Sugatsune America's concealed torque hinge HG-TUWA15 combines friction-based positioning with rear-of-door mounting for industrial assemblies where exposed hardware is undesirable. The hinge resists rotation to hold appropriately specified covers and panels at any angle, reducing the need for separate positioning stays.
Unlike a conventional free-swinging hinge, this design provides rotational resistance while permitting a maximum 130° opening. The configuration supports horizontal or vertical installation, offering engineers flexibility when incorporating access points into equipment housings, fabricated enclosures, and service compartments.
HG-TUWA15 Technical Specifications
- Maximum torque: 13.2 lb·in (15.3 kgf·cm) per hinge
- Material: 304 stainless steel body and 303 Stainless Steel Shaft
- Finish: Barrel polished
- Maximum opening angle: 130°
- Weight: 88 g per hinge
- Mounting: Four holes; 5 mm or #10 self-tapping screws required
- Fasteners included: No
- Installation orientation: Horizontal or vertical
- Product compliance: RoHS compliant
- Cycle Tested: 20,000
The friction-generating mechanism provides positioning resistance to hold a panel at your desired angle. The HG-TUWA series has passed a manufacturer-reported 20,000-cycle internal opening-and-closing test. Review the product drawing to confirm required clearances, screw locations, and hinge travel before releasing fabrication drawings.
Engineering Considerations for Concealed Friction Hinges
When selecting a concealed friction hinge HG-TUWA15, calculate the moment acting on the hinge from the panel's weight, center of gravity, and operating angle. Consider the added weight of any handles or the change in the center of gravity of the panel due to the shape or lid/door design.
The simplest way to calculate the torque of your lid, panel, or door is to multiply the panel's weight by the measured distance from the hinge side, then divide the total by 2.
Torque = 1/2 x (Weight of the Panel) x (Distance of the panel measured from the hinge side)
Prototype testing is recommended when vibration, repeated operation, or offset loads are involved. Due to the nature of position hinges, torque of the HG-TUWA15 can vary by -20% ~ +40%. Sugatsune's CAD file resources can assist with dimensional review.
Industrial Applications and Related Hinges
Potential applications include control cabinet doors, machine inspection covers, instrumentation enclosures, and equipment access panels requiring concealed mounting and position control. Suitability depends on the actual panel geometry, environment, and frequency of usage. .
For lower resistance within the same concealed series, compare the HG-TUWA07 concealed torque hinge, rated at 6.2 lb·in (7.1 kgf·cm) . Browse additional torque hinges or contact Sugatsune America to discuss application requirements.
Concealed Torque Hinge - HG-TUWA15 FAQs
Can the HG-TUWA15 be installed horizontally or vertically?
Yes. Both orientations are supported. Engineers should verify panel loads, hinge alignment, and operating clearance for the intended installation.
Is the HG-TUWA15 concealed friction hinge adjustable?
No. It provides a fixed torque rating of 13.2 lb·in (15.3 kgf·cm) per hinge. Select hinge quantity and configuration based on the applied moment.
What fasteners does the HG-TUWA15 require?
The hinge has four mounting holes and uses 5 mm or #10 self-tapping screws. Fasteners are not included; confirm engagement and substrate suitability before installation.
