Blog - Hose & Fittings, Etc.

Which is the Best Way to Protect Hydraulic Hoses Against Abrasion?

Posted on Tue, Nov 28, 2017 @ 10:52 AM

According to Fluid Power Journal article, "Industry and user experience agree 70% of [hydraulic hose] failures are a direct result of abrasion or external damage—yet many could be prevented."

Hose assemblies that are exposed to regular cycles of heavy friction must be closely monitored for abrasion damage to prevent equipment failure and protect the safety of your workers. Many over-the-sheave applications, such as forklifts, cranes and scissor lifts, need specialized hose shields and covers to protect the hose from abrasion damage. A variety of abrasion resistance solutions are available through Parker to suit specific needs based on the application and work environment. These solutions include abrasion sleeves, protection shields, spiral hose guards and the built-in abrasion resistant hose covers in Parker’s ToughCover, SuperTough and ToughJacket series.

Abrasion Sleeves

Abrasion sleeves include products such as Parker’s Partek, a lightweight urethane-coated nylon sleeve designed for abrasion resistance and for bundling hose assemblies together. Partek’s unique tubular weave construction allows for the hose to move freely within the sleeve’s exceptionally smooth walls, preventing internal abrasion issues. Partek is available in two versions - Partek “AS”, which is strong enough to withstand over 200,000 abrasion cycles without damage or failure, and Partek “PS”, which can withstand more than 50,000 abrasion cycles. Partek has the advantage of being able to be installed post-assembly, meaning that you can add this product after determining the level of abrasion resistance that your existing hose assembly will need.

Hose Shields

For more pinpointed abrasion protection, hose shields provide a low-cost solution for small sections of hose that come into contact with abrasive conditions. The plastic shields are connected with cable ties for easy assembly that does not require disconnecting or removing the hose prior to installation. Hose shields are available in 4, 6 and 8 inch lengths for hose I.D.s of ¼ to 2 inches. Hose shields are not recommended for applications that experience heavy abrasion, particularly if more than just a small segment of the hose assembly is exposed to frequent friction.

Spring Guards & Armor Guards

Parker Spring and Armor Guards can prolong the life of hose assemblies that are exposed to rugged, abrasive conditions. These protective spiral guards are available in a variety of materials and configurations, including clear vinyl, black vinyl, and flat steel. In addition to their abrasion resistant properties, Spring and Armor Guards also prevent hose kinking and provide anti-crush protection.

Parker also offers several polymer spiral wraps that can be added to an existing hose assembly, including the NEXWRAP chafe guard, ParKoil spiral wrap and the PolyGuard heavy-duty hose protector. NEXWRAP can be used to bundle hose, tubing, cables and wiring, protecting the lines from exposure to abrasion. The open spiral design allows for parts of the bundle to be removed without the need to shut down equipment first, preventing downtime. Similarly, the ParKoil polymer spiral wrap can be used to bundle equipment and provides a low-cost solution for abrasion resistance in less-demanding applications. Finally, PolyGuard’s rugged polyethylene cover provides superior abrasion protection and is ideal for bundling high-pressure hose lines.

Abrasion Resistant Hose Covers

For the most demanding applications, built-in abrasion resistant hose covers provide the highest levels of protection. Parker offers multiple hoses in their ToughCover, SuperTough and ToughJacket series – you can find more information on each of these hoses on our new Abrasion Resistant Hose selection page. ToughCover is constructed from synthetic rubber and is 80 times more abrasion resistant when compared to Parker’s Standard rubber cover, SuperTough provides 450 times more resistance, and the ToughJacket series is 650 times more durable and abrasion resistant when compared to standard rubber hose cover.

Which abrasion-resistant hose protection should you choose? The answer depends greatly on your equipment’s specific needs and how much friction the hose assemblies will encounter. For example, in boom and cable track applications, the 563TJ hose is ideal due to its low length change characteristics. The majority of hoses shrink at least 2% in a constricted environment, which can be disastrous in booms and cable tracks as this shrinkage must be prepared for to prevent hoses from pulling out of fittings.

Equipment with over-the-sheave hose assemblies can benefit greatly by selecting a tough cover hose. Forklifts, scissor lifts, bucket lift trucks and reach stackers are just a few industrial applications where hose assemblies encounter numerous cycles of abrasive friction.

Available space can also be a major factor to consider when selecting abrasion protection for your equipment. In tight, constricted spaces or in applications where adding extra weight is a concern, using a hose sleeve or guard may not be practical. Abrasion resistant tough covers can reduce the overall assembly weight and their flexibility allows routing through tight spaces. Alternately, hose guards and wraps may be used if the friction encountered is relatively minor and protection needs to be added to an existing assembly.

