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DESIGN HARDWARE BB5 STANDARD WEIGHT BALL BEARING HINGES
Specifications:
ANSI: Meets ANSI A 156.2 - Dimensions and tolerances conform to ANSI - A156.7
Gauge of Metal: .129 for 4” x 4”, .134” for 4.5” x 4.5”, .145” for 5” x 4-1/2” sizes
Base Material: Steel (ANSI A8112) or Stainless Steel (Grade 304 standard) (ANSI A5112)
Marine Grade 316 US32D Stainless Steel also available
Design & Templating: 5 Knuckle Design & Templated hole locations for wood or metal doors & frames
Fire Door Use: Approved for most types of fire doors up to 4’ x 10’, 8’ x 10’ pairs - Refer to NFPA80
Swaging: 1/16” Swage standard which provides 1/16” of clearance between leaves
Security NRP: NRP - Non removable pin available upon request for most sizes
Pin & Tip: Equipped with easily seated non-rising pin with button head & plug
Radius Corner: 1/4” and 5/8” Radius Corner available and in stock for 4” x 4” sizes only
Bearings: Each hinge has 2 sets of maintenance free non detachable ball bearings
Electrification: Concealed thru wire and monitoring options available, See electrified section
Fasteners: Each box of 3 hinges contains full set of machine and wood screws
Warranty: Limited Lifetime Warranty
RESOURCES & DOWNLOADS
Manufacturer Resources
Product Specs
- Series:
- BB5 Series
- Features:
- Ball Bearing Reduces Friction to Extend Lifetime of Hinge, For Medium Weight Doors of Average Frequency Use, More Durable than Standard Hinges
- Product Group:
- Door Hinges and Pivots
- Product Subgroup:
- Full Mortise Hinges
- Product Type:
- Ball Bearing Hinges
- Subcategory:
- Residential Hinges
- ANSI/BHMA:
- ANSI A 156.2, ANSI - A156.7
- Duty Level:
- Medium Duty
- Bearing Type:
- Ball Bearing
- Commercial/Residential:
- Commercial
- Knuckles:
- 5
- Product Size:
- 4" x 4"
- Department:
- Door Hardware
Design Hardware DH-BB5-4X4-26D – Frequently Asked Questions
1) Will the Design Hardware BB5 4 x 4 hinge work on a fire rated door?
Yes. The BB5 ball bearing hinge is approved for most types of fire doors up to 4' x 10' singles and 8' x 10' pairs, per NFPA 80. If your opening is larger than that, the approval doesn't cover it.
2) Do I need square corners or radius corners on a 4 x 4 ball bearing hinge?
Match the corner to the hinge pocket already routed in your door and frame. Hollow metal frames are usually prepped with a radius; wood doors are typically square. The BB5 4 x 4 is offered square, 1/4 inch radius, and 5/8 inch radius, and the radius corner options are only made in the 4 x 4 size.
3) Is a 4 x 4 standard weight ball bearing hinge heavy enough for a commercial office door?
The BB5 is a medium duty, commercial grade hinge built for medium weight doors in average frequency use, with two sets of maintenance free non detachable ball bearings per hinge. For a high traffic entrance or a heavy door such as a thick fire rated or lead lined leaf, step up to a heavy weight hinge instead.
4) Will these hinges drop into existing door and frame prep without re-drilling?
Hole locations are templated for wood or metal doors and frames, and the leaves carry the standard 1/16 inch swage that leaves 1/16 inch clearance between leaves. On a standard templated 4 x 4 prep with matching corner style, they go straight in.
5) Can I get these ball bearing hinges with a non removable pin for an out-swinging exterior door?
NRP, a non removable pin, is available on request for most sizes of the BB5. That's the version you want on an outswing door where the hinge barrel is on the exterior. Standard hinges ship with an easily seated non-rising pin with button head and plug.
6) What is the equivalent ball bearing hinge for a 4-1/2 inch door prep instead of a 4 inch one?
The Design Hardware BB5 standard weight ball bearing hinge is built to a 4 inch by 4 inch size, so it will not fill a 4-1/2 inch hinge pocket. For that prep, the Orca Hardware SSB4545 is a 4-1/2 inch by 4-1/2 inch square corner ball bearing commercial hinge, also rated medium duty. Confirm the existing mortise height and corner shape before ordering, since the leaf footprint has to match the routed pocket.
7) Which ball bearing hinge works on hollow metal frames with radius corner prep?
The Design Hardware BB5 in 4 inch by 4 inch is stocked with 1/4 inch and 5/8 inch radius corners as well as square corners, so it can follow a radiused hollow metal frame prep. The Orca Hardware SSB4545 is a square corner hinge in the 4-1/2 inch by 4-1/2 inch size, which suits square prep. Check the corner radius on the frame before you pick between them.
8) What is the metal thickness of the 4 x 4 BB5 hinge?
Gauge of metal on the 4 inch x 4 inch BB5 is .129. The larger sizes in the series run thicker, .134 on 4.5 x 4.5 and .145 on 5 x 4-1/2, so if a spec calls out a minimum leaf gauge, check it against the size you're ordering.
9) Do the BB5 hinges come with screws?
Each box of 3 hinges includes a full set of both machine screws and wood screws, so you're covered whether you're hanging into a hollow metal frame or a wood jamb. Nothing extra to order for basic mounting.
10) Which ANSI standards do the Design Hardware BB5 hinges meet?
The BB5 meets ANSI A156.2, and its dimensions and tolerances conform to ANSI A156.7. That covers the two references most commercial hardware schedules cite for a full mortise butt hinge.
11) Are these hinges available in stainless steel for a coastal or wash-down location?
Base material on the BB5 is steel (ANSI A8112) or stainless steel, Grade 304 standard (ANSI A5112), and marine Grade 316 in US32D is also made. For salt air or frequent wash-down, ask for the 316 marine grade rather than plated steel.
12) Can I run electrified hinges in the same series for an access control door?
Yes. The BB5 line includes concealed thru-wire and monitoring options, so you can transfer power or a door position signal through the hinge instead of cutting in a separate electric power transfer. Order the electrified version for the leaf that carries the wire and standard BB5 hinges for the rest.
13) For a coastal or wash-down opening, which ball bearing hinge should be used instead of a plated steel one?
The Design Hardware BB5 is offered in steel or stainless steel base material, with marine grade 316 stainless in US32D also available for corrosive environments. If you prefer a stainless hinge in the larger 4-1/2 inch by 4-1/2 inch size, the Orca Hardware SSB4545 is a stainless steel butt hinge with ball bearings in medium duty. Match the size to the existing door and frame prep first, then choose the material for the environment.
14) Is a 4-1/2 inch stainless ball bearing hinge a drop-in substitute for a 4 inch standard weight hinge?
No. Both the Design Hardware BB5 at 4 inch by 4 inch and the Orca Hardware SSB4545 at 4-1/2 inch by 4-1/2 inch are medium duty ball bearing hinges, but the leaf dimensions differ, so the larger hinge needs a deeper and taller mortise in both the door and the frame. On an existing opening, order to the size already prepped; on new doors, choose the size called out on the hardware schedule.
15) What finishes does the Design Hardware BB5 4 x 4 hinge come in?
Three: 613 satin bronze oil-rubbed, 619 satin nickel, and 626 satin chrome. All three are offered with square, 1/4 inch radius, and 5/8 inch radius corners, so you can match the existing frame prep without giving up the finish you need across the other openings.
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Does the Design Hardware DH-BB5-4X4-26D come with a warranty?
Absolutely. The Design Hardware DH-BB5-4X4-26D is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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