Don-Jo BB94545 Full Mortise Ba...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$97.10
$85.29
Don-Jo BB94545 Full Mortise Ball Bearing Hinge 4-1/2" x 4-1/2" Stainless Steel, Square Corner

Don-Jo BB94545 Full Mortise Ball Bearing Hinge 4-1/2" x 4-1/2" Stainless Steel, Square Corner

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Model: BB94545-630
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$97.10
$85.29
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Don-Jo BB94545 Full Mortise Ball Bearing Hinge — 4-1/2" x 4-1/2" Stainless Steel, Square Corner

The Don-Jo BB94545 is a full mortise ball bearing hinge measuring 4-1/2" x 4-1/2", constructed from stainless steel with a 630 finish for lasting corrosion resistance. Designed for medium weight doors in commercial applications, this hinge features a 5-knuckle configuration, square corners, and an ANSI A5112 template-compliant layout for straightforward, precise installation. With a gauge of 0.134 and standard duty rating, the BB94545 delivers reliable, smooth operation suited to average-frequency commercial door environments. A non-removable pin (NRP) option is also available for enhanced security — specify NRP as a prefix when ordering.

Key Features

  • Full Mortise Design: Full mortise construction integrates cleanly into door and frame for a flush, professional appearance in commercial installations.
  • Precision Ball Bearing Operation: Ball bearing pivot mechanism ensures smooth, consistent swing performance ideal for medium weight doors under average-frequency use.
  • 4-1/2" x 4-1/2" Dimensions: Standard commercial hinge size providing broad compatibility with medium weight door applications.
  • Stainless Steel Construction (Finish 630): Gauge 0.134 stainless steel body with 630 finish delivers corrosion resistance and long-term durability in demanding environments.
  • 5-Knuckle Configuration: Five-knuckle design provides enhanced strength and stability across the full range of door motion.
  • Square Corner Style: Square corner profile meets standard commercial door and frame preparation requirements for easy, code-compliant installation.
  • ANSI A5112 Template Compliant: Conforms to ANSI A5112 template specifications, ensuring compatibility with industry-standard door preparations.
  • Non-Removable Pin Option: Optional NRP (non-removable pin) configuration available for added security — specify NRP as a prefix at time of ordering.
  • Commercial Grade: Standard duty rating engineered for commercial door hardware applications with average-frequency operation cycles.

Certifications & Compliance

  • ANSI A5112 Compliant
  • Commercial Grade — Standard Duty

Technical Specifications

  • Subcategory: Hinges
  • Product Group: Door Hinges and Pivots
  • Product Subgroup: Full Mortise Hinges
  • Product Type: Full Mortise Hinges
  • Commercial/Residential: Commercial
  • Corner Style: Square corners
  • Duty Level: Standard Duty
  • Knuckles: 5
  • Product Size: 4.5" x 4.5"
  • Product Category: Door Hinges and Pivots
  • Department: Door Hardware

Typical Applications

  • Commercial Office Buildings
  • Educational Facilities
  • Healthcare Institutions
  • Retail Establishments
  • Industrial and Warehouse Facilities
  • Multi-Tenant Residential Properties
  • Government and Municipal Buildings

Why Don-Jo BB94545?

Don-Jo full mortise ball bearing hinges are built to commercial standards, combining stainless steel construction at 0.134 gauge with a 5-knuckle ball bearing mechanism for smooth, dependable performance in average-frequency door applications. The BB94545's ANSI A5112 template compliance and square corner profile make it a reliable, drop-in solution for standard commercial door preparations where consistent quality and professional finish are essential.

Manufacturer Resources

DON-JO Hinges

Product Specs

Subcategory:
Hinges
Product Group:
Door Hinges and Pivots
Product Subgroup:
Full Mortise Hinges
Product Type:
Full Mortise Hinges
Bearing Type:
Ball Bearing
Commercial/Residential:
Commercial
Corner Style:
Square corners
Duty Level:
Standard Duty
Knuckles:
5
Product Model:
BB94545
Product Size:
4.5" x 4.5"
Product Category:
Door Hinges and Pivots
Product Substrate:
Steel
Department:
Door Hardware

