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Examples and Uses of Hydraulic Tools and Equipment

Hydraulic Repair Near Me Hydraulic tools are powered by the energy from pressurized fluids, transmitting this force through a system to activate the dynamic components of machines, enabling them to carry out a variety of tasks. This technology is particularly potent because hydraulic fluids are incompressible, thus systems can work under high pressure, making these tools ideal for construction and demanding industrial jobs.

Different elements compose Hydraulic Repair Near Me hydraulic systems, which serve numerous industrial purposes. As a seasoned distributor and service provider, Metro Hydraulic offers expertise in hydraulic components, guiding businesses to suitable hydraulic solutions.

Introduction to Hydraulic Systems

A hydraulic system is comprised of various parts such as fluid, a reservoir, pump, motor, valves, and cylinder, all tailored to suit complex applications.

Hydraulic Fluids

Acting as the conduit for energy in hydraulic systems, hydraulic fluids come in a wide variety. The optimal hydraulic fluid should be thermally stable, chemically resistant, hydrolytically stable, economical, durable, and resistant to wear. Oil-based fluids are prevalent due to their customized properties that meet anti-wear and anti-corrosion requirements with fewer safety and maintenance concerns.

For situations where oil-based fluids are inappropriate, like in fire/rescue scenarios, alternatives such as water-glycol, invert emulsion, or ester-based fluids are used due to their fire resistance.


The reservoir’s role is to store the fluid near the pump inlet, dissipate heat, separate moisture and air from the fluid, and allow contaminants to settle.

Hydraulic Pump

This pump circulates the hydraulic liquid and transforms mechanical energy into hydraulic energy. It can be powered by different sources and comes in various forms like piston, vane, and gear pumps.


The actuator reverts the hydraulic power into mechanical energy, being either rotary (motors) or linear (cylinders).


These components manage the flow and pressure within the system, influencing the dynamics between the reservoir, pump, and actuator.

Hydraulic Machines: Examples and Applications

Hydraulic machinery excels in transmitting significant power through flexible components, handling heavier loads and exerting more force than other systems, with constant torque and force that is not impacted by speed changes.

Advantages of Hydraulic Repair Near Me Hydraulic Tools in Industrial Settings

They are user-friendly, precise, adaptable to various weights, provide steady force and torque, have fewer moving parts for simple maintenance, and are non-sparking, thus safe in explosive environments.

Industrial Use Cases of Hydraulic Equipment

Hydraulic systems are integral in modern construction, mining, tunneling, installing barriers, and even affixing street signs, among other uses.

Metro Hydraulic: Trusted Provider of Industrial Hydraulic Solutions

Metro Hydraulic stands as a principal supplier and service center, offering hydraulic tools, parts, and services for diverse industries. Their extensive inventory features cylinders, pumps, valves, and an array of equipment, supported by a legacy of over seven decades in the industry.

The term “hydraulic fluid” is often brought up when discussing the force transmission in hydraulic machinery. Hydraulic equipment harnesses the power of fluids to perform tasks, and this guide will provide insight into the application of hydraulic fluids in various machines such as excavators, backhoe loaders, aircraft control systems, and industrial tools.

Hydraulic Repair Near Me Hydraulic fluids are predominantly composed of base stock, typically 99%, with the addition of around 1% of various additives to enhance performance. Mineral oils are frequently used as the base stock in modern hydraulic fluids, but alternatives like propylene glycol or silicone oils may be chosen for special applications. Additives in hydraulic fluids serve various functions, including corrosion prevention, wear reduction, minimizing friction, and preventing foam formation.

Exploring the Different Types of Hydraulic Fluids:

  • Petroleum-based Fluids: These mineral oils are the most common in hydraulic systems due to their availability and cost-effectiveness. Their main drawback is their flammability, posing a risk in high-temperature settings such as metal processing or in coal mining operations.
  • Synthetic Fluids: Phosphate ester-based synthetic fluids are valued for their fire resistance and are suitable for high-temperature environments. Despite their high viscosity and excellent lubrication qualities, they may degrade certain seal materials and react with aluminum and paints, not to mention their environmental impact.
  • Vegetable Oils: These oils are eco-friendly and biodegradable with decent lubrication and moderate viscosity. They are typically not fire-resistant but can be modified with additives. However, they are prone to oxidation and moisture absorption.
  • Water Glycol: Used in aviation hydraulic systems, these non-flammable fluids consist of an equal mix of water and glycol. Care must be taken due to their corrosive nature to certain metals and toxicity.
  • Emulsions: These mixtures of two non-reactive fluids often combine petroleum-based oils with water and an emulsifier to maintain stability. There are two primary types:
    a. Oil in water emulsions (5:95 ratio): With water as the main phase, these emulsions exhibit water-like properties and are used in specific applications such as mining but may require additives to address issues like viscosity and lubricity.
    b. Water in oil emulsions (40:60 ratio): Known as inverse emulsions, they have oil as the primary phase and are more oil-like in their characteristics. They are favored for their fire resistance, lubrication, and viscosity.

Understanding Viscosity in Hydraulic Repair Near Me Hydraulic Fluids

Viscosity is a key factor in choosing hydraulic oil, signifying the fluid’s resistance to flow at a specific temperature. Consistency in temperature is essential when measuring viscosity to ensure comparability. Fluids with low viscosity flow quickly and easily, while those with high viscosity flow more sluggishly and offer greater resistance. The optimal viscosity level for a hydraulic fluid varies with the application, with standard kinematic viscosity ranging from 10 to 100 mm²/sec.

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Characteristics of Hydraulic Fluids

Hydraulic Repair Near Me Hydraulic systems rely on the movement of the working fluid for operation, and the fluid also serves to remove heat from the system components, acting as a coolant. The choice of hydraulic fluid is dictated by the specific needs of the power system.

Always be sure to exercise all necessary safety precautions when working with hydraulics.