Our One-Way Torque Hinge HG-TQS15-B

The Sugatsune America one-way torque hinge HG-TQS15-B is engineered for applications requiring controlled motion in a single direction, providing resistance during closing while allowing smoother opening. This directional torque profile is suited for lids and panels that must return in a controlled manner without sudden drop or impact.

With a torque rating of 13.2 lb·in applied in the closing direction, the hinge regulates downward motion, improving safety and consistency in operation. Unlike bi-directional torque hinges, resistance is concentrated where it is most functionally required, during closing.

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

One-Direction Torque for Controlled Closing

The defining feature of this single-direction friction hinge is its closing-direction torque profile:

• Torque is applied during closing, preventing sudden drop or slamming
• Minimal resistance during opening, allowing easy access
• Improves operator control and reduces mechanical stress on components

This makes the hinge effective for applications where controlled return motion is critical.

Designed for Equipment Protection and Operator Safety

The one-way torque hinge HG-TQS15-B is suited for applications requiring controlled closing without additional dampers or supports:

• Industrial equipment covers and machine housings
• Access panels with downward-closing lids
• Medical and laboratory device enclosures
• Automated systems requiring consistent motion control

By regulating closing speed, the hinge helps protect both internal components and operators.

Durable Construction with Verified Lifecycle Performance

The HG-TQS15-B is engineered for long-term reliability and repeatable performance. It has passed 20,000 open/close cycle testing, ensuring consistent torque output over time.

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

This makes it suitable for applications where controlled motion and durability are required.

Type A vs. Type B: Directional Torque Selection

Proper hinge selection depends on the required direction of resistance:

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

Selecting the correct type ensures torque is applied in the intended direction of motion.

FAQs

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

A one-way torque hinge applies resistance in a single direction, allowing controlled motion where needed while minimizing resistance in the opposite direction.

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

The HG-TQS15-B applies torque during closing, while the HG-TQS15-A applies torque during opening. Selection depends on how the lid or panel operates.

Is additional hardware required?

A latch or catch is recommended to ensure secure closure, as torque hinges are designed for motion control rather than positive locking.

When should this hinge be specified instead of a standard hinge?

Use this hinge when the application requires controlled closing motion, improved safety, and reduced impact without adding dampers.

Reach Out to Our Team

Need help selecting the correct one-way torque hinge HG-TQS15-B for your application?
Contact Sugatsune America’s technical team to review motion direction, torque requirements, and integration details.