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Automotive Lift Repair Florida | Hydraulic Hose Types and Usage

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  • Types of Hydraulic Hoses

    Hydraulic hoses and systems are ubiquitous if you know where to look. Whether you’re passing by orange construction barrels or using a zero-turn lawn mower or garbage truck, you’ll find hydraulic systems in action. They’re also integral to car brakes, outboard motors, and various manufacturing processes.

    Automotive Lift Repair Florida Hydraulic hoses and systems use pressurized hydraulic fluid to perform mechanical work. The hydraulic fluid, which can be oil or water-based and is incompressible, efficiently transfers energy from a pump to a motor or cylinder. For instance, in a basic hydraulic system like a log splitter, the pump draws fluid from the reservoir, pressurizes it, and sends it through a hose to a cylinder with a wedge. The cylinder pushes against the log until it splits, and then the fluid returns to the reservoir through a return hose to cool down and prepare for the next cycle.

    Contact Our Automotive Lift Repair Florida Hose Experts

    Understanding your system’s details (see our Stamped article) can help you select the right hose. Choosing a hydraulic hose is straightforward once you grasp the various options available.

    There are numerous hydraulic hose specifications from different manufacturers, including 19 SAE 100R specs and various European EN specs. However, you essentially have three main types: rubber with metal wires, thermoplastic with textile reinforcement, or Teflon with stainless braid. While other application-specific specs exist, these are your primary choices. Once you determine which type you need, the selection process becomes simpler.

    Here are some key points to consider:

    – Hydraulic hose part numbers represent the inside diameter in 1/16ths. For example, -04 indicates a ¼” inside diameter, while -12 represents ¾”.

    – Hydraulic hoses typically have a 4:1 safety factor, meaning a hose rated for 3,000 psi will burst at 12,000 psi or more. Jack hoses, however, often have a 2:1 safety factor due to their static, low-stress applications. Consult our Hose Pros for safety factor concerns.

    A hydraulic hose consists of three main components: the tube (which carries the hydraulic fluid), reinforcement (which provides strength and pressure resistance), and the cover (which protects against abrasion and corrosion).

    Automotive Lift Repair Florida Hydraulic Hose Construction Types

    For the pressure side of a hydraulic system, hoses are generally made from rubber, thermoplastic, or Teflon. For the return side, hoses are designed to handle suction.

    – Rubber Hoses: Typically made from nitrile rubber, these hoses are compatible with most hydraulic fluids. They can have textile braid for lower pressures (under 1,000 psi) or high tensile steel wire for higher pressures (up to 7,000 psi). Reinforcement layers vary from one to six.

      – 1 Wire Braid: Used in lower pressure systems.

      – 2 Wire Braid: Also for lower pressure systems.

      – 4 Wire Spiral: Suited for high-pressure applications (4,000-6,000 psi) and handles impulse well.

      – 6 Wire Spiral: Reserved for large diameter and ultra-high pressure (up to 7,000 psi).

    Rubber covers are engineered to withstand abrasion and environmental elements, with some having UHMW coatings for extreme abrasion protection. Specialty hoses can handle high temperatures (up to 300°F+) or low temperatures (as low as -70°F).

    – Automotive Lift Repair Florida Thermoplastic Hoses: Made with a nylon tube, synthetic fiber reinforcement, and a polyurethane cover, these hoses are used in general hydraulics, material handling, and near electrical systems. They handle pressures similar to 1- and 2-wire hoses and are ideal where rubber hoses may not be suitable. The polyurethane cover is particularly effective against abrasion.

    – Automotive Lift Repair Florida Teflon (PTFE) Hoses: Featuring a Teflon tube and stainless braid reinforcement, these hoses do not require a cover due to the non-corrosive nature of the stainless braid. Teflon hoses are used where corrosion resistance, chemical compatibility, or high temperatures (up to 450°F) are necessary. Be mindful of size and bend radius, as Teflon hoses are rigid and prone to damage if bent too sharply.

    Return Line Hoses

    Return line hoses handle suction and return hydraulic fluid to the system’s beginning. Typically, they are rubber hoses with a textile braid for positive pressure and a helical wire to accommodate suction.

    Truck Hose – Hydraulic Hoses

    Truck hose is a distinct category within hydraulic hoses. According to SAE 100R5, it is a fabric-covered, single-wire hose commonly used in various systems of on-highway vehicles. Unlike standard hydraulic hoses, truck hose sizing does not adhere to the 1/16th inch increments. Instead, the actual inside diameter (ID) can be 1/16” to ” smaller than the nominal size. For more details on 100R5 hose, reach out to the Hose Pros at TCH for assistance.

    Hydraulic Hoses: An Overview

    Automotive Lift Repair Florida Hydraulic hoses play a crucial role in nearly all hydraulic systems. If a hose suddenly fails, it can cause significant disruption. The flexibility of hydraulic hoses allows for the optimal placement of system components, enabling them to navigate around corners, fit into tight spaces, and span various lengths.

    However, choosing the right hydraulic hose can be daunting given the wide range of options available. Is there a simpler way to make the right choice?

    To help, we’ve created a comprehensive guide to assist you in selecting the ideal hydraulic hose for your needs. Read on to learn more!

    What Are Automotive Lift Repair Florida Hydraulic Hoses Made Of?

    Modern hydraulic hoses consist of three main parts: an inner tube, a reinforcement layer, and a protective cover. 

    – Inner Tube: This flexible component carries the hydraulic fluid and must be compatible with the type of fluid used. Common materials include synthetic rubber, PTFE (Teflon), and thermoplastics.

    – Reinforcement Layer: This provides strength and pressure resistance and can be made from braided wire, textile yarn, or spiral-wound wire.

    – Protective Cover: Designed to resist oil, abrasion, and environmental factors, the cover’s material should be chosen based on the hose’s operating environment.

    How to Choose the Right Hydraulic Hose

    When designing a hydraulic system, consider these seven factors to select the appropriate hose and couplings. Remember the acronym STAMPED: Size, Temperature, Application, Materials, Pressure, Ends, and Delivery. Here’s why each factor is important:

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