BB40058 4.0" X 4.0" SWING CLEAR HINGE 2BB 5/8 RAD. CORNERS
BB40058 4-Inch Swing-Clear Hinge with 5/8-Inch Radius Corners
Usually Ships: 1-3 Business Days
Our BB40058 Swing-Clear Two Ball Bearing Hinge pairs a 4-inch nominal format with 5/8-inch-radius round corners for matching door and frame preparations. This standard-weight, full-mortise hinge has .130-inch leaf thickness and is designed for non-beveled-edge doors. Its offset arrangement helps move the open door leaf away from the passage at 90 degrees, subject to the geometry of the complete opening.
Practical Uses
- Passageway improvements: Evaluate swing-clear movement where the open door reduces usable passage.
- Equipment routes: Help move the leaf out of the way when compatible door and frame geometry allows.
- Round-corner replacements: Match the 5/8-inch radius, hinge thickness, attachment pattern, and offset before selecting a replacement.
- Coordinated renovations: Choose a listed finish to complement the other fittings at the opening.
Everyday example: A maintenance team wants to improve movement through an interior doorway used by supply carts. The installer checks that the door has a non-beveled edge and matching 5/8-inch-radius mortises, then compares the BB40058 template with the actual preparation. After fitting the hinge set, the team checks the passage at 90 degrees and verifies that the closer, stop, and trim accommodate the changed swing path. The hinge changes the open door's position; it does not widen the frame.
Fit Details That Matter
5/8-inch corner radius: Match rounded leaf corners to the door and frame recesses. A different radius or square corner is not automatically interchangeable without preparation work.
.130-inch leaf thickness: Verify the actual mortise depth before installation. A leaf seated too high or too deep can affect the operating gaps and alignment.
Full-mortise arrangement: Both leaves are recessed, one into the door and one into the frame. Confirm the footprint, screw positions, backing, and hinge-axis alignment.
Swing-clear geometry: Check the door thickness, jamb profile, adjacent wall, trim, stops, seals, and closer travel. Do not assume a fixed clearance gain at every opening.
Finish Options
- US10B Antique Bronze Oiled
- US15 Satin Nickel
- US26 Bright Chrome
- US26D Satin Chrome
- US3 Bright Brass
- US4 Satin Brass
Confirm the required finish in the selector. Where exposure conditions or a project schedule calls for a particular base material, verify the exact supplied configuration rather than relying on appearance alone.
Installation Guidance
- Review the application: Check door height, width, weight, construction, use frequency, and closer requirements.
- Compare the correct template: Verify the BB40058 layout against the actual opening before cutting or drilling.
- Support the door: Secure it during removal and fitting, and confirm sound attachment on both sides.
- Use appropriate fasteners: The template references eight #12 x 1-inch wood screws and eight #12-24 x 1/2-inch machine screws. Use the appropriate type for the actual preparation and confirm thread engagement.
- Align the hinge set: Seat leaves correctly and keep the hinge axes aligned to avoid binding.
- Test the complete opening: Check usable passage, free movement, hardware clearances, closing, and latching throughout the operating cycle.
Problems It Helps Address
- The open door obstructs passage: Provides a swing-clear option for a compatible opening.
- A round-corner preparation needs a matching hinge: Identifies the specific 5/8-inch radius and .130-inch thickness.
- Hardware must coordinate visually: Provides six listed finish choices.
Product Details
- Part number: BB40058
- Nominal listed size: 4 inches x 4 inches
- Leaf thickness: .130 inch
- Corner radius: 5/8 inch
- Mounting: Full mortise
- Type: Swing clear, two ball bearing
- Weight class: Standard weight
- Door-edge application: Non-beveled
Care and Project Coordination
Inspect attachment, alignment, and clearance during routine maintenance. Use cleaning and lubrication methods suitable for the supplied finish and bearing assembly. Investigate persistent scraping or binding across the complete door system rather than assuming the hinge alone corrects an unsuitable preparation.
Confirm the required hinge quantity and any specified non-removable-pin option before ordering. Verify required passage dimensions and accessibility or rated-opening requirements for the actual installed assembly. A swing-clear hinge alone does not establish compliance.
Technical References
Specialty Hinges Catalog, BB40058 Swing-Clear Specifications
