Identify the interface
Start with the complete chuck and pallet system: EROWA-compatible ITS, System 3R-compatible MacroStd or another confirmed interface. A similar holder shape does not establish compatibility.
Engineering guide
Select the holder from the complete EDM interface.
Compare the workholding system, holder format, supplied material and handling method before choosing an electrode holder for a manual or automated setup.
Selection sequence
Five checks before choosing a holder.
Start with the installed interface, then verify every downstream connection through to the electrode and handling method.
Confirm the holder format
Record the required format or size, such as U15, U20 or S30, and compare the complete mounting arrangement rather than relying on the family name alone.
Match the supplied material
Confirm whether the selected PLUS AUTO model is aluminum, stainless steel or brass, then verify that material against the electrode, machining process and handling requirement.
Review handling
If the holder will be loaded by a gripper or automation cell, confirm the gripper geometry, pickup orientation, available clearance and the complete transfer sequence.
Send evidence when uncertain
Provide the current chuck, holder or original reference together with the machine, application, drawing and clear mounting-side photos for a product-specific review.
Reference examples
Compare holders by interface and application.
These models illustrate different holder arrangements. They are not interchangeable without a complete setup review.
Compatibility FAQ
Resolve the details that a product image cannot show.
Use the current installation and verified model data as the reference point.
Can the holder family name alone confirm compatibility?
No. Confirm the chuck interface, holder format, mounting geometry, drawbar or spigot arrangement and any gripper or automation requirements.
Does one material suit every electrode application?
No. Use the material stated for the selected PLUS AUTO model and review it against the electrode, machining process, handling method and required service conditions.
What should I send for a holder selection review?
Send the current chuck and holder, original reference if available, machine and application, target holder size, quantity, drawing and installation photos where the fit is uncertain.
Independent manufacturer notice
EROWA and System 3R names and references are used only to identify compatibility. PLUS AUTO is an independent manufacturer and is not affiliated with or endorsed by either company.