BEST FBB248 Steel Full Mortise...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$67.68
BEST BEST FBB248 Steel Full Mortise Ball Bearing Standard Weight Swing Clear Hinge For Square Edge Doors BEST-FBB248

BEST FBB248 Steel Full Mortise Ball Bearing Swing Clear Hinge for Square Edge Doors

(No reviews yet) Write a Review

Model: BEST-FBB248-652-4.5
Selected Finish is

In Stock (leaves warehouse same day if ordered before 3pm ET)

$67.68
Adding to cart… The item has been added
Free Shipping on orders over $199
We price match and offer bulk discounts! Click Add to Quote. It's quick and easy.
✨
Earn points with this purchase! You can redeem points for giftcards, iPads, XBox's and more. View Rewards
Free Keying on all locks
You may also like

BEST FBB248 Steel Full Mortise Ball Bearing Swing Clear Hinge for Square Edge Doors

Professional Swing Clear Hinge Solution for Maximum Door Clearance

The BEST FBB248 is a standard weight swing clear hinge engineered for square edge doors requiring maximum clearance and accessibility. This full mortise ball bearing hinge features steel construction with two permanently lubricated non-detachable ball bearings for smooth operation. The swing clear design allows doors to swing completely clear of the opening when opened 90°, making it ideal for applications where space is limited or accessibility is a priority.

Professional Features & Benefits

  • Swing Clear Design: Allows doors to swing completely clear of the opening when opened 90° for maximum clearance and enhanced accessibility.
  • Ball Bearing Operation: Equipped with two permanently lubricated non-detachable ball bearings for smooth, long-lasting performance.
  • Steel Construction: Standard weight steel construction provides reliable durability for commercial applications.
  • Full Mortise Application: Designed specifically for full mortise installation on square edge doors for professional appearance.
  • Reversible Design: Features reversible flush tips and pins for flexible installation and handing requirements.
  • Hospital Tip Option: Can be furnished with hospital tips (HT) for specialized healthcare applications.
  • Versatile Application: Ideal for both remodeling projects and new construction installations.

Technical Specifications

  • Bearing Type: Ball Bearing
  • Commercial/Residential: Commercial
  • Corner Style: Square Corners
  • Department: Door Hardware
  • Duty Level: Medium Duty
  • Hinge Pin Type: Removable
  • Hinge Type: Full Mortise
  • Knuckles: 5
  • Product Category: Door Hinges and Pivots
  • Product Group: Door Hinges and Pivots
  • Product Model: FBB248
  • Product Subgroup: Surface and Mortise Hinges
  • Product Type: Full Mortise Hinges
  • Series: Architectural Hinges
  • Subcategory: Hinges

Installation & Operation

  1. Review manufacturer specifications and verify door preparation requirements including door thickness, stile width, and handing as applicable to this product.
  2. Use manufacturer-provided templates to mark mounting hole locations accurately on door and frame surfaces.
  3. Prepare door and frame by drilling required holes and routing as specified in manufacturer instructions.
  4. Install all mounting hardware and secure the device to door and frame per manufacturer torque specifications.
  5. Adjust operational components for proper alignment, latching, and smooth operation throughout the full range of motion.
  6. Test device operation to verify proper function and make final adjustments as needed. Refer to manufacturer documentation for complete installation details and troubleshooting.

Professional Applications

  • Healthcare Facilities Requiring ADA Compliance
  • Educational Institution Accessibility Upgrades
  • Commercial Office Building Renovations
  • Retail Establishments with Space Constraints
  • Multi-Tenant Residential Properties
  • Government and Municipal Buildings
  • Industrial Facilities with Equipment Access Requirements

Why Choose BEST Quality?

BEST hinge products deliver professional-grade reliability with steel construction and permanently lubricated ball bearings for demanding commercial applications. The medium duty rating and 5-knuckle design provide dependable performance where accessibility and smooth operation are essential. Engineered for demanding commercial applications where dependable performance is essential.

Product Specs

Subcategory:
Hinges
Series:
Architectural Hinges
Hinge Type:
Full Mortise
Knuckles:
5
Bearing Type:
Ball Bearing
Corner Style:
Square Corners
Product Group:
Door Hinges and Pivots
Product Subgroup:
Surface and Mortise Hinges
Product Type:
Full Mortise Hinges
Duty Level:
Medium Duty
Commercial/Residential:
Commercial
Hinge Pin Type:
Removable
Product Model:
FBB248
Product Category:
Door Hinges and Pivots
Department:
Door Hardware

