Hager HTBB1279 4-1/2" x 4-1/2" Ball Bearing Hinge w/Hospital Tip

Full Mortise -

Five Knuckle - Ball*Bearing -Standard Weight -*Hospital Tip

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

Hinge Size:4-1/2" x 4-1/2" (114 x 114 mm)Material:Steel with Steel pin- ANSI A8112

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

Gauge of Metal:0.134

Hole Count: 8

Screw Size:Wood Screws:*1-1/4 x 12 - Machine*Screws:1/2x 12-24        Packaging:Sold as individual units (1 EACH), with all wood & half machine screws

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.

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Hospital tips (HT)are used primarily for security areas in hospitals and

in prisons. This tip prevents hanging any objects on the tip of the

hinge. Hager provides all hospital tipped hinges with an NRP set screw

in the center of the knuckle, two cross pins, stainless steel hinge pin,

and an oil port for lubrication purposes. If the hinge is ball bearing,

the components used for the bearing are made of stainless steel.

Related Categories

• Five Knuckle Ball Bearing