Our One-Way Torque Hinge HG-TQS15-A

The Sugatsune America one-way torque hinge HG-TQS15-A is engineered for applications requiring controlled motion in a single direction, providing resistance during opening while allowing smoother return in the opposite direction. This directional torque profile makes it well suited for lids and access panels that must remain open without continuous user support.

With a torque rating of 13.2 lb·in applied in the opening direction, the hinge delivers stable positioning throughout the lift motion. Unlike bi-directional torque hinges, resistance is concentrated where it is most functionally required, during opening, improving usability and control.

Constructed from 304 stainless steel, the HG-TQS15-A offers corrosion resistance and durability for demanding environments. The hinge weighs 89 g, providing a balance of strength and compact design for integration into industrial and architectural assemblies.

One-Direction Torque for Controlled Opening

The defining feature of this one-direction torque hinge is its directional resistance profile:

• Torque is applied during opening, supporting lid lift and position holding
• Minimal resistance during closing, allowing smooth return motion
• Reduces operator effort compared to bi-directional torque hinges

This makes the hinge effective in applications where controlled lift and easy closure are both required.

Designed for Equipment Access and Serviceability

The one-way torque hinge HG-TQS15-A is suited for applications requiring stable open positioning without additional support hardware:

• Industrial equipment covers and service panels
• Medical and analytical device enclosures
• Automated machinery access doors
• Maintenance panels requiring frequent opening

By holding the lid in position during service, the hinge improves operator safety and workflow efficiency.

Durable Construction with Verified Lifecycle Performance

The HG-TQS15-A is built for long-term reliability in demanding environments. It has passed 20,000 open/close cycle testing, ensuring consistent torque performance over repeated use.

• Material: 304 stainless steel
• Weight: 89 g
• Torque: 13.2 lb·in (opening direction)
• Function: One-direction torque (Type A)

This combination supports applications where repeatability, durability, and controlled motion are required.

Type A vs. Type B: Directional Torque Selection

Selecting the correct torque direction is critical for proper performance:

• HG-TQS15-A (Type A): Torque applied in the opening direction (top-opening lids)
• HG-TQS15-B (Type B): Torque applied in the closing direction (bottom-opening lids)

Choosing the appropriate type ensures the hinge provides resistance in the intended direction of motion.

FAQs

What is the advantage of a one-way torque hinge?

A one-way torque hinge provides resistance in a single direction, allowing controlled opening while reducing effort during closing. This improves usability and efficiency in service applications.

How does HG-TQS15-A differ from HG-TQS15-B?

The HG-TQS15-A applies torque during opening, while the HG-TQS15-B applies torque during closing. Selection depends on the direction of lid movement.

Do I need additional hardware with this hinge?

A latch or catch is recommended to keep the panel securely closed, as torque hinges are designed for motion control rather than positive closure.

When should this hinge be specified instead of a bi-directional torque hinge?

Use a one-direction torque hinge when the application requires resistance during opening but minimal resistance during closing, improving operator ergonomics.

Reach Out to Our Team

Need help selecting the correct one-way torque hinge HG-TQS15-A for your application?

Contact Sugatsune America’s technical team to review motion direction, torque requirements, and integration details.