
Explore the HES3D-120 Concealed Hinge
The HES3D-120 is one of Sugatsune’s most popular concealed hinges, offering a balance of sleek aesthetics, precision engineering, and installation-friendly features. With a slim profile that allows for shallow mortising, it’s ideal for high-end interior doors, hidden panels, and feature cabinetry in both residential and commercial settings. The hinge features 3-way post-installation adjustability (vertical, horizontal, and depth), a split design for easy fitting to the door and frame, and a temporary holding function that supports the door without screws for hands-free alignment during installation.
Specifications:
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Opening Angle: 180°
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Max Door Dimensions: Width 900mm, Height 2400mm
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Door Thickness: 29mm minimum
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Weight Capacity: 30kg with 2 hinges, 40kg with 3 hinges
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Tested Durability: 300,000 open/close cycles
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Mounting Style: Concealed, split-type with temporary hold feature
Available Finishes:

Installation Instructions

All adjustments can be performed using a standard screwdriver, without removing the hinge from the door or jamb:
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Vertical Adjustment: ±2.5 mm
(Adjustment screws located on the jamb side – two locations) -
Horizontal Adjustment: ±2 mm
(Adjustment screws located on the door side – two locations) -
Depth Adjustment: ±1 mm
(Adjustment screws located on the jamb side – two locations)
Always ensure that all fixing screws are tightened after alignment to maintain proper function and hinge integrity.
The locus chart defines the hinge’s movement path and required installation clearances:
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The hinge opens a full 180° with minimal clearance requirements.
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The door reference surface must align with the jamb reference surface for smooth, interference-free operation.
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A corner radius of C1 or R1 or greater must be applied to the inside edges (marked ※ in the diagram) to avoid mechanical interference during opening/closing.
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Ensure a minimum pivot clearance of 8 mm is maintained in the hinge area.
Proper alignment of reference surfaces is essential to prevent binding and ensure long-term performance.


Precise cut-outs are crucial for proper hinge installation and concealed functionality. The door and jamb cut-outs are identical and must be aligned with their respective reference surfaces.
Door & Jamb Cut-Out Specifications:
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Height: 120 mm
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Width: 25 mm
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Corner Radius: R6 (8xR6)
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Depth: 21 mm
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Setback: 23 mm from door edge / 25 mm from jamb edge
Ensure cut-outs are clean, square, and burr-free for a flush fit. Poorly prepared recesses may compromise hinge performance.
CONTACT
Inquiries
For any inquiries, questions or commendations, please call: 08 9333 4999 or fill out the contact form
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Office & Warehouse
274 Welshpool Road Welshpool, WA 6106
Tel: 08 9333 4999
28 Indian Drive Keysborough, VIC 3173
Tel: 03 9706 8400
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