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Window Anchor

 
Window anchors, also known as window expansion bolts and door and window anchors, are a type of mechanical anchor used to fix door and window frames, curtain walls and other components in building installations. They belong to the expansion type anchors. They use the expansion piece to squeeze the anchor hole wall to form an anchoring effect. The expansion piece is expanded by the relative movement of the cone and the expansion piece, and the expansion extrusion force is generated with the hole wall concrete to achieve pull-out resistance.
Window anchors are mainly made of metal and nylon. Metal window anchors are specially used for fixing plastic steel doors and windows, aluminum alloy doors and windows, etc. It consists of screws, tubes and nuts.
 
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Advantage



1. Penetration-type efficient anchoring

Directly penetrate the door and window frames and the wall substrate to complete the rigid connection in one step. Compared with traditional embedded parts or welding processes, the installation efficiency is increased by more than 50%, and the positioning accuracy is ±1mm, which completely avoids the problem of secondary displacement of the frame.


2. Super strong mechanical properties

Metal window anchors (such as S10 specifications) have a pull-out force of >4,100N and a shear force of 10.2KN. They can withstand the wind pressure of a 12-level typhoon (≥1.5KN/m²) and repeated opening and closing vibrations. The load capacity is more than 30% higher than that of ordinary expansion bolts, ensuring the safety of doors and windows in high-rise buildings.


3. Energy-saving thermal blocking

The thermal conductivity of nylon anchors is only 0.3W/(m·K), which is less than 1/150 of that of metal, effectively cutting off the cold and hot bridge between the frame and the wall. When applied to thermally broken aluminum windows, it reduces building energy consumption by 8%-12% and eliminates the risk of condensation water erosion at the anchor point.


4. Adaptability to Complex Substrates

Hollow brick/Aerated concrete block: Nylon wing-type expansion structure forms a mechanical interlock, increasing pull-out resistance by 200%.

Composite insulated walls: Extra-long sleeves (>120mm) penetrate EPS/XPS insulation layers, anchoring into load-bearing structures to prevent insulation layer crushing failure.


5. Integrated Installation Efficiency & Anti-Theft Security

Rapid installation:

Nylon hammer-driven anchors: <15 seconds per point

Metal anchors: Compatible with electric screwdrivers, tripling installation speed.

Anti-theft reinforcement:

304 stainless steel material resists sawing.

Requires destructive removal of anchor points.


6. Full-Scenario Reliability

From high-rises in typhoon-prone zones to ultra-low energy buildings, it simultaneously addresses three core demands:

Structural safety (wind/quake resistance); Energy conservation (thermal break & condensation prevention); Construction efficiency (rapid installation); Proving to be an irreplaceable anchoring solution for modern fenestration engineering.


Application



Door and window frame anchorage:

As a core application, the window anchor is specially used for penetrating fixing of plastic steel, aluminum alloy and other door and window frames and walls (concrete, solid/hollow bricks). Its metal expansion sleeve generates a pull-out force of >4000N to resist wind pressure and vibration; the nylon material is suitable for the insulation layer, blocking the cold and hot bridge, taking into account sealing energy saving and anti-theft enhancement.


Window Anchor
ModelModel
8*7210*72
8*9210*92
8*11210*112
8*13210*132
8*15210*152
8*17210*182


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