Hager BB1279 4-1/2X4-1/2 26D ETM-4 4.5" x 4.5" Ball Bearing Hinge US26D

Hager BB1279 4-1/2X4-1/2 26D ETM-4 Ball Bearing Hinge offers an exceptional blend of functionality and durability, making it a reliable choice for both commercial and residential applications. This full mortise hinge, measuring 4-1/2" by 4-1/2", is constructed from high-quality steel and features a satin chrome finish that enhances its aesthetic appeal while ensuring long-lasting performance. Designed for use on hollow metal or wood composite doors with hollow metal frames, this standard weight hinge is ideal for medium frequency service. Its five knuckle design and ball bearing mechanism promote smooth operation and reduce friction, making door movement effortless. Additionally, the hinge is fire rated for up to 3 hours, ensuring compliance with safety standards. Hager’s commitment to quality is reflected in their adherence to ANSI/BHMA standards. The BB1279 hinge features a non-removable pin, providing added security against tampering. Installation is straightforward, making it suitable for a variety of door applications. With its reliable performance, elegant finish, and robust design, the Hager BB1279 is an excellent choice for those seeking a dependable hinge solution.

BALL BEAR HINGE 4.5X4.5 US26D

Full Mortise Ball Bearing Hinge, Standard Weight, 4-1/2" by 4-1/2", Steel, 5 Knuckle, 4-Wires, Monitor, Satin Chrome Finish

Ball bearing standard weight steel base hinge for use on hollow metal or wood composite doors with hollow metal frames requiring medium frequency service

There are three dimensions to know in order to determine the minimum width of the hinge: door thickness, backset, and clearance required.

Today, the Hager name is synonymous with architectural hinges. In fact, they are the industry’s premiere designer and manufacturer of architectural hinges, with a product line that offers one of the widest varieties of sizes, shapes, and finishes--all of which meet or exceed ANSI standards. 

• Hinges are manufactured in accordance with ANSI/BHMA A156.1. Self-closing hinges and pivots are in accordance with ANSI/BHMA A156.17 using three hinges per opening on a 3’0” x 7’0” x 1-3/4” (914 mm x 2134 mm x 44 mm) door. 
• Round corners are available in 1/4” (6 mm) (standard) or 5/8” (16 mm) radius.
• Full Mortise Both leaves are mortised, one leaf in the door and one leaf in the frame (wood door or hollow metal door with wood frame or hollow metal frame). Example: BB1279, 4-1/2” x 4-1/2” (114 mm x 114 mm), US26D
• Half Mortise One leaf is mortised in the door and the other is surface applied to the frame (hollow metal door with channel iron frame). Example: BB1109, 4-1/2” (114 mm), US26D
• Full Surface Both leaves are applied to the surface, one to the door and the other to the frame (metal core door or hollow metal door with channel iron frame). Example: BB2171, 5” (127 mm), USP
• Half Surface One leaf is mortised in the frame and the other is surface applied to the face of the door (wood door with wood frame or metal core door with hollow metal frame) Example: BB1163, 5” (152 mm), US26D

Resources

• Hager Commercial Hinges Cut Sheet