Sugatsune America's concealed torque hinge HG-TU07 provides friction-based position control for industrial panels with hidden hinge hardware. Installed behind a door or cover, it supports equipment designs requiring concealed mounting and controlled movement.
The HG-TU07 provides 6.2 lb·in (7.1 kgf·cm) of torque per hinge and permits opening angles up to 90°. Its fixed-friction mechanism helps hold appropriately sized panels at any angle , reducing reliance on separate positioning stays. The hinge can be used in horizontal and vertical installations, provided that the rotational torque on the lid or panel is within specifications.
HG-TU07 Technical Specifications
- Maximum torque: 6.2 lb·in (7.1 kgf·cm or 0.70 N·m /) per hinge
- Initial torque variation: -20% to +40%
- Main material: 304 stainless steel body and base; 303 stainless steel shaft
- Finish: Polished
- Mounting Hole Pitch: 1-1/32” (26mm) Unit weight: 50 g
- Maximum opening angle: 90°
- Installation: Concealed, behind the door; horizontal or vertical orientation
- Mounting: Four holes; 4 mm or #8 self-tapping screws required, not included
- Adjustment: Non-adjustable friction mechanism but the HG-TUF is torque free and can be paired to reduce the overall friction.
- Compliance: RoHS compliante
The HG-TU is for indoor use only and lubricants should not be used. Engineering Considerations for Concealed Panel Hinges
Before specifying a concealed panel hinge HG-TU07, calculate the moment generated by the panel's weight and the distance between its center of gravity and the hinge axis. The easiest way to calculate the torque for your application is to take the door weight, multiply it by the distance from the hinge side to the edge, and then divide by 2.
Torque = 1/2 X (Weight of the door) x (Measured Distance of the panel from the hinge side)
Download drawings from Sugatsune's CAD file resources before finalizing the assembly.
Industrial Applications and Related Models
Potential applications include sheet metal inspection covers, access panels on industrial machinery, lockers, or medical ll equipment storage. Final selection should reflect operating frequency, environment, and the panel's actual load characteristics.
For lower resistance within the same 90° HG-TU series, compare the HG-TU03 concealed torque hinge, rated at 3.6 kgf·cm (3.1 lb·in). If a wider opening is required, review the HG-TUWA07, which opens to 130° and has different mounting dimensions.
Contact Sugatsune America for assistance with hinge selection and engineering requirements.
Concealed Torque Hinge - HG-TU07 FAQs
What is the torque rating of the HG-TU07?
The HG-TU07 is rated at 6.2 lb·in (7.1 kgf·cm) per hinge. Initial torque may vary from -20% to +40%.
Can the concealed panel hinge HG-TU07 be installed on vertical panels?
Yes. It supports horizontal and vertical mounting, provided the panel loads, hinge alignment, and mounting surfaces are suitable.
Is the HG-TU07 suitable for outdoor or frequent operation?
No. Sugatsune specifies indoor use only and states that the hinge is not suitable for high-frequency operation. Do not lubricate it.
