Orca Hardware 3.5" x 3.5" x 1/4" Radius Corner Plain Bearing Commercial Hinge

The Orca 3514 is a 3-1/2 by 3-1/2 inch full mortise hinge with 1/4 inch radius corners, so it drops into a mortise routed with a 1/4 inch radius router bit or cut by a template set for 1/4 inch radius. If the existing pockets on your doors and frames have 5/8 inch radius corners or square corners, this leaf will not seat correctly. Check the corner radius in the existing mortise before ordering, because the size and the radius both have to match.

Plain bearing means the knuckles ride metal on metal with no bearing races between them. The 3514 is rated medium duty, which suits interior openings with moderate traffic, light doors, and no closer pulling on the hinge all day. High-traffic entries, heavy doors, and any opening with a door closer wear a plain bearing out faster, and that is where you move to a ball bearing hinge. In the same 3-1/2 by 3-1/2 size, the Emtek 94013 is a heavy duty ball bearing pair with square corners. In larger commercial sizes, the Don-Jo HWBB74545 is a heavy weight ball bearing full mortise hinge at 4-1/2 by 4-1/2 inches.

No. The 3514 is not ADA compliant, so keep it off openings where accessibility compliance is being inspected or where the drawings call for ADA hardware. It is a medium duty plain bearing hinge for ordinary interior commercial doors. For an opening that has to meet accessibility requirements, specify a hinge whose data sheet states compliance rather than substituting this one.

It matches if the existing hinge is 3-1/2 by 3-1/2 inches with 1/4 inch radius corners. Measure one leaf: height and width of the leaf when the hinge is open flat, and look at the corner shape. Many residential-grade doors were hung with 5/8 inch radius corners instead, and those pockets are wider at the corners than this leaf covers. If yours are 5/8 inch radius at 3-1/2 by 3-1/2, the Delaney bulk residential hinge in that size and radius is the match instead.

Not the right pick there. A closer puts constant load on the hinge every cycle, and the 3514 is a medium duty plain bearing hinge with no bearing races to take that load. Use a bearing hinge instead. The Ives 3CB1HW is a heavy weight 3-knuckle concealed bearing full mortise hinge, and the Stanley FBB191 is a 5-knuckle full mortise standard weight hinge in 4-1/2 by 4-1/2 for larger door preps.

No. The Orca 3514 is a mechanical plain bearing hinge with no conductor through the barrel. For power transfer through the hinge, the Command Access ETH-CB70 is a 3-knuckle standard weight steel base energy transfer hinge rated medium duty, and the Command Access ETH-BB68 is the 5-knuckle heavy duty steel base version. If the opening also needs door position monitoring, the Command Access ETM-CB70 adds door position sensing on a 3-knuckle steel base at medium duty, and the BEST CECB179-12C is a steel full mortise concealed bearing electrified hinge with a 12-wire quick connect, rated medium duty. Wire count and duty are the two things to confirm against the access control drawing.

The Orca 3514 carries a medium duty rating in the 3.5 inch by 3.5 inch size. Where the leaf size stays the same but the door is heavier or the traffic is higher, the Emtek 92013 is a heavy duty plain bearing hinge at 3-1/2 inch by 3-1/2 inch in plated steel, and the Emtek 94013 is a heavy duty ball bearing hinge at the same 3-1/2 inch by 3-1/2 inch size. Both are square corner, so confirm the door and frame prep before swapping into an existing radius mortise. Moving from a plain bearing to a ball bearing knuckle changes the pivot: a ball bearing hinge carries the load on bearings between the knuckles rather than on the knuckle faces themselves.

The Orca 3514 is a full mortise hinge, meaning both leaves mortise into the door and the frame. Where the frame will not take a mortise, the Hager 1129 is a half mortise plain bearing commercial hinge in 4-1/2 inch standard weight steel, rated heavy duty, and the Hager 990 STEEL is a full surface plain bearing hinge at 3 inch by 4 inch, heavy duty, with a welded tip. All three use a plain bearing, so the choice is driven by how the door and frame are prepped rather than by the bearing.

The Orca 3514 is a standard full mortise hinge with a removable pin arrangement. On an out-swinging door where the barrel is on the outside, a non-removable pin or security hinge is the usual specification. The Deltana CSB45N is a 4-1/2 inch by 4-1/2 inch square hinge with a non-removable pin, sold in pairs, and the Hager BB1168 is a non-removable pin full mortise ball bearing hinge rated heavy duty. The Deltana DE44R5TA is a 4 inch by 4 inch steel security hinge with 5/8 inch radius corners, also sold in pairs. Note that all three are larger than the 3.5 inch by 3.5 inch leaf of the Orca 3514, so the door and frame mortise has to be sized for the change.

No, and this is the most common wrong substitution on a radius corner hinge. The Orca 3514 has 1/4 inch radius corners. The Delaney 3-1/2 inch by 3-1/2 inch bulk steel residential interior hinge is the same 3-1/2 inch leaf size but is cut with a 5/8 inch radius, sold in pairs, as are the Delaney 4 inch by 4 inch exterior residential hinges. A 5/8 inch radius leaf is rounded more sharply than a 1/4 inch radius pocket and will not fill the corners of a 1/4 inch radius mortise, and a 1/4 inch radius leaf will bind on the corners of a 5/8 inch radius pocket. Match the radius, not just the leaf dimension.

