Precise Fit, Steady Flow:
SVS Standards for Electrode Arms
Electrode arms are produced with tight tolerances and integrate precisely into the welding gun system. Their rigid construction ensures dimensional stability under load and thermal stress. This guarantees consistent and reliable transmission of current and force to the electrode.
Available as standard version or custom-made based on your drawings or samples. Geometry, interfaces and material are precisely matched to your requirements.
Catalog
Standard Configurations
This copper-chromium-zirconium alloy (WIRBALIT® HF/N/G) combines high conductivity with mechanical strength. Suitable for stationary guns in continuous operation or under increased thermal load.
CuCrZr Electrode Arms
This copper-chromium-zirconium alloy (WIRBALIT® HF/N/G) combines high conductivity with mechanical strength. Suitable for stationary guns in continuous operation or under increased thermal load.
CuCrZr Electrode Arms
Lightweight aluminum reduces the moving mass and drives. Suitable for robotic or fast-cycling guns with moderate current and force requirements.
Aluminum Electrode Arms
Lightweight aluminum reduces the moving mass and drives. Suitable for robotic or fast-cycling guns with moderate current and force requirements.
Aluminum Electrode Arms
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We ensure the quality of your welding processes.
We process highly conductive copper components with a defined and verified purity level. All current-carrying surfaces are precisely machined and optimized for minimal contact resistance.
All components are manufactured in Germany and precisely matched to your application. Standard designs are available from stock, ensuring short delivery times and maximum flexibility.
Tight tolerances, stable production equipment, and consistent clamping conditions ensure reliable dimensional accuracy and repeatable results across all production runs.
Our products are subject to strict quality inspections. For special requirements, individual tests are carried out according to defined specifications.
Flexibility is our strength. Our products are available in numerous variants and can be manufactured with high precision to fit your system requirements.
For decades, we have contributed our expertise to SVS products and, as an active member of the German Welding Society (DVS), have helped shape technical standards.
SVS Capabilities
For over 60 years, we have been a reliable partner for manufacturers worldwide in welding technology.
Fundamentals
Function of Electrode Arms in Spot Welding
Electrode arms conduct welding current from the transformer to the electrode, apply welding force to the component and dissipate process heat. During each weld pulse, they press the electrode onto the workpiece, ensuring controlled transfer of current and pressure into the joint. Internal cooling channels carry water through the arm, preventing thermal overload at the contact points.
Key Parameters of Electrode Arms
Reliable current transfer under mechanical load requires materials with excellent conductivity, high strength and thermal resistance. CuCrZr is preferred for applications with high current density and thermal stress. Aluminum is suitable for systems under dynamic loads where low weight and fast motion are critical.
Only precisely manufactured electrode arms allow for strain-free assembly and ensure stable electrode contact. Even small deviations can lead to contact issues, unstable current flow, and inconsistent weld results.
The arm’s mechanical rigidity directly affects force transmission. Only form-stable components maintain alignment and secure repeatable welding conditions in every cycle.
Arms must be precisely configured in length, geometry and interfaces to match the welding gun, transformer and cooling setup. This ensures consistent performance under continuous use.
