A KBK crane system typically requires a minimum clear height of 3 to 4 meters, depending on the type of configuration and the desired lifting height. The required floor area is determined by the span of the bridge and the desired travel length along the runway. Both small workshops and large production halls can be suitable, provided the space is carefully mapped out. In this article, we answer the most frequently asked questions about space usage and applicability of a KBK system.
Which dimensions determine the required space for a KBK system?
The required space for a KBK crane system is determined by three main dimensions: the span of the bridge, the travel length of the runway, and the clear height below the ceiling or roof structure. Together, these three factors determine the working range and installation requirements of the system in your workspace.
The span is the horizontal distance the bridge covers between the two rails. For a KBK light crane system, this typically ranges from a few meters to approximately ten meters, depending on the configuration. The travel length determines how far the crane can move along the runway, which directly affects the usable working area.
In addition to these three core dimensions, the following factors also play a role:
- The structural height of the KBK rail system itself, including the trolley and hoist
- The required safety margins above and around the load
- The position and load-bearing capacity of the existing floor or wall structure
- Any obstacles such as pipes, columns, or other equipment in the space
An accurate survey of the available space is therefore always the first step before a KBK system is designed or installed.
What is the minimum clear height required for a KBK crane?
As a rule of thumb, a KBK crane requires a minimum clear height of 3 meters, but in practice 3.5 to 4 meters or more is recommended. The exact minimum space depends on the structural height of the system, the desired lifting height, and the dimensions of the loads to be moved.
The clear height is measured from the floor to the lowest obstacle above the working zone, such as a roof beam, a sprinkler pipe, or a light fixture. From that clear height, the structural height of the KBK rail system and the trolley is then subtracted, after which the remaining space is available as the effective lifting height.
In spaces with a limited clear height, technical solutions are sometimes possible, such as a low-headroom version of the trolley or a modified suspension structure. Nevertheless, the rule applies: the more clear height available, the greater the usable lifting height and the more flexibly the system can be deployed.
What is the difference between a free-standing and a supported KBK configuration?
In a free-standing KBK configuration, the rails are attached to the existing building structure, such as roof trusses or wall columns, without additional floor-mounted supports. In a supported configuration, the system rests on its own uprights or columns that are placed on the floor. This difference has direct consequences for space utilization and installation requirements.
The free-standing variant is ideal when the load-bearing capacity of the building structure is sufficient and the floor space must remain completely clear for operations or vehicle movements. This configuration does require a careful assessment of the existing structure, as the loads are transferred entirely to the building.
The supported configuration is suitable when the building structure is not strong enough, or when the system needs to be installed in an open space without suitable suspension points. The uprights then absorb the load, but do take up floor space. In both cases, the chosen configuration partly determines the minimum space and structural provisions required.
Can a KBK system also be installed in an existing building?
Yes, a KBK system can in many cases also be installed in an existing building. The modular construction of a KBK light crane system makes it relatively straightforward to adapt to the existing situation, provided the structure and the available space meet the minimum requirements.
When installing in an existing building, a structural assessment is almost always necessary. This evaluates whether the roof trusses, wall columns, or floor can bear the additional load of the crane system. If the existing structure has insufficient load-bearing capacity, a supported configuration with its own uprights can provide a solution.
Practical points of attention when installing in an existing building are:
- The available clear height after deducting existing installations and structures
- The accessibility of the space for assembly of the rail components
- The presence of obstacles that limit the travel range
- The routing of existing pipes and installations that affect the assembly route
With proper preparation and a custom-made design, installation in an existing building is achievable in most situations.
How much working range does a KBK system offer in practice?
The working range of a KBK system in practice is determined by the combination of the travel length along the runway, the span of the bridge, and the lifting height. Together, these three dimensions form the three-dimensional working volume within which loads can be moved.
In practice, this means that the usable working range is slightly smaller than the total dimensions of the system. At the beginning and end of the runway, an end-stop zone is required, and the trolley cannot travel the bridge all the way to the very end. Taking these margins into account, an effective working area remains that is more than sufficient for daily operations in most production and logistics environments.
An additional advantage of a KBK light crane system is that multiple systems can be combined. By connecting or coupling two or more runway systems, the working range can be extended over a larger floor area, without the need for a heavy overhead crane.
When is a KBK system the right choice for a workspace?
A KBK system is the right choice when a workspace needs flexible, light lifting solutions for loads up to approximately 2,000 kilograms, where the available height is limited or the floor space must remain completely clear. The system fits particularly well in assembly departments, machine workshops, assembly lines, and logistics environments.
A KBK crane system is especially suitable when one or more of the following conditions are met:
- The loads to be moved are relatively light, but must be positioned regularly and precisely
- The workspace has a limited clear height where a conventional overhead crane does not fit
- The building structure is not heavy enough for a fully suspended crane system of greater capacity
- There is a need for a modular system that can easily be expanded or modified later
- The floor must remain free of uprights or other obstacles for vehicles or employees
When loads are heavier or spans are larger, an overhead or gantry crane is often a better solution. A thorough analysis of the work processes and the spatial situation is always the basis for the right choice.
How we help you choose the right KBK crane system
At BKRS, we are happy to think along with you from the very first moment. Whether you are setting up a new workspace or want to equip an existing building with a lifting solution, we map out the situation completely and advise you on the most suitable configuration. Our approach is concrete and personal:
- We carry out a thorough survey and structural assessment of your space
- We advise on the choice between a free-standing or supported configuration
- We design a KBK system that perfectly matches your work processes and spatial situation
- We handle the complete realization, from drawing to assembly and delivery
- We offer annual inspection, inspection, and maintenance as an accredited inspection body
Everything goes through one fixed point of contact, so you can focus on running your business. View our complete range of services or contact us for a no-obligation consultation about your specific situation.
Frequently Asked Questions
What is the average cost of a KBK crane system?
The costs of a KBK system vary greatly depending on the span, travel length, lifting capacity, and chosen configuration (free-standing or supported). For a tailored indication, it is advisable to request a no-obligation consultation, so that the price can be based on your specific situation and requirements.
How long does the assembly of a KBK system take?
The assembly time depends on the size and complexity of the system, but a standard KBK installation is in many cases operational within one to a few days. Thanks to the modular construction, assembly proceeds efficiently and with minimal disruption to your business processes.
How often does a KBK crane system need to be inspected?
In the Netherlands, an annual inspection of lifting installations is required by law. An accredited inspection body, such as BKRS, carries out this inspection and ensures that your system continues to operate safely and in accordance with the applicable standards.
Can a KBK system be expanded or modified later?
Yes, one of the greatest advantages of a KBK light crane system is the modular construction, which allows the system to be easily expanded, shortened, or modified if your work processes or space change. This makes it a future-proof investment for growing businesses.