RL L250A5 Two-Way Double Arm Fin Spider Fitting for Heavy Duty Glass Facades
RL L250A5 Two-Way Double Arm Fin Spider Fitting for Heavy Duty Glass Facades
Discover the RL L250A5 Two-Way Double Arm Fin Spider Fitting, built for extreme climates. Features a 250mm span V-shape dual-point support for superior wind and torsion resistance. View specs and installation guide.
RL L250A5 Two-Way Double Arm Fin Spider Fitting: The Large-Span Core for Facades Defying Extreme Cold
In modern high-rises and large commercial complexes, fully transparent glass facades (Шилэн фасад) are essential for showcasing architectural aesthetics. However, when faced with fierce winds and extreme temperature differentials, how do you ensure the absolute safety of the facade? The RL L250A5 Two-Way Double Arm Fin Spider Fitting is born for this challenge. As a heavy-duty V-shaped double-arm support hardware, it clamps onto the glass fin and extends two load-bearing points outwards, providing unparalleled stability for the entire curtain wall system. You can explore this series in detail in our structural components section: https://www.stainlesssteelhardwares.com/fin-spider.html.
1. Core Technical Specifications and Standard Configuration
The design of the RL L250A5 aims to tackle high-intensity wind loads and complex stress environments. It is precision-cast from high-grade stainless steel for immense structural strength. Below are the precise data based on engineering blueprints:
Overall Configuration: Features a deep-groove clamp base that extends into V-shaped double arms, forming a highly stable two-way (dual-point) connection.
Load-Bearing Span: The center-to-center distance between the two front external holes reaches 250mm. This large-span design significantly enhances the capacity to disperse wind pressure.
Connection Interface: The front connection ring has an outer diameter of 46mm, an inner hole diameter of 40mm, and a through-hole of 26mm. The horizontal extension depth of the arms is 119mm.
Fin Clamping Zone: The total height of the clamping plate is 200mm, with a clamping depth of 100mm. The center distance between the upper and lower locking bolts is 144mm.
Anti-Breakage Sleeve: Equipped with a high-toughness protective sleeve with an outer diameter of 19.5mm, which precisely fills the glass fin hole, entirely eliminating rigid metal-to-glass contact.
Glass Thickness (T): Supports customized bolt lengths to adjust the clamp spacing, perfectly accommodating various types of single-layer thick glass or multi-layer laminated tempered glass.
To maximize the mechanical performance of this double-arm fitting, we strongly recommend pairing it with our high-strength Spider Routel and Tension rods / Stainless Steel Rod to build a highly flexible and tensile 3D load-bearing network.
2. Competitive Advantages (VS Competitors)
When facing extremely harsh climates, conventional short-span or single-arm connectors on the market often fall short. The RL L250A5 possesses the following overwhelming advantages:
Material Stability in Extreme Cold: Many low-end alloy fittings suffer from cold embrittlement and fracture at temperatures below minus 30 degrees. The RL L250A5 uses premium stainless steel optimized with special intergranular spacing, maintaining outstanding yield strength even through extreme freeze-thaw cycles.
Double Arm Anti-Torsion Design: Ordinary single arms tend to generate eccentric torsion on the glass fin when hit by strong crosswinds. The 250mm dual-arm span of the RL L250A5 creates perfect torque balance, evenly converting lateral wind pressure into vertical compressive stress on the fin, drastically reducing the risk of spontaneous glass breakage.
Ulaanbaatar, the capital of Mongolia, experiences long winters with temperatures routinely dropping near minus forty degrees Celsius, accompanied by fierce Siberian winds. High-standard local buildings have incredibly strict requirements for architectural hardware (Спайдер шилэн хийц).
Case 1: A High-End Scenic Restaurant in the Chingeltei District.
Situated on a high floor, this restaurant used a frameless glass fin facade to offer guests an unobstructed view of the snowscape, directly facing high-altitude gale winds.
The restaurant's project manager gave this feedback: "We compared products from several countries and finally decided on the RL L250A5 two-way fin spider. Its 250mm double-arm span just looks incredibly secure. The installation team told me the hardware engagement is extremely precise. What we are most thankful for is that during a rare blizzard last year with severe gale-force winds, the customers inside couldn't even feel the glass deform or vibrate. A product that can withstand Ulaanbaatar's extreme cold and fierce winds is exactly what we crave."
Case 2: A Large Corporate Office Lobby in the Bayangol District.
This building features a five-story transparent lobby utilizing ultra-thick heavy laminated glass. The stress caused by thermal expansion and contraction in winter is terrifying.
The on-site general contractor reflected: "In this lobby project, we needed to use a massive amount of Fixing Clamp / Glass Clamp units and spider fittings. The 19.5mm frost-resistant sleeve on the RL L250A5 was an absolute lifesaver! When installing at minus twenty degrees, the glass is highly fragile. This sleeve perfectly absorbed the squeezing stress caused by cold contraction. Moreover, it matched flawlessly with the complementary components we purchased. Not a single pane of glass cracked due to differing expansion rates of the hardware. The building owner is full of praise for the engineering quality."
