Roton 780-112 Continuous Hinge, Concealed Leaf Medium Weight Door
ROTON 780-112 is a Standard-Duty Concealed Leaf Continuous Hinge which is mortised to the frame rabbet and door edge and can accommodate flush doors.  Can be used for any standard frame without hinge preps, either with or without reinforcements depending on door weight. Compatible with sheet metal or wood door frames and is available in a choice of lengths and finishes.
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Roton 780-112 continuous geared, standard-duty concealed leaf hinge by Hager companies.
- Available in three sizes:Â (chart)
- Bearings:Â Spaced to distribute door weight evenly up to 200 pounds.
- Finish: Clear anodized aluminum or dark bronze anodized aluminum.  Custom colors are available,  for details and pricing please contact us or call us at 845-388-1300.
- Materials:Â Constructed from low temperature, corrosion resistant aluminum.
- Design:  Concealed leaf with frame and door leaf alignment ribs for proper hinge and door location.  Leaves are mortised to the frame rabbet and door edge. (see Product Data Tab.)
- Fasteners:Â #12-24 x 11/16" Flat Head Self-Drill Screws for metal doors.
- Applications: For wood or metal applications.  Designed to accommodate flush doors. Can be used with any standard frame without hinge preps. Â
- ​Clearance: Minimum clearance between the hinge edge of the door and the frame is 5/16" plus standard lockside clearance.
- Reinforcement:Â No door or frame reinforcement necessary for loads up to 200 lbs. Â For heavier weight use 16 gauge channel.
- Fire-Rating:Â Up to 3 hr. metal and 90 min. wood composite when installed with studs. Â (See Product Data Tab for more information.)
- Electric Modification:  Exposed Electric Switches (E1S), Power Transfer Preparation (EPT 2) or (EPT 10), Exposed Electric Contacts (E), Electric Through Wire (ETW), Electric Monitoring (EMN), Electric Through-Wire and Monitoring (ETM) are available through our office, for details and pricing please contact us or call us at 845-388-1300.
- Installation: Can be used with any standard frame without hinge preps. Installed either with or without reinforcements depending on door weight. Installation screws are provided (see Installation Tab.) Â
- Additional Options:  Including specialty cover channels, top bearing, hospital tip and customize hole patterns may be ordered, for details and pricing please contact us or call our office at 845-388-1300.Â
- Priced per piece
- Please note, images are for illustrative purposes only. They are not actual photos. Therefore, actual colors may vary slightly and size may be enlarged to show detail. See product specs for exact measurements.
Click here to view our Roton 780-111HD Continuous Geared Concealed Leaf Hinge.
This product has a lifetime warranty against defects in workmanship and material.Â
Click here to view our Full Warranty Policy.
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QuickShipNo
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ManufacturerHager Companies
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MPNH780-112
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Finish OptionsClear Anodized Aluminum (US28), Dark Bronze Anodized Aluminum (US10B)
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Door TypeMetal Door (Standard), Wooden Door
Printable Documents:
Click to print Roton 780-112 Continuous Hinge 79" Product Template.
Click to print Roton 780-112 Continuous Hinge 83" Product Template.
Click to print Roton 780-112 Continuous Hinge 85" Product Template.
Click to print Roton 780-112 Continuous Hinge 95" Product Template.
Click to print Roton 780-112 Continuous Hinge 119" Product Template.
Click to print Electrical Modification Information
Click to print ANSI A250.13 - Windstorm Certification 5-2013.
79" Product Template:
Standard Locations for Electrical Modifications:
Â
Printable Documents:
Click to print Installation Instructions for Roton 780-112Â Continuous Hinge.Â
Installation:
Roton models 780-111, 780-112, 780-226 and 780-235 are Aluminum Continuous Geared Concealed Leaf Hinges. Model 780-111 provides a 1/8" door inset. The others accommodate flush doors. Each can be used with any standard frame without hinge preps, and either with or without reinforcements depending on door weight. Clearance required between the hinge edge of the door and the frame rabbet is 5/16" (7.9 mm) minimum. For 780-235 allow for an additional 1/32" to lock side clearance. "HD" models have additional bearings for heavy-duty application. The 780-226 is intended for doors 2" or thicker.
