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