4. Standard On-Site Installation Instructions
Correct installation is the foundational guarantee for coping with extreme climates. Please strictly follow these steps:
Precise Positioning: Accurately mark the installation points with a 144mm hole spacing on a clean, ice-free glass fin.
Sleeve Insertion: You must insert the 19.5mm outer diameter weather-resistant sleeves onto the bolts. This is the critical barrier to prevent the glass hole walls from shattering under stress.
Clamp Fastening: Place the deep-groove clamp plates of the RL L250A5 on both sides of the glass fin, insert the bolts, and attach the nylon buffer washers.
Double Arm Connection: At the two connection holes spaced 250mm apart at the front, install the corresponding countersunk or flat-head routels, and connect them to the face glass.
Torque Management: Use a professional torque wrench to tighten the nuts in a cross-pattern. Crucial note: When installing in extreme cold regions, never lock them completely tight at once; you must leave a microscopic tolerance to accommodate thermal expansion and contraction caused by temperature swings.
To learn more about on-site installation details and load-bearing tests, welcome to visit our official YouTube channel: https://www.youtube.com/channel/UC3Lo3jsy1LWw0fH03FHZFug
5. Frequently Asked Questions (FAQ) Topic Cluster
Q1: What specific mechanical advantage does the "Double Arm" design of the RL L250A5 have over a single arm?
A: The 250mm span double-arm design forms a stable V-shaped triangle. When facing frontal gales, the dual-point support doubles the load dispersion area; against crosswinds, it effectively cancels out the eccentric torque that twists and cracks the glass, making it especially suitable for large-span facade panels.
Q2: Ulaanbaatar's winter can drop to -40°C; will the metal of this spider fitting become brittle?
A: Absolutely not. We utilize a special cold-brittle-resistant stainless steel forging process specifically for alpine regions. Its tensile strength and impact toughness at extreme low temperatures still far exceed international facade safety standards.
Q3: How large should the glass hole be to install this fitting?
A: Referring to the technical drawing, since the clamping end is equipped with a 19.5mm outer diameter protective sleeve, it is recommended to keep the glass fin hole diameter between 20mm and 22mm. This accommodates the gasket and leaves room for thermal expansion.
Q4: What connectors do I need to pair with this two-way fitting?
A: You will need to purchase two standard facade routels from our spider fittings product line. If your project has special wind load requirements, our technical team can assist you with stress calculations for the entire hardware set.
In modern high-rises and large commercial complexes, fully transparent glass facades (Шилэн фасад) are essential for showcasing architectural aesthetics. However, when faced with fierce winds and extreme temperature differentials, how do you ensure the absolute safety of the facade? The RL L250A5 Two-Way Double Arm Fin Spider Fitting is born for this challenge. As a heavy-duty V-shaped double-arm support hardware, it clamps onto the glass fin and extends two load-bearing points outwards, providing unparalleled stability for the entire curtain wall system. You can explore this series in detail in our structural components section: https://www.stainlesssteelhardwares.com/fin-spider.html.
1. Core Technical Specifications and Standard Configuration
The design of the RL L250A5 aims to tackle high-intensity wind loads and complex stress environments. It is precision-cast from high-grade stainless steel for immense structural strength. Below are the precise data based on engineering blueprints:
Overall Configuration: Features a deep-groove clamp base that extends into V-shaped double arms, forming a highly stable two-way (dual-point) connection.
Load-Bearing Span: The center-to-center distance between the two front external holes reaches 250mm. This large-span design significantly enhances the capacity to disperse wind pressure.
Connection Interface: The front connection ring has an outer diameter of 46mm, an inner hole diameter of 40mm, and a through-hole of 26mm. The horizontal extension depth of the arms is 119mm.
Fin Clamping Zone: The total height of the clamping plate is 200mm, with a clamping depth of 100mm. The center distance between the upper and lower locking bolts is 144mm.
Anti-Breakage Sleeve: Equipped with a high-toughness protective sleeve with an outer diameter of 19.5mm, which precisely fills the glass fin hole, entirely eliminating rigid metal-to-glass contact.
Glass Thickness (T): Supports customized bolt lengths to adjust the clamp spacing, perfectly accommodating various types of single-layer thick glass or multi-layer laminated tempered glass.
To maximize the mechanical performance of this double-arm fitting, we strongly recommend pairing it with our high-strength Spider Routel and Tension rods / Stainless Steel Rod to build a highly flexible and tensile 3D load-bearing network.
2. Competitive Advantages (VS Competitors)
When facing extremely harsh climates, conventional short-span or single-arm connectors on the market often fall short. The RL L250A5 possesses the following overwhelming advantages:
Material Stability in Extreme Cold: Many low-end alloy fittings suffer from cold embrittlement and fracture at temperatures below minus 30 degrees. The RL L250A5 uses premium stainless steel optimized with special intergranular spacing, maintaining outstanding yield strength even through extreme freeze-thaw cycles.
