Hager BB1279 4" x 4" Ball Bearing, Five Knuckle, Steel Hinge

Hager BB1279 - Full Mortise - Five Knuckle - Ball Bearing -Standard Weight

For use on medium weight doors or doors requiring medium frequency service

Hinge Size: 4" x 4" (102 x 102 mm)

Material: Steel with Steel pin- ANSI A8112

Description: Non-rising removable pin withbutton tipand plug Two ball bearings

Gauge of Metal: 0.129

Hole Count: 8

Screw Size:Wood Screws: 1-1/4 x 12 - Machine Screws:1/2 x1 2-24       

Packaging: Sold as individual units (1 EACH), with all wood & half machine screws 

Finishes: US10A - Antique Bronze, US10B - Oil Rubbed Bronze, US10D - Black Nickel, Oiled, US15 - Satin Nickel, US15A - Antique Satin Nickel, US26D - Satin Chrome, US26 - Bright Chrome, US3 - Bright Brass, USP - Prime Coat, US4 - Satin Brass, US5 - Satin Brass Oxidized

Ball Bearing (BB) Ball bearings are engineered to throw the knuckle

weight against specially hardened steel raceways, which ride on

the bearing surfaces. The one-piece cup protects the bearings from

moisture and dust. The cup supports no weight so it is not subjected

to functional friction, pressure or wear. Lateral wear is minimized

because the pin is held against thrust by the hardened steel top and

bottom raceways. The bearing units are securely press-fit to the leaf

knuckle to prevent loss when the hinge is disassembled.

Related Categories

• Five Knuckle Ball Bearing