Hinge Length:
All ROTON hinges are supplied approximately 1" shorter than the nominal door height to avoid threshold or carpet clearance problems. If the hinge must be trimmed shorter, first determine the correct hand of the door and orientation of the hinge. Then mark and trim from the bottom of the hinge only - do not cut from the top end.
General Fitting Procedure:
For new construction with metal doors/frames: To accommodate the 5/16" (7.9mm) hinge clearance required for these ROTON models, order the door undersized or the frame header oversized. See the clearance information above to attain the proper size. Mortar guards, either Styrofoam or wood, are recommended for frames to prevent grout from interfering with the installation of the hinge fasteners.
For new site-hung wood doors: If necessary, scribe and cut from the latch edge of the door to leave sufficient hinge stile thickness for proper fastening. A minimum clearance of 5/16" (7.9mm) is required between the hinge edge of the door and the frame rabbet. See the clearance information above to attain the proper finished width of the door.
For remodeling with existing wood or laminate doors: If necessary, scribe and cut from the hinge edge of the door and plane smooth. A minimum clearance of 5/16" (7.9mm) is required between the hinge edge of the door and the frame rabbet. See the clearance information above to attain the proper finished width of the door.
Frame Preparation:
1. With the hinge open, place the hinge frame leaf against the frame rabbet making certain that the alignment rib is flush against the frame face along its entire length. Position the top of the hinge 1/16" (1/8" maximum) below the header. Note: A 1/16" shim is recommended due to initial settling of the bearing.
2. Mark and center punch the screw hole location. Accurate location is important for proper installation.
3. For metal frames 12 gauge or less, it is not necessary to pre-drill pilot holes if using the self-drilling screws provided. For metal frames thicker than 12 gauge, drill and tap all mounting holes for #12-24 threads prior to installing the screws. for wood frames, pre-drill pilot holes using 1 #18 bit for optional #12 wood screws.
4. Do not attach the hinge to the frame at this time.
Door Preparation:
1. With the hinge open, place the hinge door leaf against the edge of the door making certain that the door alignment rib is flush against the door face along its entire length. Position the top of the hinge flush with the top of the door.
2. Mark and center punch the screw hole locations. Accurate location is important for proper installation.
3. For hollow metal doors 12 gauge or less, it is not necessary to pre-drill pilot holes if using the self-drilling screws provided. For metal door thicker than 12 gauge, drill and tap all mounting holes for #12-24 threads prior to installing the screws. For wood doors, pre-drill pilot holes using a #18 bit for optional #12 wood screws (provided with LL models).
4. Attach the hinge to the door. For metal doors, use the #12 self-drilling screws provided (recommended driver speed 1,900-2,500 RPM). For wood doors, use optional #12 wood screws.
Hanging the Door:
1. Position the door (with hinge attached) at 90 degrees to the frame. Attach the hinge to the frame rabbet. For metal frames, use the #12 self-drilling screws provided (recommended driver speed 1,900-2,500 RPM). For wood frames, use optional #12 wood screws.
2. Make a gentle trial swing. Carefully check the door for proper swing and clearance.
Adjusting the Door:
1. If lateral adjustment of the door is required due to excessive or uneven door/frame clearance, adjust by shimming where needed: a. For minor adjustments, an effective shimming material is 1 1/2" cloth duct tape. Apply the tape in stepped layers underneath the frame leaf where needed to build up to the desired thickness.
b. To shift the entire door, a thin continuous aluminum strip may be used underneath the frame leaf (available in 1/16"(1.6mm) and 1/8" (3.2mm)thicknesses).
2. Retighten all screws. Carefully check the door for proper swing and clearance.
Fire-Rating:
780 Series Roton continuous geared hinges with stainless steel studs are approved for use on 4'x10' metal or wood swing type doors. Â 780 Series Roton continuous geared hinges without stainless steel studs are approved for use on 4'x8' single swing metal doors and 4'x10' single swing wood doors used without stainless steel studs limited to 20 minute fire-rating without hose stream.
- Hollow metal, tin-clad, sheet-metal and steel covered composite type rated up to and including 3 hours
- Wood composite doors rated up to and including 1 1/2 hours.Â
- Wood core doors rated up to 20 minutes without hose stream, non-studded
- 780 Series Roton Continuous Geared Hinges meet requirements for positive pressure UL 10C, UL10B and UBC7-2 Part 1