High-Performance Manual Chuck for Macro-Style Workholding Systems

The PA-21031V-TR is a precision manual chuck designed for Macro-style automation systems. It serves as the foundation for workholding in manual or semi-automated machining cells, providing a stable and repeatable interface for pallets, reference elements, and electrode holders.

Constructed from high-grade Japanese stainless steel and hardened to 57–60 HRC, this chuck delivers exceptional wear resistance, corrosion protection, and long-term accuracy. The precision-ground reference surfaces ensure consistent seating of Macro-style components, while the robust clamping mechanism delivers a locking force of 6000 N—sufficient for a wide range of machining applications.

The chuck features fixed index positions at 4×90°, allowing for quick orientation changes without losing reference. An integrated flushing connection enables coolant or EDM dielectric fluid to be directed through the system, improving chip evacuation and machining performance.

Designed for easy mounting on machine spindles or fixtures via the included mounting flange, the PA-21031V-TR is ready to integrate into new or existing setups. It is compatible with Macro-style manual spigots (drawbars) such as PA-21003V-TR, and requires a simple 6 Nm tightening torque for secure locking.

Key Benefits:

• High Clamping Force: 6000 N locking force ensures secure holding for heavy workpieces and aggressive machining.
• Precision Ground References: Guarantees repeatable positioning and interchangeability with Macro-style components.
• Indexing Capability: 4×90° fixed positions allow rapid workpiece or electrode orientation.
• Flushing Ready: Integrated connection supports coolant or EDM fluid flow for enhanced process efficiency.
• Superior Durability: Japanese stainless steel with 57–60 HRC hardness withstands daily shop floor use.
• Cost-Effective: Delivers reliable performance at a competitive price compared to branded alternatives.

Typical Applications:

• Manual workholding on milling machines, machining centers, and EDM
• Fixture mounting for quick changeover in mold making
• Semi-automated cells requiring consistent reference positioning
• Electrode and workpiece clamping with Macro-style pallets

Compatibility: The PA-21031V-TR is designed for use with Macro-style pallets, centering plates, reference elements, and manual spigots. It is fully compatible with systems utilizing the industry-standard Macro interface. For automated applications, consider the corresponding automatic chuck version.

Note: For optimal performance, use with recommended manual spigot (PA-21003V-TR) and tighten to 6 Nm. Ensure mounting surfaces are clean before installation.

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.