The Verdict

Built-In Abrasion Resistance Is Best For:

  • Tight spaces where there is not much room for a hose sleeve or guard
  • Hose assemblies that need to be as lightweight and compact as possible
  • Environments and applications that need the most rugged abrasion protection available

Hose Sleeves/Hose Guards Are Best For:

  • Less extreme abrasion where you can save money by using a hose sleeve/guard
  • Applications where there are only one or a few points of heavy abrasion that need to be protected
  • Hose assemblies where you may need to remove the abrasion resistant hose guard/sleeve, or want to add it to an existing assembly
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Tags: maintenance, safety

New: Parker's EO-3® Flareless Fitting Visually Confirms Completed Tube Assembly

Posted on Thu, Sep 28, 2017 @ 11:33 AM

Factors like fluctuating or inexperienced personnel, shortage of skilled workers and increasingly difficult installation conditions can lead to tube assemblies being incorrectly installed. The results are leaks, costly downtime and inefficiency, as well as increased safety risks. Driven by the customer desire for simplified fitting technology, Parker developed the innovativeEO-3® flareless fitting system. Utilizing a special tapered thread and visual status recognition, it speeds tube assembly and improves assembly accuracy.

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Tags: product update, news, technical

New OSHA Regulations Regarding Occupational Exposure to RCS

Posted on Mon, Aug 28, 2017 @ 03:58 PM

The U.S. Occupational Health and Safety Administration (OSHA) has created a new standard to address the problem of crystalline silica dust control associated with pneumatic jackhammer and breaker operation in the construction industry. The mandated compliance date of the new silica rule has been postponed to September 23, 2017.

In reaction to this new rule, Parker has developed the 7084 Series Twinhammer™, an air-water jackhammer hose which helps companies comply with OSHA's crystalline silica dust control guidelines. Unlike other silica dust suppression systems, Twinhammer™ assemblies are constructed as a unitized, low-maintenance solution that can be easily integrated into construction applications affected by this rule.

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Tags: product update, news, safety

Parker P1D Cylinders Improve Pneumatic System Safety [During Power Outage]

Posted on Tue, Jul 11, 2017 @ 11:00 AM

In many automated manufacturing applications, assessing potential safety risks posed by unexpected power failure is an essential part of overall system design. You need to take appropriate measures in order to reduce the risk of injury to machinery operators and other personnel, and prevent damage to the products being assembled. In the case of any kind of unexpected interruption in operation, the equipment must meet safety standards that prevent unsafe situations from occurring.

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Tags: technical, safety

Parker 301LT & 772LT Hoses Discontinued [Use 472LT & 772LT Instead]

Posted on Wed, Jun 21, 2017 @ 02:05 PM

The Parker Hose Products Division announced yesterday that it will discontinue production of its 301LT and 772LT low temperature hoses.

DISCONTINUED

301LT Low Temperature Hose

DISCONTINUED

722LT Low Temperature Hose

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Tags: product update, news

Parker is Upgrading Seven Hoses to Meet MSHA IC-40/41

Posted on Thu, May 18, 2017 @ 11:00 AM

Parker Fluid Connector Group has announced a running change to the rubber cover compound of the following Parker hoses:

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Tags: product update, news

NEW: Seals for High Temperature Applications

Posted on Thu, Apr 27, 2017 @ 10:56 AM

If your hydraulic equipment is exposed to spikes of high temperatures, industry standard thermoplastic polyurethanes, or TPUs, may fail you.

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Tags: maintenance, news

Parker 77 Series Crimp Fittings Now Available in Stainless Steel & Dimensional Change in Elbow Configurations

Posted on Tue, Mar 21, 2017 @ 12:35 PM

In a previous blog, we wrote about the GlobalCore series of hose from Parker, which can streamline your hose and fittings inventory and provides a high-quality, robust standard for hydraulic hose in the most common pressure ranges. GlobalCore series hoses use the 77 series fittings from sizes -8 through -32, which are available in a wide variety of styles and configurations, but had previously only been manufactured in carbon steel. Parker is excited to announce the introduction of stainless steel 77 series fittings, the ideal choice for highly caustic or corrosive applications and environments.

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Tags: product update, news

Converting Parker Legacy 2H/3H Hydraulic Cylinders to Gen II Cylinders

Posted on Tue, Feb 21, 2017 @ 10:50 PM

Last year, Parker introduced the Gen II style hydraulic cylinders, which replace the legacy 2H and 3H series. This change brought many improvements to the cylinders' delivery times and longevity. So how do you convert your old part numbers to the Gen II cylinder part numbers? The short answer is that Parker already did the work for you - for the most part.

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Tags: product update, technical

Reducing Compressed Air Consumption in Blow Applications

Posted on Tue, Jan 24, 2017 @ 11:28 AM

Anyone running a pneumatic system knows that producing compressed air requires a lot of energy. In a typical pneumatic plant, 20 percent or more of the plant’s energy is consumed by an air compressor. As quoted in this MRO article, “Based on energy audits conducted by the U.S. Department of Energy, more than 95 percent of compressed air systems present opportunities for saving energy."

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Tags: product update