Top 6 Joining Elements for Aluminum Profiles

Aluminum profiles are an engineer's grown-up version of Legos. The best way to describe these profiles would be as cheap, light and simple. In order to connect two or more profiles, one needs to acquire the necessary joining elements. These components provide the mechanical bond that holds the aluminum profiles securely together.

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ALU 40x40

Picture 1: 40 x 40 aluminum profile.

 

Our online shop provides a wide variety of aluminum joining elements. Before you decide on a particular product, it is always best to compare different types of joinig elements, and look at their strengths, weaknesses and assemble specifics. To help you out, we have put together a list of 6 top joining elelments.

Brackets

The most basic ones are brackets. Brackets are meant for 90-degree connections. Attaching a bracket is simple, and it only requires a couple of screws and nuts. An example of attaching two aluminum profiles can be seen in the picture below. Brackets are available for the following alu. profile combinations: 30 x 30, 30 x 60, 40 x 40, 40 x 80, 45 x 45, 45 x 90, 60 x 60, 80 x 80 and 90 x 90.

 

            bracket aluminium profile      

Picture 2: Bracket for 90-degree connections.

Corner connector cubes

A more elegant solution would be the use of corner connector cubes. With no protruding features, they are indeed pleasant on the eyes. Unfortunately, the downside is their higher price and that cube corner connectors are limited to only a few aluminum profile combinations: 30 x 30, 40 x 40 and 45 x 45. It is also important to note that before the assembly, it is necessary to form a thread inside the profile via a thread forming tap.

 

  corner connector alu profile

Picture 3: Corner connector cube.

Inside angles

For a minimalistic approach, we offer a wide variety of inside angles. These are the best for unorthodox aluminum profile connections. The connections they form are strong but require some work to be done pre-assembly, from drilling holes in the profile for the inserts to forming threads for the necessary screws. Below, you can see more examples of joining element assembly for bolt connectors, connector sets, screw fitting, and profile connectors.

Bolt connectors are used for connecting two bolts in order to form a stronger mechanical bond. Its assembly requires a hole to be drilled throughout the profile.

 

        bolt connector alu profiles

Picture 4: Bolt connector set for aluminum profiles.

Connector sets

Connector sets are made for making 90-degree or 0-degree profile connections. Smilar to inside angles, connector sets are best for unorthodox aluminum profile connections. Just like the bolt connectors, they form a strong connection and they require a hole to be drilled, but only halfway through the profile.

 

          connector set alu profiles

Picture 5: 90-degree connector set.

Basic screws and inserts

The most basic joining elements are screws and connector sets. They are ideal for less demanding applications and are used very often. They can withstand loads of 800-1000 N and moment loads 40 Nm. Screws and connector sets are available in two dimensions. The first one is for alu profiles with slot 8 mm (ALU 30x30), and the second one is for aluminium profiles with slot size 10 mm (ALU 40x40 and higher).

Their assembly requires drilling a hole through one profile and forming a thread within another one. The effectiveness of screws can be improved drastically with a bolt connector, but this also increases assembly time and costs.

 

basic screw aluminium profiles

Picture 6: Basic screw with a round head.

 

Linear joint connectors

When there is a need for long profiles, but the logistical cost of transporting them is high, it makes more sense to cut them up into smaller pieces and then use linear connectors to assemble them. Linear joint connector is basicly T shaped nut with long length. T shape is designed to fit in aluminium profile slot. Before using this solution, you must double check the load capacitys of linear connector joint. From stiffness point of view it is always better to use aluminium profile from one part. 

  

                  linear connector alu profiles

Picture 7: Linear connectors for longer aluminum profiles.

 

Ultimat comparison of joining elements for aluminum profiles 

When constructing a system from aluminum profiles, one should take into account all the costs, not just the basic components. For instance, the cost of the necessary tools for assembly and time consumption also play an important role. Let this cross-reference chart help you in choosing the best possible solution for your aluminum profile assembly.

 

 

Milling Connector

Brackets

Inside Angle

Bolt Connector

Connection Screw

Flexibility of Usage

5

5

2

2

3

Adjustability

5

5

3

1

1

Frame Stiffness

4

4

2

5

5

Vibration Resistance

4

2

1

5

5

Space Requirement

5

2

5

4

5

Assembly Time

5

5

4

1

4

Cost-Effectiveness

4

5

4

2

4

Aesthetic Finish

5

1

5

5

5

5 = Highest/Best, 1 = Lowest/Worst

Truly, the application for aluminum profile systems is only limited by our imagination, pockets and time. For more information about aluminum profile systems feel free to browse our online shop or our assortment of catalogs.

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