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Hager 780-112HD Roton Continuous Geared Hinge — Concealed Leaf, Heavy Duty, Clear Anodized Aluminum
The Hager 780-112HD is a concealed leaf continuous geared hinge from Hager's aluminum 780 Series — engineered for the highest-traffic commercial openings where conventional butt hinges sag, bind, and fail. Unlike a piano hinge or standard butt hinge, a geared continuous hinge distributes door weight and closer kickback stress uniformly along the full height of the opening, eliminating concentrated hinge-point loading. Available in three stocked lengths — 79", 83", and 95" — in a Clear Anodized Aluminum (US28 / 628) finish. Meets ANSI/BHMA A156.26 Grade 1 and is UL fire listed for rated assemblies.
Institutional Grade Features & Benefits
- Concealed Leaf Design: both geared leaves are recessed within the door and frame edges — no exposed hinge visible on the pull side when the door is closed, yielding a clean, tamper-resistant appearance ideal for schools, hospitals, correctional facilities, and high-security corridors.
- Eliminates Door Sag and Binding: full-height gear engagement carries load evenly top to bottom, removing the hinge-point stress that causes premature failure on butt-hinged openings under constant use.
- Heavy Duty (HD) Rating — Up to 300 lb: rated for high-cycle commercial doors weighing up to 300 lbs, suited for hollow metal and heavy wood-core door assemblies.
- Fire Rated: UL fire listed for use in rated assemblies — verified for use on fire-rated openings where a concealed aluminum geared continuous hinge is specified.
- Extruded 6063-T6 Aluminum Construction: corrosion-resistant aluminum extrusion with Clear Anodized finish (US28 / BHMA 628) for interior and protected exterior applications.
- 1-3/4" Door Thickness: factory-prepared for standard 1-3/4" commercial door thickness — the most common hollow metal and wood commercial door specification.
- Three Stocked Lengths: 79", 83", and 95" ship under Hager's HagerOnHand Express quick-ship program — typically 1–2 business days. Non-standard lengths and additional finishes are available on a factory lead time.
- Full-Height Screw Pattern: installation fasteners run the full length of the hinge leaf, preventing door-edge warping and distributing attachment stress along the entire jamb.
Applications
The 780-112HD is well-suited for high-frequency openings in K–12 schools, universities, healthcare facilities, correctional institutions, government buildings, and high-traffic retail or hospitality corridors. The concealed leaf profile is specified where aesthetics, anti-ligature requirements, or tamper resistance rule out an exposed surface-mounted hinge. Pairs naturally with Hager exit devices (4500 / 4700 Series), Hager door closers, and Hager mortise or cylindrical locks for a fully coordinated opening specification.
Technical Details
| Feature | Details |
|---|---|
| Model Number | 780-112HD |
| Brand / Series | Hager Roton 780 Series |
| Hinge Type | Concealed Leaf Continuous Geared Hinge |
| Grade / Duty | Heavy Duty (HD) — ANSI/BHMA A156.26 Grade 1 |
| Available Lengths | 79", 83", 95" |
| Maximum Door Weight | 300 lbs |
| Door Thickness | 1-3/4" |
| Material | Extruded 6063-T6 Aluminum |
| Finish | Clear Anodized Aluminum — US28 / BHMA 628 |
| Fire Rated | Yes — UL Fire Listed |
| Quick Ship Program | HagerOnHand Express (1–2 business days, stocked lengths) |
| Technical Standard | ANSI/BHMA A156.26 Grade 1 |
| Length | 83 Inch or 95 Inch or 79 Inch |
| Brand | Hager |
| Door Thickness | 1-3/4" Dr Thickness |
| General - US Finishes | US28 - 628/ Anodized Aluminum |
| Hinge Type | Concealed, Continuous Hinge |
| Continuous Hinge Grade | Heavy Duty |
| Hinge Grade/Thickness | Heavy Wt .180 to .190 |
| Fire Rated | Fire Rated |
| Maximum Weight of Door | 300 Lbs |
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