Since 1934 produces the Siegfried Frenzen GmbH under the brand name Hydrobull Workshop cranes, industrial cranes, special solutions and much more - consistently „Made in Germany“.
This long tradition is not just an anniversary - it is lived experience in every detail: from the first Hydrobull workshop crane to the present day via 28,500 cranes sold delivered to over 50 countries.
What makes Hydrobull special:
Made in Germany & own production
Guarantee of high quality, durability, reliable delivery times and local manufacturing standards. Predominant production with contract manufacturers in Germany
Broad product portfolio
Workshop cranes, industrial cranes, special cranes, slewing jib cranes, counterweight cranes, Elektrobull (electric versions), etc. This makes it possible to respond to a wide range of applications.
Robustness & durability
Cranes are also designed for frequent use („up to 100× per month“ for many industrial models). Counterweight cranes have maintenance-friendly designs, large radii and stable chassis. Many wear parts are available for many years.
Flexible application options / special solutions
Cranes with slewing function, very narrow and low versions (e.g. special crane with short chassis length, low width/underride height) for confined spaces. Hydrobull listens and develops the right solution
Safety & standards
European machinery protection directives (e.g. EC Machinery Directive 42/EC/2006, DGUV68), declarations of conformity, test books, operating instructions. In the case of custom-made products, inspections are also carried out as required by an external officially authorized crane expert
Innovative design & ergonomics
Hydrobull design (e.g. curved shapes, round designs), convenient operation, efficient lever/pump mechanisms, assisted adjustment by worm gear on some slewing jib cranes.
Customer proximity & consulting expertise
Individual special solutions, configurator for special cranes, personal advice, spare parts and service solutions. Demonstration units at the factory in Willich
Convincing examples
Hydrobull HB1000GKFaPoIndustrial counterweight crane with 1,000 kg load capacity, ideal for frequent use. Large free outreach - powerful lever mechanism, manual operation.
- Hydrobull HB300GS90FaPo_800Industrial crane with slewing function and 300 kg lifting capacity - particularly suitable for narrow aisles. No permanent use of outriggers necessary.
Special crane HB500/760UF90TACompact design (width 760 mm, low underride height) for confined working environments.
- Hydrobull ITI500NSmall crane with counterweight, 500 kg load capacity - flexible, ready for immediate use, attractively priced and manufactured to standard.
Conclusion - Why Hydrobull is your first choice
If you are looking for a workshop or industrial crane that has endured for decades, where Safety, quality and stainless steel standard Hydrobull is the brand you can rely on.
90 years of experience = knowledge you can build on.
Strong materials, well thought-out designs and German standards = lower follow-up costs, higher availability.
Great flexibility in consulting services and adaptation of technology = a perfect fit instead of a compromise.