Six finishes: oil-rubbed bronze, satin nickel, polished chrome, brushed chrome, polished brass, and painted black. For a property manager standardizing a building, that spread covers both the bright chrome and brass look of older common areas and the darker bronze and black hardware used on newer units, so one hinge model can carry across mixed decor without switching brands.

Sold and specified as a commercial hinge in the 3514 Series, medium duty, with a standard duty rating and 1/4 inch radius corners. The 3-1/2 by 3-1/2 size is the one you see most often on interior unit doors and closets rather than on main entrances, so in a multi-family or hospitality building it fits the in-unit openings, not the traffic doors. It is a full mortise hinge, meaning both leaves mortise into the door edge and the frame.

Zinc alloy is the material. That is fine for interior commercial openings, which is what the medium duty rating targets. For an exterior door, a door under a closer, or a heavy slab, step up to a steel-base heavy duty hinge such as the Don-Jo HWBB74545 or the Hager BB1168, which is a heavy duty full mortise ball bearing hinge with a non-removable pin.

No handing to specify. The 3514 is a full mortise butt hinge with a single size and a single corner style, so the same hinge works on a left or right hand door. The only choice on the order is finish, and there are six. Handing only enters the picture on hinges with a directional feature such as a spring hinge or an electrified hinge wired to one side.

The Orca 3514 uses a plain bearing, where the knuckles bear directly on each other, and it is rated medium duty. The Ives 3CB1 is a 3-knuckle concealed bearing full mortise hinge, also rated medium duty, and the Ives 3CB1HW is the heavy duty version of that same 3-knuckle concealed bearing full mortise design. Concealed bearing hinges place the bearing inside the knuckle so it does not show as a visible bearing ring in the barrel, which is why they get specified where the barrel appearance matters on a commercial opening. Both bearing types are full mortise, so the substitution question comes down to leaf size, corner style, and the duty the opening calls for.

They share the bearing type but not the application. The Ives 1010RP is a steel plain bearing residential hinge with square corners, medium duty, sold as a set of three. The Orca 3514 is also plain bearing and medium duty, but it is a commercial hinge with 1/4 inch radius corners at 3.5 inch by 3.5 inch. The two differences that decide the order are corner style, since square corner leaves do not seat in a radius mortise, and the commercial versus residential application. If the requirement is a residential square corner plain bearing hinge, the Ives 1010RP or the Emtek 91013 answers it; if the mortise is radius cut on a commercial opening, the Orca 3514 does.

The Orca 3514 covers the 3.5 inch by 3.5 inch size only. For a 4 inch by 4 inch commercial prep, the Delaney CH401X is a 4 inch by 4 inch commercial ball bearing hinge with square corners. At 4-1/2 inch by 4-1/2 inch, the Don-Jo HWBB74545 and HWBB84545 are heavy weight full mortise ball bearing hinges in satin chrome, and the Stanley FBB191 is a 5-knuckle full mortise standard weight hinge at 4.5 inch by 4.5 inch. Leaf width generally follows door thickness and door width, so size the hinge to the existing mortise rather than assuming the 3.5 inch prep carries over.

The Orca 3514 is a plain bearing hinge without a self-closing mechanism. Where the door has to close itself through the hinge rather than through a separate closer, the Stanley 2060R is a full mortise spring hinge with square corners at 4.5 inch by 4.5 inch on a ferrous steel base, rated heavy duty. For a door that has to swing both directions, the BEST DAP-3 is a heavy duty double acting pivot for commercial interior doors. Both change the leaf size and the door prep from the 3.5 inch by 3.5 inch mortise the Orca 3514 fits.

No. The Orca 3514 is a medium duty commercial hinge in zinc alloy. Detention openings call for purpose-built hardware: the BEST BB855 is a heavy-duty steel double weight concealed ball bearing prison hinge, and the Stanley BB855 is a double weight prison hinge at 5 inch by 6 inch furnished with no holes and not swaged, rated heavy duty. The Hager 990 STEEL is a full surface prison hinge at 3 inch by 4 inch with a welded tip. Double weight construction and welded or non-removable tips are the features that separate these from a standard commercial hinge.

The Orca 3514 is a zinc alloy hinge. Where a ferrous base is not wanted, the McKinney T2314 is a non-ferrous hinge in standard weight with 5 knuckles, rated medium duty, which is the same duty level the Orca 3514 carries. Non-ferrous base material is the specification point on exterior and wash-down openings, and it is separate from the plated finish, which does not change the base metal underneath.

Three per door is the normal count for a 3-1/2 by 3-1/2 hinge on an interior commercial opening, one at the top, one at the bottom, and one centered between them. Order in multiples of three and pick the same finish across the opening. Since the 3514 comes in six finishes, decide the finish for the whole floor before ordering so replacements later still match.

The Orca 3514 is a conventional full mortise plain bearing hinge with a visible barrel. Where the bearing and barrel need to be minimized, the Hager 920 is a full mortise concealed plain bearing hinge in 2-knuckle steel construction, rated medium duty, which is the same duty level as the Orca 3514. The McKinney SQ3331 is another 2-knuckle option at 4-1/2 inch by 4-1/2 inch with a square barrel where the barrel is meant to be seen as a design element rather than hidden.