- Product Information
Stainless Steel Four Ball Bearing Butt Hinge Model 4BB‑Series
| Model No. | Dimension(H × W × T) |
|---|
2.0mm Thickness Hinges: 25 ~ 40Kgs Per Door
2.5mm Thickness Hinges: 40 ~ 60Kgs Per Door
3.0mm Thickness Hinges: 60 ~ 80Kgs Per Door
3.5mm Thickness Hinges: 80 ~ 120Kgs Per Door
4.0mm Thickness Hinges: 120 ~ 150Kgs Per Door
Recommendation: 3 pieces per door
| Material Grade | Application Environment |
|---|---|
| SUS201 | Cost‑effective stainless steel for indoor dry‑environment commercial projects. |
| SUS304 | General‑purpose anti‑corrosion stainless steel for hotel, office, public‑building commercial door projects, indoor & moderate‑humidity outdoor environment. |
| SUS316 | Marine‑grade anti‑corrosion material, suitable for coastal, high‑salt‑spray and high‑humidity harsh environment. |
Heavy‑weight interior wooden door & metal door
High‑traffic public restroom, hospital, school, commercial building projects
Doors require ultra‑quiet, low‑friction pivoting performance
Engineering architectural door hardware
Coastal / high‑humidity projects(SUS316 option)
Four Ball‑Bearing Insert Structure‑Quad ball bearing set fitted inside hinge knuckle, minimal friction, ultra‑quiet door rotation, superior wear‑resistance for continuous high‑frequency opening‑closing cycles.
3 Grade Stainless Steel Optional‑SUS201 / SUS304 / SUS316, meet different budget and anti‑corrosion requirement
Complete Imperial Size Range‑3",4",5",6" series with multiple thickness variants for different door weight
Engineering Load‑Rating Reference‑Clear door‑weight suggestion for project quotation & hardware selection
6 Surface Finishes Available‑SS, PSS, BP, GP, AB, AC to match diverse door‑finish requirement
OEM Supported‑Custom logo engraving & special packing for bulk project orders