- Product Information
SB403030‑4BB Solid Brass 4 Ball Bearing Butt Hinge 4"×3"×3.0mm
Important: 4BB = 4 Ball Bearings. Upgraded 4‑ball‑bearing construction comparing to 2BB series, for higher cycle‑life and heavier door weight requirements.
Dimension 4.0" × 3.0" × 3.0mm. Recommended 3 pieces per door leaf, suitable for door weight up to 60‑80Kgs. Multiple decorative brass‑based surface finishes for high‑end commercial and heavy‑usage residential wooden door projects.
| Model No. | Dimension (H × W × T) | Construction |
|---|
Related 4BB Series Models: SB302020‑4BB, SB302520‑4BB, SB403020‑4BB, SB303020‑4BB, SB403520‑4BB, SB404020‑4BB, SB353525‑4BB, SB353025‑4BB, SB403025‑4BB, SB404025‑4BB, SB503025‑4BB, SB503525‑4BB, SB504025‑4BB, SB403030‑4BB, SB403530‑4BB, SB404030‑4BB, SB454030‑4BB, SB454530‑4BB, SB503030‑4BB, SB503530‑4BB, SB504030‑4BB, SB604030‑4BB, SB605030‑4BB, SB454035‑4BB, SB454535‑4BB, SB505035‑4BB, SB403540‑4BB, SB454040‑4BB, SB454540‑4BB, SB503040‑4BB, SB504040‑4BB, SB505040‑4BB, SB604040‑4BB, SB504045‑4BB, SB504545‑4BB
2.0mm leaf thickness: 25 ~ 40Kgs per door
2.5mm leaf thickness: 40 ~ 60Kgs per door
3.0mm leaf thickness: 60 ~ 80Kgs per door
3.5mm leaf thickness: 80 ~ 120Kgs per door
4.0mm leaf thickness: 120 ~ 150Kgs per door
Installation advice: 3 pieces per door leaf
| Code | Full Finish Name |
|---|---|
| S&L | Satin Brass |
| P&L | Polished Brass |
| GP | Gold Plated |
| AB | Antique Brass |
| AC | Antique Copper (brass substrate, surface antique copper coating) |
Heavy‑traffic commercial interior wooden doors: hotel, office, public premises
Premium residential heavy‑weight solid wood entrance & interior doors
Projects requiring long service life, low‑maintenance silent door operation
4‑Set Precision Ball Bearings‑Upgraded four ball bearing groups for superior load‑bearing, minimal friction and extended service life vs 2BB version.
Solid Brass Body‑Corrosion‑resistant brass substrate, outstanding durability for high‑cycle opening‑closing.
Full‑size Series Coverage‑Complete 4BB range from 2.0mm‑4.5mm leaf thickness covers light‑duty to heavy‑duty door applications.
Multiple Decorative Finishes‑Matches full set brass architectural hardware collections.
OEM Acceptable‑Custom logo engraving and special packing for bulk orders.