Spring Brakes with Noise Optimization for Precision Motion Control

[Ahmet Ö.]

## Noise-Optimized Spring-Applied Brakes for Precise Motion Control

Dunkermotoren has enhanced acoustic performance and safety in automated driving systems by integrating an optimized drive design into its E90R LN spring-applied brake model. This brake stands out as a critical safety component in industrial automation and medical technology.

### E90R LN Brake Mechanism
The E90R LN is a spring-applied brake that operates on a fail-safe principle in the event of a power outage. When the system loses power, springs press against the brake plate, activating the braking action. When electrical power is restored, the integrated electromagnetic coil overcomes the spring force, pulling the brake plate away from the friction surface and releasing the shaft. This structure ensures that the drive remains locked during emergency stops or power loss.

### Acoustic Optimization and Technical Improvements
In response to the demand for low noise levels in medical and high-precision applications, Dunkermotoren minimized mechanical play by redesigning the internal geometry of the drive. This significantly reduced the vibration and noise levels generated by the brake during cyclical operation. According to Product Manager Michael Burgert, noise control has now become a prominent factor for operator comfort and as a quality criterion, and the new design offers mechanical stability to meet this need.

### Application Areas and System Integration
Thanks to its compact design, the E90R LN can be easily integrated into existing automotive data ecosystems with modular drive components. It is particularly common in sectors requiring high cycle counts and precise positioning:

• Medical devices: Quiet diagnostic imaging and adjustable platforms for patient comfort
• Packaging and automation: High-speed sorting requiring mechanical durability and fast response times
• Conveyor systems: Vertical lifting and inclined surfaces for load safety

### Technical Specifications

• Operating principle: Fail-safe spring-applied brake
• Release mechanism: Integrated magnetic coil
• Noise reduction: Minimization of mechanical play between the drive and brake plate
• Application-focused: Medical technology, packaging, conveyor systems
• Compliance: Adherence to VDA and other regulatory body standards

These design improvements enable the brake to provide predictable response times and less wear on friction surfaces, thereby increasing the safety and performance of automated industrial systems.