Don-Jo BB94545-630 – Frequently Asked Questions

1) Will the Don-Jo BB94545 hinge drop into my existing 4-1/2 inch square corner door prep?
Yes, if the prep is a standard 4-1/2 x 4-1/2 square corner mortise. The BB94545 measures 4.5 inches by 4.5 inches with square corners, which is the standard commercial door and frame prep. If your existing door and frame are routed with radius corners instead, this hinge will not seat cleanly and you want a radius corner hinge for that opening.
2) Is the Don-Jo BB94545 heavy enough for a solid core commercial entry door?
The BB94545 is a standard duty ball bearing hinge, built for medium weight doors in average-frequency commercial openings: offices, classrooms, retail back-of-house, multi-tenant residential corridors. For a high-traffic entrance or a heavy door, step up to a heavy weight hinge such as the McKinney TCA3386 in the same 4-1/2 by 4-1/2 square corner size, or the Hager WTBB1168 if you also need wide throw.
3) How do I order the Don-Jo BB94545 with a non-removable pin?
NRP is an ordering option, not a separate part. Pick the Non-Removable Pin choice when you select the hinge; the standard build ships with a removable pin, and the NRP build carries the set screw that locks the pin in place. Order NRP on any out-swinging exterior or secured door where the hinge barrel is exposed on the unsecured side, so the pin can't be driven out.
4) Do I have to order left hand and right hand versions of the Don-Jo BB94545?
No. A full mortise butt hinge like the BB94545 is non-handed, so the same hinge works on a left hand or right hand door. Mount it with the barrel to the swing side and it's correct either way. That is one of the reasons full mortise hinges are the easy choice when you are standardizing a building: one part number covers every door swing.
5) Does the Don-Jo BB94545 use a standard hinge template so it matches hinges already in my building?
It follows the ANSI A5112 template, which is the standard screw hole pattern for a 4-1/2 by 4-1/2 full mortise hinge. Any other A5112 template hinge in that size lands on the same holes, so you can replace one worn hinge in an opening without redrilling the frame or the door edge. The McKinney TCA2314 and TCA2317 are square corner 4-1/2 by 4-1/2 standard duty hinges in the same size class if you are matching to McKinney elsewhere in the building.
6) I need a hinge that lets a wheelchair or gurney clear the full door opening. Is the BB94545 the right one?
No. The BB94545 is a conventional full mortise butt hinge, so the open door leaf still sits in the opening and eats a couple of inches of clear width. For a healthcare corridor or an accessible route where you need the full width, use a swing clear hinge instead, such as the BEST CB248 for square edge doors or the Hager 1260. Those swing the door completely out of the opening.
7) An access control device has to be powered through the door - can the BB94545 carry the wiring?
No. The BB94545 is a mechanical ball bearing full mortise hinge with a 5 knuckle configuration and an NRP option; it has no wire path through the barrel. For a powered electric strike, exit device or electrified lock, the ACSI 5BB1 is the substitute: a 5 knuckle ball bearing full mortise hinge in 4-1/2 by 4-1/2 with concealed electric through-wire, 4 wire at 28 gauge, in the 1100 Series. It is the same size, bearing type and knuckle count as the BB94545, so a door and frame already prepped for a 4-1/2 inch full mortise hinge takes it - the door and frame do need the wire raceway drilled.
8) What is the closest equivalent to the Don-Jo BB94545 4-1/2 x 4-1/2 ball bearing hinge from another manufacturer?
The McKinney TCA2314 is the nearest match in form and duty: it is a square corner, 5 knuckle full mortise hinge in 4-1/2 by 4-1/2 with a standard duty rating, the same size, corner style, knuckle count and duty level the BB94545 carries. The McKinney TCA2317 is a second standard duty square corner 5 knuckle full mortise hinge in the same 4-1/2 by 4-1/2 size. Either drops into a door and frame prepped for a standard 4-1/2 inch square corner full mortise hinge, which is what the BB94545 template layout assumes.
9) The door is heavier than standard duty - what hinge should be used instead of a BB94545?
The BB94545 is a standard duty ball bearing hinge for medium weight commercial doors. For a heavier leaf, the McKinney TCA3386 is a heavy weight version of the same basic hinge: square corner, 5 knuckle, full mortise, 4-1/2 by 4-1/2, rated heavy duty, so the door and frame prep stays the same size. The BEST FBB212 is a ball bearing heavy weight pivot reinforced hinge for square edge doors, and the BEST CB223 is a stainless steel concealed bearing heavy weight pivot reinforced hinge for beveled edge doors - pivot reinforced hinges carry the leaf load at the top of the door, so check the edge bevel before choosing between those two. The Stanley Security CB199 is a heavy weight full mortise concealed bearing hinge in the Architectural Hinges series.
