KBK crane systems are light-duty crane systems consisting of aluminium or steel profiles to which an electric chain hoist or trolley is attached. They are available in several configurations, including single-girder, double-girder, freestanding, and building-mounted variants, each suited to specific working environments and applications. In this article, we answer the most frequently asked questions about the different types of KBK cranes, their load capacity, and expansion possibilities.
What are the different types of KBK crane systems?
KBK crane systems are modular light-duty crane systems supplied in several basic types: the single-girder, the double-girder, the freestanding configuration, and the building-mounted configuration. Each type is built from standardised profiles and components, enabling rapid installation and easy adaptation.
Modularity is the greatest advantage of a KBK crane rail system. The profiles can be combined into straight runs, curves, switches, and even multiple workstations connected to one another. This makes it possible to design an aluminium crane system that fits perfectly with the layout of a production hall or workshop, without requiring major structural alterations.
In addition to the structural layout, KBK crane systems are also distinguished by the profile used. Lighter profiles are suitable for smaller loads and compact workspaces, while heavier profiles offer greater load capacity for industrial environments with intensive use.
How does a KBK single-girder differ from a double-girder system?
In a KBK single-girder system, the trolley runs beneath a single profile, keeping the construction compact and lightweight. A double-girder system uses two parallel beams on top of which a trolley rides, enabling a greater hook height and a higher load capacity.
The choice between the two configurations depends on the available headroom in the space and the weight of the loads to be transported. A single-girder overhead crane in light construction is ideal when headroom is limited, because the hoist hangs below the beam, losing as little height as possible. This makes the system particularly suitable for workshops with a low ceiling.
The double-girder variant offers greater stability for heavier loads and larger spans. When a greater working width or a higher load capacity is required, this is the preferred choice. Both variants are fully modular and can be extended or adapted as needs change.
For which applications are KBK crane systems most suitable?
KBK crane systems are most suitable for the internal transport and positioning of loads in production environments, assembly departments, warehouses, and workshops. They are widely used for repetitive operations in which loads are regularly moved from one workstation to another.
Typical KBK crane applications include:
- Supporting assembly lines in the manufacturing industry
- Ergonomic lifting of components at production lines
- Internal transport in warehouses and distribution centres
- Positioning of tools or moulds in workshops
- Maintenance work on machines or installations
The aluminium crane system is particularly popular in environments where hygiene or corrosion resistance is important, such as in the food industry or outdoor environments. Because the profiles are lightweight, the load on the existing building structure is minimal, making installation in existing halls easier.
What is the difference between a freestanding and a building-mounted KBK system?
A freestanding KBK system stands on its own columns and is therefore completely independent of the building structure. A building-mounted system is attached to the existing roof structure or wall structure of the building, meaning no additional columns are required.
The choice between the two configurations is determined by the load-bearing capacity of the existing building and the desired flexibility. A freestanding system is ideal when the building structure is not strong enough to absorb additional loads, or when the crane needs to be positioned in a specific location that is not directly beneath a supporting beam. Furthermore, a freestanding system can be relocated if the facility layout changes.
A building-mounted KBK system saves floor space, as no columns are needed. This is a major advantage in spaces where every square metre counts. Before a building-mounted system is installed, it is essential that a structural engineer assesses the load-bearing capacity of the existing structure to ensure safety.
How much can a KBK crane system lift?
KBK crane systems are light-duty cranes and typically have a load capacity of up to approximately 2,000 kilograms, depending on the profile used and the configuration. The most common applications fall within the range of 125 to 1,000 kilograms.
The exact load capacity is determined by several factors:
- The type and size of the KBK profile used
- The span of the beam (the greater the span, the lower the maximum load capacity)
- The mounting method (freestanding or building-mounted)
- The type of hoist or trolley used
For heavier loads, such as those of several tonnes, other crane types such as a standard overhead crane or gantry crane are more suitable. KBK light-duty cranes are specifically designed for frequent, ergonomically supported movements where speed and flexibility are more important than maximum load capacity.
Can a KBK system be extended or modified after installation?
Yes, a KBK crane system can be extended and modified after installation. The modular design of the system makes it possible to add extra runways, increase the span, incorporate switches, or connect additional workstations without having to completely replace the existing system.
This is one of the greatest advantages of KBK crane types compared to fixed, custom-welded structures. When a production hall is expanded or business processes change, the crane system can evolve with them. Profiles and components are interchangeable, which keeps adaptation costs low.
It is advisable, however, to take future expansions into account during the initial engineering phase. By dimensioning the columns and profiles directly for a greater future load capacity, for example, later modifications become simpler and less costly. Good preparation saves time and costs in the long run.
How BKRS helps with selecting and installing the right KBK crane system
At BKRS, we understand that no two production environments are the same. That is why we do not offer standard solutions, but work with you from the outset to design the KBK crane system that perfectly matches your specific work processes and space. What we can do for you:
- Technical advice and custom design: our drawing office and work preparation team analyse your situation and design a system suited to your load capacity, working width, and space layout
- Complete realisation: from structural and electrical engineering to assembly and commissioning, everything is handled by our certified team
- Inspection and testing: as an accredited inspection body, we carry out the mandatory annual inspections and tests, ensuring your system is always safe and compliant with regulations
- Extensions and modifications: if your business grows or your processes change, we adapt the existing system without unnecessary downtime
- Single point of contact: coordination, planning, and communication are handled through one contact person, so you can focus on your core activities
Would you like to know which KBK crane system best suits your situation? View our full range of services or contact us directly for a no-obligation conversation. We are happy to help.
Frequently Asked Questions
How do I know which KBK profile is suitable for my situation?
This depends on the weight of the loads to be lifted, the span of the beam, and the frequency of use. A supplier such as BKRS can make a calculation based on this information and recommend the right profile.
Is a building permit required for the installation of a KBK crane system?
This varies by situation and municipality. For freestanding systems or building-mounted installations that load the structural frame, a structural engineer’s assessment is often required and sometimes a permit. It is advisable to have this investigated in advance.
How often does a KBK crane system need to be inspected?
In the Netherlands, lifting equipment such as KBK cranes is subject to a statutory mandatory periodic inspection, generally annually. This inspection must be carried out by an accredited inspection body to comply with the Working Conditions Act and the Machinery Directive.
Can a KBK crane system also be used outdoors?
Yes, provided the system is equipped with corrosion-resistant materials and components that can withstand weather conditions. Aluminium profiles are often a good choice for this, but the electrical components must also be suitable for outdoor use.