Hydraulic hose failures are often blamed on pressure spikes, defective components, or system issues. In reality, one of the most common causes of hose failure is much simpler: abrasion.
When a hydraulic hose repeatedly rubs against equipment, brackets, other hoses, or surrounding structures, the outer cover begins to wear away. At first this damage may appear minor—just a scuffed or flattened area on the hose. But once the protective cover is compromised, the integrity of the hose can quickly deteriorate.
Understanding how abrasion damages hoses and how to prevent it can significantly extend hose life and reduce costly downtime.
The Role of the Hose Cover
The outer cover of a hydraulic hose serves an important purpose beyond appearance. Its primary function is to protect the reinforcement layers inside the hose.
Most hydraulic hoses are constructed with several layers:
When abrasion removes or damages the outer cover, the reinforcement wires become exposed.
Once exposed, those wires are vulnerable to:
Over time, corrosion and mechanical damage weaken the reinforcement wires. When enough wires lose strength, the hose can rupture under normal operating pressure.
Common Causes of Abrasion
Abrasion damage typically develops slowly over time, often in areas where hoses are improperly routed or insufficiently secured.
Some common causes include:
Hose rubbing against equipment
If a hose is routed against a steel frame, bracket, or other hard surface, vibration during machine operation can gradually wear through the cover.
Hose-to-hose contact
Multiple hoses bundled together without proper separation can rub against each other as equipment moves.
Movement from vibration
Even small amounts of vibration can cause hoses to shift or move, creating repeated contact points.
Insufficient clamping or support
Unsupported hose runs are more likely to move and rub against surrounding components.
Warning Signs of Abrasion Damage
Abrasion damage can often be identified during routine inspections before it leads to failure.
Look for:
If the reinforcement layer is visible, the hose should typically be replaced. At that point the structural integrity of the hose has already been compromised.
Preventing Abrasion Failures
Fortunately, abrasion-related hose failures are among the easiest to prevent with proper installation and protection.
Proper Routing
Hoses should be routed to avoid contact with sharp edges, structural components, or other hoses whenever possible.
Keeping hoses clear of potential rubbing points is the first step in extending hose life.
Secure Hose Runs
Clamps and brackets should be used to secure long hose runs and prevent movement caused by vibration or equipment operation.
Properly secured hoses are less likely to shift and create abrasion points.
Use Protective Sleeves and Guards
In environments where contact cannot be avoided, protective products can dramatically increase hose life.
Common protection methods include:
These accessories act as a barrier between the hose and the surrounding environment.
Consider Abrasion-Resistant Hose Covers
Some hydraulic hoses are specifically designed with covers engineered to withstand severe abrasion.
For example, hoses with enhanced cover compounds, such as abrasion-resistant designs like Aeroquip’s Triple Crown “DURA-TUFF” cover, can provide significantly greater resistance to wear in demanding environments. For even greater abrasion resistant hoses Omni offers the Aeroquip Bruiser cover providing 700 times higher abrasion resistance than a standard hose cover.
Small Damage Can Lead to Big Failures
Abrasion may begin as a small cosmetic issue, but it rarely stays that way. Once the hose cover is compromised, the reinforcement layer can quickly degrade, eventually leading to leaks or sudden hose failure.
Regular inspection, proper routing, and the use of protective products can prevent abrasion damage and help ensure hydraulic systems operate safely and reliably.
In many cases, a small adjustment during installation or the addition of simple protective components can dramatically extend the service life of hydraulic hoses.