Double Arm Anti-Torsion Design: Ordinary single arms tend to generate eccentric torsion on the glass fin when hit by strong crosswinds. The 250mm dual-arm span of the RL L250A5 creates perfect torque balance, evenly converting lateral wind pressure into vertical compressive stress on the fin, drastically reducing the risk of spontaneous glass breakage.
Full System Compatibility: As a core connection hub, it can not only support independently but also integrate seamlessly with the spider fittings family. The base can be paired with bottom Glass spigots to share static dead loads, and the sides can work with a Bracket / Support Bracket to achieve multi-directional force transmission, offering excellent construction tolerance.
Ulaanbaatar, the capital of Mongolia, experiences long winters with temperatures routinely dropping near minus forty degrees Celsius, accompanied by fierce Siberian winds. High-standard local buildings have incredibly strict requirements for architectural hardware (Спайдер шилэн хийц).
Case 1: A High-End Scenic Restaurant in the Chingeltei District.
Situated on a high floor, this restaurant used a frameless glass fin facade to offer guests an unobstructed view of the snowscape, directly facing high-altitude gale winds.
The restaurant's project manager gave this feedback: "We compared products from several countries and finally decided on the RL L250A5 two-way fin spider. Its 250mm double-arm span just looks incredibly secure. The installation team told me the hardware engagement is extremely precise. What we are most thankful for is that during a rare blizzard last year with severe gale-force winds, the customers inside couldn't even feel the glass deform or vibrate. A product that can withstand Ulaanbaatar's extreme cold and fierce winds is exactly what we crave."
Case 2: A Large Corporate Office Lobby in the Bayangol District.
This building features a five-story transparent lobby utilizing ultra-thick heavy laminated glass. The stress caused by thermal expansion and contraction in winter is terrifying.
The on-site general contractor reflected: "In this lobby project, we needed to use a massive amount of Fixing Clamp / Glass Clamp units and spider fittings. The 19.5mm frost-resistant sleeve on the RL L250A5 was an absolute lifesaver! When installing at minus twenty degrees, the glass is highly fragile. This sleeve perfectly absorbed the squeezing stress caused by cold contraction. Moreover, it matched flawlessly with the complementary components we purchased. Not a single pane of glass cracked due to differing expansion rates of the hardware. The building owner is full of praise for the engineering quality."
4. Standard On-Site Installation Instructions
Correct installation is the foundational guarantee for coping with extreme climates. Please strictly follow these steps:
Precise Positioning: Accurately mark the installation points with a 144mm hole spacing on a clean, ice-free glass fin.
Sleeve Insertion: You must insert the 19.5mm outer diameter weather-resistant sleeves onto the bolts. This is the critical barrier to prevent the glass hole walls from shattering under stress.
Clamp Fastening: Place the deep-groove clamp plates of the RL L250A5 on both sides of the glass fin, insert the bolts, and attach the nylon buffer washers.
Double Arm Connection: At the two connection holes spaced 250mm apart at the front, install the corresponding countersunk or flat-head routels, and connect them to the face glass.
Torque Management: Use a professional torque wrench to tighten the nuts in a cross-pattern. Crucial note: When installing in extreme cold regions, never lock them completely tight at once; you must leave a microscopic tolerance to accommodate thermal expansion and contraction caused by temperature swings.
To learn more about on-site installation details and load-bearing tests, welcome to visit our official YouTube channel: https://www.youtube.com/channel/UC3Lo3jsy1LWw0fH03FHZFug
5. Frequently Asked Questions (FAQ) Topic Cluster
Q1: What specific mechanical advantage does the "Double Arm" design of the RL L250A5 have over a single arm?
A: The 250mm span double-arm design forms a stable V-shaped triangle. When facing frontal gales, the dual-point support doubles the load dispersion area; against crosswinds, it effectively cancels out the eccentric torque that twists and cracks the glass, making it especially suitable for large-span facade panels.
Q2: Ulaanbaatar's winter can drop to -40°C; will the metal of this spider fitting become brittle?
A: Absolutely not. We utilize a special cold-brittle-resistant stainless steel forging process specifically for alpine regions. Its tensile strength and impact toughness at extreme low temperatures still far exceed international facade safety standards.
Q3: How large should the glass hole be to install this fitting?
A: Referring to the technical drawing, since the clamping end is equipped with a 19.5mm outer diameter protective sleeve, it is recommended to keep the glass fin hole diameter between 20mm and 22mm. This accommodates the gasket and leaves room for thermal expansion.
Q4: What connectors do I need to pair with this two-way fitting?
A: You will need to purchase two standard facade routels from our spider fittings product line. If your project has special wind load requirements, our technical team can assist you with stress calculations for the entire hardware set.
