Aluminium profiles with a slot AC 40-8
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Introduction to the AC 40-8 system
Thanks to their modular dimensions, the AC 40-8 aluminium profiles are among the most widely used structural profiles on the market. The series is based on a single 40×40 mm base cross-section, from which all the other profile sizes in the series are derived. A characteristic feature of the AC 40-8 system is the uniform 8 mm slot of the same shape all around the profiles, which allows the individual profiles to be combined with one another easily and makes them compatible with all the system's connecting elements. As a result, AC 40-8 profiles can be joined in any way and complemented with accessories without any modification – the system is fully modular. This category belongs to the main section Aluminium profiles and accessories, which covers the complete range of ALUSIC aluminium structural systems.
Key features of AC 40-8 profiles
- The 8 mm slot and compatibility: All AC 40-8 profiles have a standardised 8 mm wide T-slot. The slot shape is identical across the whole series, which guarantees full compatibility with the fastening material (bolts, nuts, angle brackets, etc.) and easy joining of profiles to one another. Panels, infills or accessories can also be fixed into the 8 mm slot, typically using connecting elements for an M8 bolt to secure a firm joint.
- Modular dimensions: The base module is the 40×40 mm cross-section. Profiles with multiple dimensions are available on its basis (40×80, 40×120, 80×80 mm and so on). These modular sizes make it possible to create structures of various shapes and sizes; the profiles fit together dimensionally and can be combined within a single assembly.
- Light vs. heavy version: AC 40-8 profiles are made in two wall-thickness variants – light (standard) and heavy. Both variants have an identical outer cross-section and dimensions but differ in weight and load capacity. Heavy profiles contain more material (thicker walls), which increases their strength, permits higher loads and reduces deflection under dynamic stress.
- Material and surface finish: The profiles are made of high-quality EN AW 6060-T5 aluminium alloy with an anodised surface. Anodising creates a protective layer >12 µm thick that increases resistance to corrosion and mechanical wear. They meet the accuracy of the EN 12020-2 standard.
- Versatility and variability: Most profiles have slots on all sides, which allows components to be attached in any direction. Variants with smooth sides also exist, reducing the build-up of dirt and improving appearance.
Typical use and industrial applications
Thanks to their robustness and universal design, AC 40-8 profiles are very widely used. Most often they serve for:
- Workbenches and assembly stations: Rigid frames for ergonomic workplaces with the option of fitting shelves and holders.
- Protective fencing and machine guards: Safety enclosures, doors and guards for machinery.
- Conveyor and line frames: Ideal for building the frames of conveyor systems and handling units.
- Machine bases and equipment structures: Supporting frames for 3D printers, CNC machines or robotic workstations.
- Universal structures and fixtures: Trolleys, racks or stands working as a construction kit with no welding required.
Profile sizes available
The AC 40-8 series includes several basic cross-sections (all with an 8 mm slot):
- 40×40 mm profile: The most universal square profile. A standard variant (lighter, approx. 1.37 kg/m) and a heavy one with a thicker wall.
- 40×80 mm profile: A rectangular profile, very strong in the direction of the longer side. Suitable for conveyors and machine frames.
- 40×120 mm profile: Intended for extreme loads in the direction of the 120 mm side or for long spans.
- 80×80 mm profile: A square profile with high rigidity in all directions, ideal for gantry frames.
- 80×120 mm profile: A very robust profile for the frames of the most demanding machines and lines.
The profiles come in standard lengths of approx. 6 m. We offer precise cutting of profiles to size according to your requirements, including all accessories such as end caps and connecting elements.
Benefits for customers
- Modularity and flexibility: The system works as a construction kit that can be altered or dismantled at any time without damaging the parts.
- Easy, fast assembly: No welding needed. Ordinary tools and mechanical fasteners are enough.
- High compatibility: Full compatibility within the ALUSIC system and the standardised 8 mm slot.
- Strength and low weight: An excellent strength-to-weight ratio compared with steel structures.
- Professional appearance: The anodised surface is attractive and resistant to corrosion and scratching.
Product sorting
List of products
Square nut with spring for AC 40-8, AC 45-8 grooves with M6 thread made of galvanised steel
Universal angle bracket with a 90° angle and dimensions of 38x38 for connecting profiles from the outside using M8x20 screws.
M6x20 zinc-plated steel cylindrical head screw
Square nut with spring for AC 40-8, AC 45-8 slots with M4 thread made of galvanised steel
Aluminium profile with a modular section dimension of 40x40 and 4 grooves in the shape of AC 40-8. Standard version weighing 1.37 kg/m.
Square nut for AC 40-8, AC 45-8 grooves with M6 thread made of galvanised steel
Rectangular nut with spring for AC 40-8, AC 45-8 grooves with M8 thread, made of galvanised steel
M5x12 galvanised steel cylindrical head screw
Aluminium profile with a modular cross-sectional dimension of 80x80 with 8 AC 40-8 shaped grooves. Standard version with a weight of 3.61 kg/m.
Aluminium profile with a modular section dimension of 40x40 and 4 grooves in the shape of AC 40-8. Heavy-duty version weighing 1.62 kg/m.
M8 nut with flange, made of galvanised steel.
PVC seal for profile groove to attach 1 mm thick panels into 8 mm wide grooves.
M5x20 galvanised steel cylindrical head screw
Universal angle bracket with a 90° angle and dimensions of 25x80 for connecting profiles from the outside using M8x20 screws.
Blanking plug for 7.5 mm hole, made of grey polyamide.
Small 90° angle bracket with dimensions 40x40 for joining profiles from the outside using M8 countersunk screws.
M6x16 zinc-plated steel cylindrical head screw
Rubber base pad insert with a diameter of 40 mm.
M8x16 zinc-plated steel cylindrical head screw
Rubber base pad insert with a diameter of 50 mm.
Stainless steel M8x20 cylindrical head screw
Base with a diameter of 80 mm and an M16 connection thread. Base load capacity of 1000 kg.
Aluminium profile with a modular section size of 40x40 and 3 grooves in the shape of AC 40-8.
Stainless Steel M8x40 Cylindrical Head Screw
Square nut with spring for grooves AC 40-8, AC 45-8 with M8 thread made of stainless steel
M6 screw cap with cylindrical head and 5 mm hexagon socket, cap diameter 10 mm.
Stainless Steel M8x12 Socket Head Cap Screw
M5x16 zinc-plated steel cylindrical head screw
Stainless steel M8x30 cylindrical head screw
M8x50 zinc-plated steel cylindrical head screw
Alignment base for fixing blocks with a height of 5 mm.
Stainless steel M8x45 cylindrical head screw
Stainless steel M8x35 cylindrical head screw
