Details: Cal-Royal BB31 Full Mortise Standard Weight Two Ball Bearing Hinge, 4 1/2" x 4 1/2"

General Information

ANSI Products Standards

CAL-ROYAL HINGES complies with ANSI A156.1 (Butts and Hinges), A156.7 (Template hinge dimensions), A156.17 (Self Closing Hinges and Pivots), A 156.18 (materials and Finishes)

Plain Bearing Standard Weight

For Standard weight doors receiving low frequency service. Template hinges are furnished with all machine and wood screws

Ball Bearing Standard Weight

For Standard weight doors receiving average frequency service. Template hinges are furnished with all machine and wood screws

Ball Bearing Heavy Weight

For Heavy Doors (such as entrance and corridors) or doors receiving high frequency service. Inner edges are beveled to conform the shape of barrel and to make close fitting joints. Heavy weight template hinges are equipped with all machine and one half screws

Half Surface 5 Knuckle Template

For standard weight Kalamein doors with hollow metal jambs receiving average frequency service

Half Mortise 5 Knuckle Template

For hollow metal doors with channel iron jambs receiving average frequency service

Swing Clear

ForUSe where conditions require a completely clear opening when door is opened to 90 degree angle. Inner edges of leaves are beveled to conform to shape of barrel and to make close fitting joints. Phillips head threaded plug permits hinge to be reversed to suit application

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)

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)

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)

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 metal hollow frame)

Materials and Finishes

Wrought Steel: Satin finishes or highly polished and plated. All plated finishes have a clear baked finish

Wrought Stainless Steel

Satin finish non-ferrous, non-corrosive grade 304

Stock Finishes

Contact for stock finishes. Materials such as solid brass are available on request. Prefix SB before part #. Tips - Button: All hinges have flat button tip, except concealed ball bearing hinges which are flush

Non-removable Pins

Removable threaded set screw in barrel prevent pin from being removed when door is closed. Available on all hinges.USe N.R.P. for ordering

Special Pins

Solid brass pins, stainless steel pins and Hospital Tips are available on request. Decorative tips are also available on 4

Cal-Royal Warranty