BEST BEST-FBB248-652-4.5 – Frequently Asked Questions

1) What does a swing clear hinge like the BEST FBB248 actually do for a doorway width?
A swing clear hinge carries the door leaf out of the opening as it rotates. At 90 degrees open, the FBB248 puts the door completely clear of the frame, so the usable clear width is the full opening instead of the opening minus the door thickness. That is the reason it gets specified on healthcare corridors, restroom doors, and older narrow openings where a gurney, a wheelchair, or a cart has to get through. If your existing standard hinge is stealing an inch and three-quarters of clear width, this is the swap that recovers it without moving the frame.
2) Will the FBB248 swing clear hinge work on a beveled edge door?
No. The FBB248 is built for square edge doors, and its leaf geometry is cut for that edge. Put it on a beveled edge door and the hinge will not sit right in the mortise. Check the door edge before ordering: square edge takes this one, a beveled edge needs the beveled edge version of the swing clear hinge instead. Matching corner prep matters too, since this hinge has square corners rather than radius corners.
3) Is the FBB248 heavy enough for a high traffic door, or do I need a heavy weight hinge?
The FBB248 is a standard weight, medium duty steel hinge with two permanently lubricated ball bearings. That covers normal commercial traffic on a standard hollow metal or wood door. For a heavy or continuously abused leaf, step up to a heavy weight hinge such as the McKinney TCA3386 or the Hager WTBB1168, both listed heavy duty. Ball bearings are the part that matters for cycle life here, and this hinge has them.
4) I need a standard commercial hinge, not a swing clear one. What should I order instead?
Only buy swing clear if you actually need the extra clear width, because the leaf geometry is different and it is not the part for a routine hinge replacement. For a straight 4-1/2 by 4-1/2 square corner five knuckle full mortise ball bearing hinge, look at the Don-Jo BB74545 in steel, the BB94545 in stainless steel, or the McKinney TCA2314. All are standard duty full mortise hinges in that size.
5) Which hinge carries power to an electrified lock if the BEST FBB248 does not?
For an opening that needs current transferred through the hinge, the ACSI 5BB1 is a five knuckle ball bearing full mortise hinge, 4-1/2 inch by 4-1/2 inch, with a concealed electric through-wire, four wire in 28 gauge. It shares the FBB248 bearing type and full mortise format but is a conventional leaf, so it does not deliver the swing clear geometry. On an accessible opening with an electrified lock, plan the electric transfer on one hinge and swing clear on the others.
6) Which swing clear hinge should be used on a heavier door than the BEST FBB248 is built for?
The FBB248 is a medium duty swing clear hinge. For a heavier leaf, the Hager 1260 is also a full mortise swing clear hinge, in heavy duty, with a five knuckle plain bearing design. The tradeoff is the bearing: the FBB248 runs on ball bearings, while the 1260 is a plain bearing hinge. Confirm the door weight and frequency against the leaf size before choosing.
7) Can a Don-Jo BB74545 be used in place of a BEST FBB248 on an ADA clearance opening?
Not for the clearance itself. The FBB248 uses a swing clear design so the door swings completely clear of the opening at 90 degrees, which is what recovers the extra inches of clear width on a wheelchair-accessible opening. The Don-Jo BB74545 is a conventional full mortise ball bearing hinge in 4-1/2 inch by 4-1/2 inch with a square corner and five knuckles; the leaf still sits in the opening when the door is open. It substitutes for the FBB248 as a bearing hinge, not as a clearance solution.
8) What replaces a BEST FBB248 when the door has to clear applied trim or a deep reveal?
Swing clear geometry solves clearance at the frame, not offset. Where the leaf has to reach past trim or a deep reveal, the Hager WTBB1168 is a wide throw full mortise ball bearing hinge, 4-1/2 inch by 6 inch, heavy weight with five knuckles. The wider leaf throws the door further off the frame. The FBB248 is a 4-1/2 inch by 4-1/2 inch standard weight swing clear hinge, so the two solve different clearance problems and are not interchangeable.
9) If a door frame is prepped for a 4-1/2 by 4 inch hinge, does the BEST FBB248 fit?
No. The FBB248 comes in 4-1/2 inch by 4-1/2 inch, which needs a full 4-1/2 inch leaf width on the frame. For a 4-1/2 inch by 4 inch prep, the Don-Jo BB74540 is a full mortise ball bearing hinge in 4-1/2 inch by 4 inch, satin chrome, standard duty. It drops into the narrower prep but is a conventional hinge, so plan on a frame or door change if swing clear is required.
10) What size and finish does the BEST FBB248 hinge come in?
It is sold 4-1/2 by 4-1/2 inches in 652 satin chrome over steel. That is the standard commercial hinge size for a 1-3/4 inch door on a standard frame, so it drops into the common mortise prep. 652 is the satin chrome steel finish, which is what most commercial openings are already running, so it will match the other doors in a typical office or institutional building.
11) Do I have to order a left hand and a right hand version of this hinge?
No, one part covers both hands. The FBB248 uses reversible flush tips and pins, so the same hinge handles a left hand or right hand opening. For a property manager stocking spares across a building, that means one line item instead of two.
