Hager BB1279 Full Mortise Ball Bearing Hinge with 5 Knuckle Design

Hager BB1279 Full Mortise Ball Bearing Hinge with 5 Knuckle Design

Commercial-Grade Full Mortise Hinge Solution

The Hager BB1279 Full Mortise Ball Bearing Hinge delivers professional-grade performance for medium weight doors requiring medium frequency service. This 5-knuckle hinge features dual ball bearings and steel construction with steel pin for reliable operation. ANSI A8112 certified and NFPA80 compliant for fire rated door assemblies, ensuring code compliance in commercial applications.

Professional Features & Benefits

• Dual Ball Bearing Design: Two ball bearings provide smooth operation and extended service life for medium duty applications.
• 5-Knuckle Construction: Five knuckle design offers enhanced strength and stability for commercial door installations.
• Non-Rising Removable Pin: Features button tip and plug design for easy maintenance and service access when needed.
• Steel Construction: Steel leaves with steel pin provide durability and strength for demanding commercial environments.
• Fire Rating Compliance: Meets NFPA80 requirements for use on fire rated door assemblies ensuring life safety code compliance.
• ANSI Certification: ANSI A8112 certified for quality assurance and specification compliance in commercial projects.
• Reversible Hole Pattern: Available with reversible hole pattern option for flexible installation requirements.
• Multiple Finish Options: Available in USP, US3, US4, US10, US10A, US10B, and US26D finishes to match project specifications.
• Two ball bearings. Non-rising removable pin with button tip and plug.

Technical Specifications

• ANSI/BHMA: ANSIA8112
• Applications: For use on medium weight doors or doors requiring medium frequency service.
• Bearing Type: Ball Bearing
• Certifications: ANSI A8112
• Commercial/Residential: Commercial
• Duty Level: Medium Duty
• Electric Modifications: EMN (Electric Monitor Only), ETW (Electric Through-Wire Only), ETM (Electric Through-Wire with Monitoring), Quick Connect
• Electronic: No
• Features: Two ball bearings. Non-rising removable pin with button tip and plug.
• Finishes: USP, US3, US4, US10, US10A, US10B, US26D
• Fire Rating: Complies with NFPA80 requirements for use on fire rated door assemblies.
• Knuckles: Features: Two ball bearings. Non-rising removable pin with button tip and plug.
• Material: Steel with Steel Pin.
• Notes: Available with reversible hole pattern.
• Options: 3-1/2" x 3-1/2" (89 mm x 89 mm) available with reversible hole pattern.
• Series: BB1279
• Subcategory: Full Mortise Hinges

Installation & Operation

1. Review manufacturer specifications and verify door preparation requirements including door thickness, stile width, and handing as applicable to this product.
2. Use manufacturer-provided templates to mark mounting hole locations accurately on door and frame surfaces.
3. Prepare door and frame by drilling required holes and routing as specified in manufacturer instructions.
4. Install all mounting hardware and secure the device to door and frame per manufacturer torque specifications.
5. Adjust operational components for proper alignment, latching, and smooth operation throughout the full range of motion.
6. Test device operation to verify proper function and make final adjustments as needed. Refer to manufacturer documentation for complete installation details and troubleshooting.

Professional Applications

• Commercial Office Buildings
• Educational Facilities
• Healthcare Institutions
• Retail Establishments
• Industrial and Warehouse Facilities
• Multi-Tenant Residential Properties
• Government and Municipal Buildings

Fire Rating Compliance

This hinge complies with NFPA80 requirements for use on fire rated door assemblies, making it suitable for applications where fire safety codes require certified hardware components for life safety compliance.

Why Choose Hager Quality?

Hager commercial hinges are manufactured in accordance with ANSI/BHMA A156.1 standards, delivering professional-grade reliability with steel construction and dual ball bearing design. ANSI A8112 certification and NFPA80 fire rating compliance ensure dependable performance in demanding commercial applications where code compliance and operational reliability are essential.

Support Resources

• Commercial Hinges Catalog 2024 (PDF)
• Standard Hinge Locations Guide (PDF)
• Commercial Hinges Cross Reference (PDF)
• Concealed Electric Hinge Modification (PDF)
• Electric Hinge Installation Instructions (PDF)
• Size Options (PDF)