water hose. Ensure the correct size fittings are used, and that the hose and fittings used are recommended by your manufacturer or distributor. It’s also important to ensure that if you are getting your hose made by an outsourced party to ensure that they are insured, and are qualified to make the required hose under some recognised standard. If you are making the hose in-house, make sure that your staff are trained and qualified to the same standards.

Methods to prevent Hydraulic Hose Accidents?

1. Observation. Examine the hose. If you believe the hose is kinked, twited, punctured or damaged in anyway, please look to replace.
2. Use High Quality Hose from the likes of Stomil, and don’t mix and match different grades or specifications of hose.
3. Make sure correctly sized fittings are used and made off properly in the swaging machines.
4. Replace all hose before the end of life period as it is made from a rubber compound, which degrades over time.
5. Used qualified / skilled personnel to make the hose!

About Hydra Seals Hose & Bearings Limited

Hydra Seals carry are wide range of Stomil Hose in 100m reels and also supply high quality fittings from Tieffe. We also carry a wide range of swaging machines to enable onsite/in-house hose repair services. Hydra Seals have a walk in trade counter where we will repair or replace old hose to same standards, and are open 6 days a week. Contact us via our contact page to get in touch with us.

hydra seals hose and bearings hydraulic hose repair service

Choosing Hydraulic Hose

Hydra Seals Hose and Bearings are a premium stockist of several types of hose, and in particular we specialise in Hydraulic Hose. We carry a full range of Stomil hydraulic hose. A premium quality hydraulic hose that’s manufactured in the EU and complies to relevant ISO standards.

industrial_hose

Why use Stomil Hydraulic Hose?

Hydraulic Hose has a limited life. It’s susceptible to heat damage and like all rubber and plastic products, they degrade over time. In a previous article, we discussed the reasons why Hydraulic Seals Degrade. Stomil hose complies with all relevant standards and stomil hydraulic hoses may be used for:

– hydraulic liquids in accordance with ISO 6743-4, except for HFD R,
HFD S, HFD T (temperature range from -40°C to +100°C),
– water solutions (temperature range from -40°C to +70°C),
– water (temperature range from 0°C to +70°C),
– compressed air (temperature range from 0°C to +80°C)

Hydraulic hose construction

Hydraulic hose provides a basic means for transporting fluid from one component to another. Hose has the flexibility to bend around corners and be cut to custom lengths and runs. Hydraulic hose is constructed of several layers, made up from Rubber, teflon (PTFE) and other thermoplastics. There’s also a reinforcement layer added to the hydraulic hose, in the form of a braided wire or other metal sheet.

The inner tube needs to be flexible to allow for bending around corners and objects, and the layers material composition must be compatible with the fluid that is passing. The outer layer must be able to connect with the environmental conditions, such as weather, heat, and abrasion-resistant etc. Several items affect the products lifespan, such as kinking or flexing of the hose past the minimum bend angles, twisting, crushing or continual abrasion of the hose, and mixing incompatible hose fittings beyond manufacturers recommendations.

Selecting the Proper Hydraulic Hose

To help determine the proper hose for an application, use the acronym STAMPED – from Size, Temperature, Application, Materials, Pressure, Ends, and Delivery. Here is what to consider in each area.

Size – In order to select the proper hose size for replacement, it is important to measure the inside and outside hose diameters exactly using a precision-engineered caliper, as well as the length of the hose.

Temperature – All hoses are rated with a maximum working temperature ranges. Get these from your manufacturer.
Application – Will the selected hose meet bend radius requirements? remember that exceeding this bend radius (using a radius smaller than recommended) is likely to damage or crack the hose reinforcement and therefore reduce hose life.

Materials – It is mandatory to consult a compatibility chart to check that the tube compound is compatible with the fluid used in the system.

Pressure capabilities – Hose working pressure must always be chosen so that it is greater than or equal to the maximum system pressure, including pressure spikes.

