ROBA®-guidestop pneumatic: Safety brake and backlash-free, highly rigid clamping unit for profiled rail guides

ROBA®-guidestop pneumatic: Safety brake and backlash-free, highly rigid clamping unit for profiled rail guides

  • Backlash-free
  • High stiffness
  • High holding forces
  • *Switching status monitoring

Safety through direct clamping: ROBA®-guidestop safety brakes clamp directly onto the linear guide with an extremely high degree of rigidity. They are therefore directly mounted onto the moved masses. Drive elements between the motor and the moved mass, such as for example spindles, spindle nuts, shaft couplings or gears, can thus have no influence on safety.

Perfect for vertical axes: Direct clamping onto the linear guide makes the ROBA®-guidestop ideal for application in gravity-loaded axes where hazard risks for people are to be minimized.

Relief for spindle and guide: ROBA®-guidestop takes on the load when the axis is stationary, for example during machining. In this phase, the drive motor can be switched off and removed from the control. This eliminates the control movements and is thus gentle on the ball screw spindle. The closed brake absorbs the axial forces. The lifetimes and maintenance intervals for the drive components are therefore increased.

More accurate with higher cutting capacities: The backlash-free clamping also makes the NC-axis more rigid. This increases process accuracy, increases the cutting capacities and provides advantages during heavy-duty machining. The machining generates less vibration and thus improves the surface quality of the workpiece.


The ROBA®‑guidestop is a pneumatic or hydraulic safety brake.

The ROBA®-guidestop clamps a profiled rail via a spring-loaded device at the exact position required and backlash-free. The brake mechanism is designed for relatively large stroke paths and compensates for production tolerances in profiled rails without loss of braking force. The brake opens hydraulically or pneumatically depending on the operating mode. A high-pressure design is available for pneumatic functioning. This reaches much higher braking torques. The necessary increased air pressure can be achieved through an additionally available mechanical pressure booster.

Product features

  • Application
  • Guide rail brake, designed for standard linear guides
  • Optimal for vertical axes
  • Mounting position
  • On the guide rail
  • Safety
  • Reliable due to fail-safe principle
  • Switching condition monitoring
  • Suitable for EMERGENCY STOP braking
  • Redundancy possible thanks to dual circuit design
  • High CCF value possible
  • Design
  • Pneumatic
  • Benefits
  • Short switching times
  • High degree of rigidity up to the full nominal force
  • High holding forces
  • Backlash-free
  • Construction - Protection class
  • Mechanical: protection IP44
  • Assembly and maintenance
  • Low-maintenance
  • Sound
  • Normally no noise development
  • Duty cycle
  • Can be used for 100 % duty cycle
  • Features
  • 3854/3852/3850:: Two brake circuits for double holding force or redundant design

Application examples

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Chr. Mayr GmbH + Co. KG
Eichenstraße 1, 87665 Mauerstetten, Germany
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