Hager BB1129 5 US26D Half Mortise Ball Bearing Hinge

Product Description

The HAGER BB1129 5 US26D is a half mortise ball bearing hinge built for standard-weight door applications. This hinge features a 5-knuckle construction with ball bearing pivots that reduce friction and support smooth, consistent door swing over the life of the installation. Measuring 5 inches, it is finished in satin chrome (US26D) for a clean, low-sheen appearance suited to commercial and residential door frames. Fabricated from steel, this hinge is intended for installation by finish carpenters, door hardware specialists, and commercial contractors working on interior door assemblies.

The BB1129 5 US26D is appropriate for standard-weight interior doors in both residential and light commercial settings. The half mortise design means one leaf is mortised into the door frame while the other mounts to the surface of the door, reducing the amount of material removed during installation. This configuration is common in hollow metal frame applications and retrofit installs where full mortising of the door is not practical or desired.

Key Features

• Half mortise design allows surface mount on door with mortised frame leaf
• Ball bearing pivots reduce friction for smooth, consistent door operation
• 5-knuckle construction provides added strength and stability along the hinge barrel
• Steel construction suited for standard-weight door applications
• Satin chrome finish (US26D) resists fingerprints and complements modern hardware
• 5-inch hinge size appropriate for taller or heavier standard-weight door panels

Compatibility

Designed as an OEM-style replacement or new-installation hinge for standard-weight interior doors requiring a half mortise ball bearing hinge in a 5-inch size.

Installation Notes

Installation should be performed by a qualified finish carpenter or door hardware technician familiar with mortise hinge applications. Power down any electric door hardware and confirm the door is properly supported before removing existing hinges or seating new ones. Use a sharp chisel and appropriate router template for clean mortise cuts on the frame leaf. Follow applicable building codes and manufacturer door prep specifications for hinge quantity and placement on the door assembly.