10) Is a plain bearing hinge an acceptable substitute for the Don-Jo BB94545?
Not for the same traffic. The BB94545 uses a ball bearing pivot, which is what lets it run smoothly on average-frequency commercial doors. The Hager 1279 is a plain bearing full mortise commercial hinge with 5 knuckles, rated medium duty, and the Hager 1541 is a plain bearing full mortise residential hinge in stainless steel with a 5 knuckle design. Both are full mortise 5 knuckle hinges that look like the BB94545 in the door, but a plain bearing carries the knuckle load on metal-to-metal bearing surfaces rather than a bearing race - specify by bearing type, not by the 5 knuckle profile.
11) What finish does the Don-Jo BB94545 hinge come in, and will it match my other 630 hardware?
One finish only: 630, satin stainless steel. That is the standard commercial satin stainless finish, so it matches 630 levers, closers, and exit device trim already on the openings. The hinge body is stainless steel, not plated steel, so the finish holds up in damp or coastal conditions rather than rusting through.
12) Is the Don-Jo BB94545 a ball bearing hinge or plain bearing, and does it matter for my doors?
Ball bearing. The bearings sit between the knuckles and carry the door's weight, so the door swings smoothly and the knuckles don't wear oval over thousands of cycles. Plain bearing hinges like the Hager 1279 or Hager 1541 are fine on light interior doors that see occasional use, but on a door with a closer on it the closer's spring pressure rides the hinge constantly, and that is where ball bearing pays for itself.
13) How many hinges do I need per door with the Don-Jo BB94545?
Standard practice on a commercial opening is three hinges for a door up to 7 feet 6 inches tall, and one more for each additional 30 inches of height. The BB94545 is sold as a single hinge, so order three per typical 7 foot commercial door. If you want the NRP security option, order it on all three, not just the top one.
14) Is the Don-Jo BB94545 stainless steel all the way through or just plated?
Solid stainless steel, at 0.134 gauge, with the 630 satin stainless finish. That matters on exterior doors, pool and locker areas, kitchens, and coastal buildings, where a plated steel hinge eventually rusts at the knuckles. Several of the alternatives in this size, like the BEST 1900R, are steel bodied rather than stainless.
15) Will the Don-Jo BB94545 work on a beveled edge door?
The BB94545 is templated for standard square edge commercial door prep with square corners. For a beveled edge door with heavy weight requirements, the BEST CB223 is a stainless steel pivot reinforced hinge built specifically for beveled edge doors. Match the hinge to the edge profile the door was machined with, or the leaf will not sit flat in the mortise.
16) What is the difference between a ball bearing hinge like the BB94545 and a concealed bearing hinge?
Both run on bearings; the difference is whether the bearing shows in the knuckle. The BB94545 is a ball bearing hinge with a 5 knuckle configuration, so the bearing races sit visibly between knuckles. The BEST 1900R is a steel full mortise concealed bearing standard weight hinge with a removable pin, rated medium duty, and the Stanley Security CB1960R is a full mortise concealed bearing standard weight hinge, also medium duty, both in the Architectural Hinges series. Concealed bearing hinges present an unbroken knuckle line, which matters where the hinge is in view; the BB94545 also offers a non-removable pin option specified as an NRP prefix, where the 1900R is built with a removable pin.
17) Which hinges are stainless steel rather than plated steel for a corrosive or wash-down environment?
The BB94545 is stainless steel with a 630 satin stainless finish, which is what carries its corrosion resistance. Among the comparable hinges, the BEST CB223 is stainless steel - a concealed bearing heavy weight pivot reinforced hinge for beveled edge doors - and the Hager 1541 is a plain bearing full mortise residential hinge with stainless steel construction. The BEST 1900R and BEST CB248 are both steel full mortise concealed bearing hinges, so substrate is the distinction to hold to when the environment, not the door weight, is driving the choice.
How fast can I get the Don-Jo BB94545-630 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Don-Jo BB94545-630 come with a warranty?
Absolutely. The Don-Jo BB94545-630 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Don-Jo BB94545-630?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
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