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Views: 1 Author: Site Editor Publish Time: 2026-03-20 Origin: Site
Frameless glass doors have become a hallmark of modern commercial and architectural design, prized for their sleek aesthetics and seamless visual appeal—and glass door floor springs are the gold standard that makes this design both functional and durable. Unlike traditional door hinges, these floor-embedded devices provide silent, controlled opening and closing for heavy glass doors, with adjustable speed, stable support, and anti-sway performance that elevates the user experience. Engineered to match specific glass thickness, door weight, and width parameters, glass door floor springs blend invisible installation with reliable functionality, making them indispensable for offices, shopping malls, hotels, and high-end commercial spaces. Their precision engineering and long service life set them apart as the definitive choice for premium frameless glass door solutions.
| Parameter Name | Description | Common Specifications |
| Product Type | Floor spring designed for frameless glass doors | Double Action Floor Spring, Single Cylinder Floor Spring, Heavy-Duty Glass Door Floor Spring |
| Material | Main body and shaft material | Cast Iron, Aluminum Alloy, Stainless Steel 304 |
| Surface Treatment | Finish for appearance and rust resistance | Spraying, Brushed, Polished, Powder Coating |
| Suitable Glass Thickness | Compatible glass door thickness | 8–12 mm, 10–15 mm, 12–19 mm |
| Max Door Width | Maximum applicable glass door width | 800–1100 mm, 900–1400 mm |
1. Why doesn't my glass door close properly (not returning to its original position)?
This is the most common complaint. Usually, it is caused by two reasons:
Installation deviation: The center axis of the spring mechanism is not on the same vertical line as the upper ground axis of the door top, causing the door panel to run with torsion.
Screw loosening: The fixing screws between the bottom spring clip (lower clamp) and the center axis of the spring mechanism are loose, causing the door panel to have a slight displacement along the axis.
Solution: Re-calibrate the verticality and reinforce the screws of the door clamp.
2. Seeing oil in the spring box, does it mean it's broken?
Yes, usually it indicates waste-out.
The spring mechanism relies on hydraulic oil for buffering. If there is oil stain under the cover plate， it indicates that the sealing ring is aging or the cylinder is cracked (usually due to excessive force when forcibly pushing the door).
Consequence： Oil leakage will cause loss of buffering force， and the door will instantly spring back due to the spring inertia， easily shattering the glass or injuring people. It is recommended to replace it immediately upon discovering oil leakage.
3. How to adjust the closing speed by yourself？ (Too fast and it hits the foot or too slow and it can't close properly)
Most spring mechanisms have two adjustment valves (usually labeled 1 and 2)：
1-speed valve： Adjust the closing speed from 90° to 15° over a wide range.
2-speed valve： Adjust the final locking speed from 15° to 0° (to prevent impact).
Operation： Turning the screw clockwise slows it down， and counterclockwise speeds it up. Note： The adjustment screws should not be fully unscrewed， otherwise it will cause the hydraulic oil to spray out.
4. When choosing， "which size of door" should I choose "which force"?
Choosing the wrong model (a small one for a large task) will result in extremely short lifespan of the spring mechanism. General standards reference：
Lightweight (80kg level)： Suitable for ordinary office glass doors within 900mm wide.
Medium (120kg level)： Suitable for shop doors within 1000mm - 1100mm wide.
Heavy (150kg and above)： Suitable for ultra-wide or thickened doors over 1200mm.
Calculation formula： Glass weight = Area (㎡) × Thickness (mm) × 2.5kg.
5. Why does my spring mechanism have different speeds in winter and summer?
This is caused by the physical property of thermal expansion and contraction of hydraulic oil：
Winter： The oil becomes thicker， and the closing speed will slow down， or it may not close at all.
Summer： The oil becomes thinner， and the closing speed will increase， or there will be impact sounds.
Suggestion： High-quality spring mechanisms use constant temperature hydraulic oil， which is less affected； for ordinary spring mechanisms， it is recommended to make minor adjustments according to the seasons.
