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HG-TQJ100 Hinge Fast Facts: How Does a Friction Hinge Work?

Fast Facts: HG-TQJ100 One-Way Adjustable Torque Hinge

Today we are sharing some fast facts on our HG-TQJ100 Series Hinge. The HG-TQJ100 is our one-way, adjustable torque hinge. We’ll answer:

  • What models of HG-TQJ100 hinge are available?
  • What is a one-way torque hinge?
  • How do torque hinges work / how does a friction hinge work?
  • What are the uses for torque hinges?

Two Hinge Models for Resistance in Either Direction

We make two versions of the HG-TQJ100 hinge:

  • The HG-TQJ100-A offers resistance in the opening direction. This is useful for applications where you don’t want the lid or panel to open by itself but do want it to close easily.
  • The HG-TQJ100-B offers resistance in the closing direction. This is useful for applications where you don’t want the lid or panel to close by itself but do want it to open easily.

View Product Catalog

Adjustable Torque

Each version of the hinge is capable of providing an adjustable amount of torque, from zero to 88.7 pounds of torque lbs-in. (0 – 102 kgfcm). The adjustment is easily made with an Allen wrench.

Use Applications

How does a friction hinge work in practical terms? The HG-TQJ100 one-way torque hinge is perfect for situations where you have to reach inside an enclosure and work on something.

HG-TQJ100-A (Resists Opening)

The HG-TQJ100-A is useful in a variety of equipment applications where the panel is working against gravity to remain shut and the purpose of the torque is simply to keep the panel shut when not in use, while also keeping it easy to close once use is finished.

HG-TQJ100-B (Resists Closing)

The HG-TQJ100-B is useful whenever easy-open functionality is desired but there is a danger of unintentional panel closure. Examples include equipment lids that are meant to swing open easily but not shut until desired and larger flaps or panels that need to be kept as easy as possible to open, but must not shut by themselves.

Imagine being on an assembly line, working inside of a medical device, under a fume hood, or in any type of heavy-lid enclosure where you have to retrieve something or work on something while putting your body partially inside of the enclosure. With the HG-TQJ100, we can prevent accidental closures with that torque resistance, making the workplace more ergonomically sound and safer.

What Is a Basic / Constant Torque Hinge?

Torque hinges are sometimes also known as friction hinges or free-stop hinges.

Basic torque hinges, also known as “constant torque hinges,” offer the same resistance in both directions, at all hinge positions between open and closed.

Visit Our Torque Hinge Knowledge Center

How Do Torque Hinges Work?

That is better answered by rewording the question as, “How does a friction hinge work?” The answer, of course, is friction! The components of the hinge are pressed tightly together to prevent the hinge from swinging freely under the weight of its load. Higher resistance is achieved through higher friction.

What Is a One-Way Torque Hinge?

One-way torque hinges offer constant torque in only one direction. In the other direction, there is no torque at all. This is useful whenever you want a door, lid, or panel to be able to open easily but not close easily, or vice versa—particularly when dealing with large or heavy doors.

How Can a Friction Hinge Work in Just One Direction?

One-way torque hinges work by applying frictive resistance in just one direction. This can be achieved through a variety of asymmetrical mechanisms. At Sugatsune, we engineer solutions for precision, smooth operation, and durability. We ask ourselves, “How does a friction hinge work in just one direction while supporting heavy loads, in high-use situations, while still retaining a long product lifespan?” 

Get More Information from Our Technical Support Team

We hope this answers your basic questions about the HG-TQJ100 Series Hinge, as well as questions about its specs and broader questions like “How do torque hinges work?” and “how does a friction hinge work?”

If you have any more questions or would like more information, feel free to reach out to us.

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