Hose Ends – The coupling-to-hose mechanical interface must be compatible with the hose selected. Hydra Seals have many different fittings. We generally stock Tieffe fittings for all hose types. Please check out our hydraulic hose and fittings sections here. Hydra Seals also carry a wide range of hose cutting/swaging machines – click here.

Delivery – Is the hose in stock and how soon can it be delivered. What lengths are the hoses delivered in and what’s the minimal order? Do you have to pay any import duties? Do you have to wait for clearance for certification from any stautory bodies? All of our hose meets all requirements and is ready on our shelves for next day delivery.

In House Hydraulic Hose Repair Service

hydra seals hose and bearings hydraulic hose repair service

Glenn making up a hydraulic hose

Expert Knowledge

When you place an order with Hydra Seals you can be sure you are getting expert advice on the parts you need. We have a team where the majority of our staff members have over 20 years experience in the agri spares and industrial machinery parts business and therefore business we have a great pool of knowledge to draw upon

Our team offer an fast hose repair service in Dublin. We have the ability to measure your existing hydraulic or fuel hose to match your old. We can hose crimp and any required fittings to the hose with our electric cutting and swaging machines. We also carry a wide range of hand tools from budget to high quality socket sets from Teng. We stock sealants, tread lock and a range of greases and lubricants as well has quality oil for farm machinery. We also carry Tieffe Hose Fittings range.

 

 

 

4 Reasons for Hydraulic Seal Failure

Four Common Errors with Hydraulic Equipment

1. Not changing the hydraulic oil

Oil should be changed at the end of its usable life. Oil breaks down over time, resulting the degradation of the oils base and the depletion of any additives in the oil. There are many variables that determine when this time comes, from frequency of use, operation temperature and the environment that the oil is running. With the prices of oil continually rising, replacing too soon is costly and leaving running in the engine too long can have a damaging effect on the engines parts. Simply replacing after a specific period of time is not enough. The only true measure of oil usability would be to do a proper analysis.

2. 6 Believing Hydraulic Components are Self-Lubricating

Dont assume that all hydraulic components are self-lubricating. You cannot afford the luxury to assume a part will self lubricate if it fails to do so. What happens if the part fails and the result is a complete system break down. Nasty! Hydraulic components can be seriously damaged. In some cases, they may work OK for a while, but the harm incurred at start-up then dooms them to premature failure. Just ensure you have replaced the fluids/oil.

3. Letting the Machinery Run Too Hot

Just like an engine, the fastest way to burn or wear hydraulic seals or components is to run the engine or equipment too hot. The same rings true for all types of hydraulic components, and is not limited to hydraulic seals, but other materials such as hydraulic hose and the hydraulic oil itself. So how do you know that the system is running too hot? This really depends on the viscosity of the hydraulic oil and the type of components in the system. As oil temperature increases, viscosity decreases, and falls below the adequate required lubrication for the hydraulic seals. Temperatures above 82 degrees (Celsius) will damage most hydraulic hose and hydraulic seal components, and advance the degradation of the hydraulic oil base. For these reasons, it is vital to monitor core temperatures.

4. Using the Wrong Hydraulic Oil

We would consider that oil is the most important component of any hydraulic system. Hydraulic oil is not only a lubricant but is also the means to transfer power though the system. This dual role makes viscosity the most important factor as it affects the machine performance and life.
Oil viscosity will determine the maximum and minimum starting oil temperatures. Is the machine starting up in an extreme cold environment or operating in an extremely hot environment. If you use unsuitable oil in either of these environments, hydraulic failure of components or engines can occur.
Also, within these tolerances of temperature, we also have to deal with the power loses when oil viscosity is reduced, which will lead to power loss or even failure from friction and internal oil / hydraulic fluid leakage. Using the wrong viscosity oil will result in increased power consumption (diesel or electrical).
Always consult the manufacturer of your equipment to use the correct oil as specified on the equipment manual.
Contact Hydra Seals Hose & Bearings Limited for any Hydraulic Hose & Fittings and Seal Requirements.