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CH‑45‑SP‑SQ 4.5 Inch Spring Loaded Self‑Closing Square Corner Butt Hinge
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SURFACE FINISHES
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SPEC NOTE
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Product Description
CH‑45‑SP‑SQ 4.5 Inch Spring Loaded Self‑Closing Square Corner Butt Hinge, 4.5" ×4.5" ×3.0mm, square‑leaf profile. Available in cold‑rolled steel or SUS304 stainless‑steel. Integrated internal spring assembly delivers reliable self‑closing performance, closing tension can be adjusted on‑site. Square‑corner format fits corresponding square‑cut door preparation, suitable for medium‑weight residential and commercial self‑closing doors.
Installation recommendation: Minimum 2 pieces per door.
Installation recommendation: Minimum 2 pieces per door.
Specification & Dimension Table
| Model No. | Dimension (H × W × T) | Leaf Corner | Bearing Type | Rated Door Weight |
|---|---|---|---|---|
| CH‑45‑SP‑SQ | 4.5" × 4.5" × 3.0mm | Square‑Corner | Spring‑Loaded | 50‑60Kgs |
Load‑Rating Recommendation
3.0mm heavy leaf thickness: 50‑60Kgs door weight rating
Installation advice: 2‑3 pieces per door
For dry indoor use; medium‑duty commercial & residential self‑closing interior doors
Finish Explanation
| Code | Full Finish Name | Process Description |
|---|---|---|
| SC | Satin Chrome Plated | Cold‑rolled steel substrate, satin chrome electroplated finish |
| SN | Satin Nickel Plated | Cold‑rolled steel substrate, satin nickel electroplated finish |
| MB | Matte Black Plated | Cold‑rolled steel substrate, matte black electroplated finish |
| US10B | Oil‑Rubbed Bronze US10B | Cold‑rolled steel substrate, antique oil‑rubbed bronze electroplated US standard finish |
| SSS | Satin Stainless Steel | SUS304 substrate, brushed satin mechanical finish |
Application Scenarios
Medium‑duty commercial office self‑closing doors
Residential heavy interior self‑close passage doors
Projects requiring square‑corner hinge door‑cut preparation
Product Advantages
Adjustable Spring‑Loaded Mechanism‑Field‑tunable closing force to match door weight.
Square‑Corner Profile‑Precise fit for square cut‑out door prep.
3.0mm Heavy‑Gauge Leaf‑Rigid plate for medium‑commercial duty cycles.
Material Option‑Cold‑rolled steel or SUS304 stainless for corrosion‑resistant requirements.
OEM Acceptable‑Custom logo & bulk‑order special packing available.
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