EDM‑Specialized Manual Chuck with Integrated Insulated Base – For Macro‑Style Pallets

The PA-21036V-TR is a dedicated EDM workholding solution that combines a high‑precision Macro‑style manual chuck with a built‑in dielectric insulated base. The base has a diameter of Ø130mm and an overall height of 82.5mm, providing robust electrical isolation and ample clearance for EDM setups. You can mount this chuck directly onto the table of any sinker EDM machine without the need for additional insulation plates or custom adapters.

The chuck body is machined from high‑grade Japanese stainless steel and hardened to 57–60 HRC, ensuring excellent wear resistance, long‑term dimensional stability, and consistent clamping performance under repeated EDM cycles. Precision‑ground reference surfaces guarantee repeatable seating of all Macro‑style pallets, centering plates, and electrode holders in both 54×54mm and 70×70mm formats.

The chuck uses a manual drawbar (spanner operated) to generate a reliable 6000 N clamping force, capable of securely holding copper or graphite electrodes as well as workpieces during aggressive flushing. Fixed 4×90° indexing allows rapid orientation changes without losing reference, while the integrated flushing connection supports dielectric fluid flow to improve debris removal and surface finish.

The taller insulated base (82.5mm total height) provides enhanced dielectric isolation distance compared to standard models, reducing the risk of stray current leakage and improving EDM process stability. The base is precision ground and drilled for easy mounting onto most EDM machine tables using standard bolts or T‑slot nuts.

Key Benefits:

• EDM‑Ready Insulation: Built‑in dielectric base eliminates external isolation plates.
• Taller Design: 82.5mm overall height offers improved electrical clearance for demanding EDM applications.
• Full Macro Compatibility: Accepts 54×54mm and 70×70mm Macro‑style pallets and reference elements.
• High Clamping Force: 6000 N ensures stable electrode holding.
• 4×90° Indexing: Quick orientation changes for multi‑position EDM jobs.
• Flushing Connection: Integrated port for dielectric fluid flow.
• Durable Construction: Hardened Japanese stainless steel (57–60 HRC) for long life.
• Easy Mounting: Ø130mm base with pre‑drilled holes fits most EDM tables.

Typical Applications:

• Direct installation on sinker EDM machines for copper/graphite electrode clamping
• Holding workpieces during complex mold and die EDM operations
• Retrofitting conventional EDM tables with a Macro‑style interface
• Semi‑automated EDM cells requiring quick changeover and repeatable positioning

Compatibility:
The PA-21036V-TR is designed for use with all Macro‑style pallets, centering plates, reference elements, and manual spigots. It fully conforms to the industry‑standard Macro interface. The insulated base is specifically designed for EDM environments; do not use on non‑insulated machines without verifying electrical safety.

Note:
Before installation, clean both the EDM table and the insulated base thoroughly. Ensure that the base is electrically isolated from the machine ground as intended. Use the recommended manual spigot (e.g., PA-21003V-TR) and tighten to 6 Nm. Periodically inspect the insulation integrity, especially after heavy use.

Trademark Disclaimer:
Macro® and System 3R® are registered trademarks of their respective owners. Plus Auto Solution is an independent manufacturer. Our products are designed to be interchangeable with systems utilizing Macro‑style interfaces. We are not affiliated with or endorsed by System 3R.