Swivel Hook Extension Spring/Extension Springs Swivel Hook Extension Spring/Extension Springs Swivel Hook Extension Spring/Extension Springs
Swivel Hook Extension Spring/Extension Springs Swivel Hook Extension Spring/Extension Springs Swivel Hook Extension Spring/Extension Springs

Swivel Hook Extension Spring

  Swivel hook extension springs are a highly versatile type of extension spring.
Unlike standard hooks, the hooks on both ends of a swivel hook extension spring are designed to freely rotate, which greatly enhances the spring’s flexibility and allows it to perform exceptionally well in various specialized equipment.

  They are primarily used in mechanical devices, and the main difference from regular hooks is that both ends can rotate, providing added adaptability. Therefore, swivel hook extension springs are considered a highly practical spring type, widely used across many fields due to their flexible nature.

  When selecting a swivel hook extension spring, it is important to consider the specific application requirements, taking into account factors such as hook type, material, and dimensions. These factors are often critical and make swivel hook extension springs the preferred choice for many customers.

  Swivel hook extension springs are a very practical type of spring, and their flexible characteristics enable them to be widely used in numerous industries. When choosing a swivel hook extension spring, it is essential to comprehensively evaluate the hook design, materials, and dimensions according to the specific application needs.


Features of Extension Springs with Swivel Hooks

  1. Rotatable hook:
    The most distinctive feature of a swivel hook is its ability to freely rotate. This allows the spring to accommodate various angles and directions during installation and use, greatly improving its flexibility and practicality in applications.

  2. Applications of swivel hooks:
    Thanks to their flexible nature, extension springs with swivel hooks are widely used in various mechanical equipment, electronic devices, medical instruments, testing and inspection equipment, and automation machinery.

  3. Custom design of swivel hooks:
    The shape, size, and material of the swivel hooks can be customized according to different application requirements to meet specific customer needs and expectations.

When selecting a swivel hook, the shape and size must be designed based on the customer’s specific application. Common materials include stainless steels such as SUS304, SUS301, SUS316, and SUS631, as well as music wire, high-carbon spring steel, and sometimes alloy steels, depending on customer requirements and the working environment.

For surface treatment, options include white zinc plating, blue zinc plating, trivalent yellow chromate (rainbow plating), nickel plating, chrome plating, and others, to enhance corrosion resistance.

Extension springs with swivel hooks are a highly practical type of spring. Their flexible features allow them to be widely used across many fields. When choosing an extension spring with a swivel hook, it is essential to consider factors such as hook type, material, and dimensions based on the specific application needs.

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English Hook Tension Springs

Extension Springs/V-shaped hooks
  V-shaped German hook extension springs refer to extension springs with hooks at both ends designed in a V shape, originating from Germany, hence called German hooks.Compared to traditional round hooks, the V-shaped hooks provide stronger grip, making the spring less likely to detach under load.  V-shaped German hook extension springs feature a specialized hook shape suitable for unique assemblies where tensile force is applied. When stretched, the spring exerts a counteracting force using its restoring tension.

Extension Springs/V-shaped hooks

Short German Hook Tension Springs/Extension Springs
 Short German hook extension springs are a specialized type of extension spring featuring short German-style triangular hooks at both ends.This design enables the spring to provide strong tension within limited space and allows for a more compact installation. The short German hook is compact and robust, making it suitable for applications with restricted space and customizable development according to customer requirements.  The short German hook is ideal when the hook area on the product is small. Like other extension springs, it works by exerting a counteracting force when stretched, utilizing the restoring tension force. 

Short German Hook Tension Springs/Extension Springs

Extension spring with mixed hooks/Tension Springs
  Mixed hook extension springs refer to extension springs that combine two or more types of hooks on a single spring.These hooks can differ in shape, size, or even material. This design offers high flexibility and can meet various complex application requirements.

Extension spring with mixed hooks/Tension Springs

Extension Spring/Small Outer Diameter Hooks
  Small outer diameter extension springs are mostly customized products requested by customers. They are helical springs that elastically deform under axial tensile force. Unlike compression springs, extension springs typically have coils that are tightly wound without external force applied, requiring a certain amount of tension to separate the coils.  These extension springs feature a small outer diameter with hooks at both ends. Due to their small outer diameter, they can provide strong tension even in limited space, making them widely used in precision instruments, electronic products, and other fields.

Extension Spring/Small Outer Diameter Hooks