Discover ATEK lever brakes – from proven standard solutions to custom systems for crane, hoisting, and conveyor technology.
What is a lever brake?
Lever brakes are mechanical safety brakes where a spring transmits a braking moment through a lever system to a drum. They operate safely without power (Fail-Safe).
Where are lever brakes used?
Primarily in cranes, winches, hoists, steelworks, and shipping installations – wherever loads must be held or safely stopped.
How is the braking moment adjusted?
Via adjustment screws or spacers on the lever arm; ATEK optionally provides pre-set braking moments from the factory.
Which standards are relevant?
DIN 15435, EN 14492-1, and the Machinery Directive (EU) 2023/1230 define design, testing, and documentation.
How often must a lever brake be maintained?
ATEK recommends visual inspection every 3 months und pad inspection every 12 months or after 10,000 braking actions.
Can old systems be retrofitted?
Yes, ATEK offers retrofit kits with suitable adapter plates and documentation for existing machines.
Who is allowed to perform installation and maintenance?
Only qualified personnel according to VDE 0105/IEC 364.Fail-Safe technology stops loads even in case of power failure.
Adjustable braking moment from 50 Nm to 20,000 Nm.
Modular system reduces delivery times by 30%.
Lever brakes secure loads in seconds and prevent dangerous overrunning of winches or rope drums.
ATEK combines decades of experience in brake manufacturing with state-of-the-art material technology. Our lever brakes are designed for harsh environments and impress with maintenance-friendly design.Are you looking for the optimal lever brake for your application?
Request a drive solution now!
Understand: Operating principle & advantages of lever brakes
Introduction to Lever brakes
Why a lever brake?
In hoists, the load must be held safely even in case of power failure. Spring-powered lever brakes reliably meet this requirement.
Construction principle
Spring pressure acts through a toggle lever on brake shoes that wrap around the drum housing. An electromagnetic or hydraulic solution releases the brake.Analyze: Designs & Selection Criteria
Types and selection of Lever brakes
designs
- Spring pressure drum brakes
- Hydraulically released versions
- Magnetic disc lever brakes
Selection criteria
Braking moment, drum diameter, installation space, release force, and environmental conditions (e.g. IP55, -40 °C to +80 °C).Select: Sizing & Calculation
Calculation of the braking moment
ATEK uses DIN 15435 formulas: MB ≥ 1.5 × Mdyn. We advise on moments of inertia, safety factors, and pad selection.
Brake linings
Asbestos-free sintered or organic linings, friction coefficient 0.35 – 0.45.Implement: Installation & Maintenance
Installation & Maintenance
Installation instructions
- Mounting bolts with 8.8 or higher
- Clearance pad/drum ≤ 0.4 mm
- Integrate release magnet in safety chain
Maintenance
Pad replacement thanks to cassette system in < 20 min. No relubrication required.Orient: Industries & Application Examples
Industries & Examples
Crane industry
ATEK lever brakes secure harbor cranes up to 400 t lifting capacity.
Steelworks
Heat-resistant special linings for up to 600 °C radiation temperature.
Wind energy
Yaw systems use fail-safe drum brakes for storm safety.Benefit: Case Study & Outlook
Practice & Future
Case Study: Harbor Crane Retrofit
After retrofitting to ATEK lever brakes, the overrunning distance was reduced by 70% – annual accident costs decreased by 40%.
Future Trend
Sensor-supported brakes monitor lining thickness in real-time. ATEK is currently testing IoT-capable prototypes.
Conclusion
Lever brakes ensure maximum safety, reduce operating costs, and meet future Industry 4.0 requirements.