12) Can I get the FBB248 with hospital tips for a behavioral health or patient room door?
Yes, hospital tips (HT) are available on the FBB248. Hospital tips angle the barrel ends so there is no flat ledge to catch clothing, IV lines, or a ligature point, which is why they get specified on patient room and behavioral health doors. Call the HT option out on the order, since the base hinge ships with the standard flush tips.
13) What is the difference between a ball bearing hinge and a plain bearing hinge for a commercial door?
Ball bearings sit between the knuckles and carry the door weight on a rolling surface, so the door swings smoothly and the hinge holds up under repeated use. Plain bearing is metal on metal and is meant for lighter, lower traffic openings. The FBB248 is ball bearing. If you are looking at a plain bearing swing clear instead, the Hager 1260 is a plain bearing swing clear hinge. For a door with a closer on it, a ball bearing hinge is the right call.
14) Is the FBB248 suitable for retrofitting an existing door, or only new construction?
Both. It is a full mortise hinge, so it installs into the routed mortise in the door edge and the frame rebate the same way a standard commercial hinge does. On a retrofit, the deciding factor is not the mortise, it is the door edge: square edge only, square corners, 4-1/2 by 4-1/2. If your existing hinge pocket matches that, the swap is direct.
15) What is the difference between the BEST FBB248 and the Stanley Security CB1960R?
Both are full mortise hinges in the Architectural Hinges series and both are rated medium duty. The FBB248 is a swing clear hinge with ball bearings, five knuckles and square corners, and a removable pin. The CB1960R is a concealed bearing standard weight hinge, so the bearings are hidden inside the barrel rather than showing as separate races between the knuckles. Choose the FBB248 where the door has to clear the opening; the CB1960R suits a standard opening where the concealed barrel appearance is wanted.
16) Is a Hager 1279 an equivalent to the BEST FBB248?
They share a medium duty rating and a five knuckle full mortise format, but they are not equivalents. The Hager 1279 is a plain bearing commercial hinge; the FBB248 runs on two permanently lubricated non-detachable ball bearings and uses a swing clear leaf so the door clears the opening at 90 degrees. The 1279 fits a standard opening at moderate traffic. Where the specification calls out swing clear or ball bearing, the 1279 does not meet it.
17) What is the heavy weight equivalent when the BEST FBB248 is specified but the door is a high-traffic entrance?
For a high-traffic leaf on a standard opening, the McKinney TCA3386 is a square corner five knuckle full mortise hinge, 4-1/2 inch by 4-1/2 inch, in heavy weight. It matches the FBB248 square corner prep and 4-1/2 inch by 4-1/2 inch size, so the mortise carries over, but it is a conventional hinge without the swing clear leaf. Where the entrance also has to hold the accessible clear width, keep the swing clear FBB248 and size the door and closer to its medium duty rating instead.
18) Can a Hager 1541 be used instead of a BEST FBB248 in an apartment building?
Only on unit interior doors, not on the openings the FBB248 is meant for. The Hager 1541 is a full mortise plain bearing residential hinge in stainless steel with a five knuckle design. The FBB248 is a commercial ball bearing swing clear hinge with a removable pin and square corners, built for corridor and entry openings where the door has to clear the frame. Using the 1541 on a corridor door gives up both the bearing and the clearance.
19) How do the McKinney TCA2314 and TCA2317 compare to the BEST FBB248 for standardizing a facility?
The McKinney TCA2314 and TCA2317 are both square corner five knuckle full mortise hinges in 4-1/2 inch by 4-1/2 inch, standard duty. They share the FBB248 square corner prep, five knuckle count and 4-1/2 inch by 4-1/2 inch size, so the door and frame preparation is common across all three. The difference in service is the leaf: the FBB248 is the swing clear hinge, so a facility can standardize the prep facility-wide and specify the FBB248 only on the openings that have to hold accessible clear width.
20) Can I take the door down without unscrewing the hinges?
Yes. The FBB248 has a removable pin, so you drive the pin out and lift the leaf off with the hinge leaves still fastened to the door and frame. That is what you want for a remodel where the door comes off for painting or for moving equipment through, and it keeps the frame prep untouched.
21) How many hinges do I need per door and are the screws included?
Hinges are sold per hinge, so count your openings before ordering. The FBB248 mounts with standard full mortise wood or machine screws depending on your door and frame, and installation follows the BEST templates for hole location. The manufacturer installation guide and the hinge size chart are published with the product, and those are what to work from for the prep.
How fast can I get the BEST BEST-FBB248-652-4.5 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 BEST BEST-FBB248-652-4.5 come with a warranty?
Absolutely. The BEST BEST-FBB248-652-4.5 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 BEST BEST-FBB248-652-4.5?
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
Why buy the BEST BEST-FBB248-652-4.5 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
!