Technical Criteria for Hydraulic Hose Selection | Pressure and Standards – Hidroman
Technical Criteria for Hydraulic Hose Selection | Pressure and Standards – Hidroman
Technical Criteria for Hydraulic Hose Selection
Pressure Calculation, Flow Dynamics and Standards-Based Engineering Approach
Although the choice of hydraulic hose is considered as a simple product choice in most projects, it is actually an engineering decision that directly affects the safety of the hydraulic system. Wrong hose selection; It can result in pressure fluctuations, thermal losses, premature fatigue and sudden hose bursts in the system.
For this reason, hose selection at Hidroman is made through system analysis, not product catalog. The basic principles of this technical approach are explained in detail in our main content, where we discuss the selection of hydraulic hoses and hydraulic hose types in detail. (For the main guide: You can review our Hydraulic Hose Selection and Hydraulic Hose Types page.)
Correct Reading of the Concept of Pressure in Hydraulic Hose Selection
The most common mistake in choosing a hydraulic hose is to look only at the rated working pressure. However, in systems:
Pressure spikes occur due to sudden loads, valve closures, cold starts.
Technical Rule
The hose should be selected with a safety margin above it, not below the maximum peak pressure of the system.
For this reason, hoses in EN and SAE standards:
Working pressure
Burst pressure
It is classified by the safety coefficient (mostly 4:1). This classification forms the technical basis of the types of hydraulic hoses, which are detailed in our main article.
Flow Rate – Inner Diameter Relationship and Energy Loss
The hydraulic hose inner diameter is critical not only for connection compatibility but also because it determines the speed regime of the fluid.
Wrong inner diameter selection:
Increased turbulence
Warm-up
Decrease in pump efficiency
It creates premature wear on the inner surface of the hose.
Recommended Flow Rates
Pressure lines: 4 – 6 m/s
Return lines: 2 – 3 m/s
Suction lines: < 1.5 m/s
These values support the engineering background of the hydraulic hose selection criteria described in the main guide.
Impact of Hose Reinforcement Structure on System Dynamics
The reinforcement structure used in hydraulic hoses affects not only pressure but also fatigue life.
Braided Wire
More flexible structure
Medium pressure
Smaller bending radius
Spiral Wire (Spiral Wound)
High pressure
High impulse strength
Heavy industry and mobile machinery
The varieties of 2K, Harvester, spiral hoses, classified in the main content, were created according to these technical requirements.
Temperature – Elastomer Aging Relationship
In hydraulic systems, most failures are caused by ignoring temperature.
As the oil temperature rises, the elastomer hardness decreases
At low temperatures, hose flexibility decreases
This makes it necessary to choose the right series, especially among the hydraulic hose types mentioned in the main article.
Dynamic Applications and Minimum Bend Radius
Hoses in mobile machines:
Continuous movement
Vibration
It works under torsion. When it goes below the minimum bend radius:
Wire breakage
Inner tube cracking
Sudden hose bursting becomes inevitable.
For this reason, Hidroman recommends a safe design above the values specified in the main guide in dynamic applications.
Why Standards Are Not Just "Labels"
EN, ISO and SAE standards:
Pressure tests
Impulse tests
Defines temperature cycles. These tests technically explain why the types of hydraulic hoses detailed in the main article are divided into different series.
Hydraulic Hose Selection and Types: The Right Address for Maximum Performance and Trust
The heart of hydraulic systems consists of correctly selected hoses and high-quality designed products. If you want your system to work long-lasting, safe and efficiently, choosing a hydraulic hose is a very critical step. As Hidroman, we offer you the right selection guide with our high performance, maximum safety and industry leadership principles. (hidroman.com.tr)
Why Choosing the Right Hydraulic Hose is Important
Hydraulic hoses provide fluid transmission under pressure in the system. Wrong hose selection;
Loss of performance,
Overheating in the system,
Leaks and malfunctions,
It can lead to security risks. (hidroman.com.tr)
Therefore, pressure capacity, temperature resistance, application area and certifications must be taken into account in the selection.
Our Hydraulic Hose Types
As Hidroman, we offer a wide portfolio of hydraulic hoses suitable for different needs. Each of them is designed and tested with high quality standards. (hidroman.com.tr)
1K Series – Small Pressure, Big Performance
Ideal for low and medium pressure applications.
Excellent curling ability in tight spaces.
Compatible with fluids such as mineral oils, synthetic ester oils and glycol. (hidroman.com.tr)
1T & 2T Series – Reliable Standards
It provides durability in medium pressure systems.
Wide fit with various diameter and material options.
It is preferred for simple return lines and pilot lines. (hidroman.com.tr)
2K & Harvester Series – High Pressure Ready
Superior performance in systems requiring high pressure.
High yields in agricultural and heavy machinery applications.
Production in accordance with ISO and EN standards. (hidroman.com.tr)
GoldenSPIR & R Series – Ultimate Durability
With its 4-ply spiral steel structure, it is ideal for heavy-duty applications.
It provides high temperature and pressure resistance.
Reliable in harsh industrial environments. (hidroman.com.tr)
5 Golden Criteria for the Right Choice
Operating PressureThe maximum pressure that the hose can withstand is the basic criterion for system safety. (hidroman.com.tr)
Temperature RangeChoosing a hose suitable for the ambient and fluid temperature extends the life. (hidroman.com.tr)
Inner Diameter and Fluid CompatibilityThe right diameter optimizes the flow rate and system. (hidroman.com.tr)
Norms and StandardsEN, ISO and SAE norms guarantee product performance. (hidroman.com.tr)
Application Area: Specific selection based on agriculture, industrial systems, or high-pressure equipment. (hidroman.com.tr)
The Hidroman Difference: Trust & Luxury Solution
At Hidroman, we don't just sell products — we design the right hydraulic hose solution for your system with a focus on performance and safety. Each of our hose types,
With high quality standards,
With maximum durability,
It is offered in accordance with the needs of the sector. (hidroman.com.tr)