Lever‑Operated Manual Chuck for Macro‑Style Pallets (54×54 & 70×70)

The PA-21034V-TR is a unique manual chuck that bridges two worlds: it combines the convenience of a lever‑operated quick‑change mechanism with the standardized Macro pallet interface (54×54mm and 70×70mm). This design allows users who prefer the speed and ergonomics of a handle lock to directly benefit from the extensive Macro‑style tooling ecosystem.

Instead of using a separate spanner or drawbar, the PA-21034V-TR features a robust lever locking system integrated into the chuck body. A simple pull‑and‑rotate action securely clamps or releases the pallet with a repeatable 6000 N clamping force. This eliminates the need for additional tools, reduces changeover time, and is particularly advantageous in manual or semi‑automated cells where speed and ease of use are priorities.

The chuck body is precision‑machined from high‑grade Japanese stainless steel and hardened to 57–60 HRC, ensuring exceptional wear resistance, long‑term dimensional stability, and consistent clamping performance even under daily shop floor conditions.

With a compact outer diameter of Ø100mm and a height of only 49.5mm, the PA-21034V-TR fits easily on most machine tables. It provides fixed 4×90° indexing positions, allowing rapid workpiece or electrode orientation changes without losing reference. An integrated flushing connection is also included to support coolant or EDM dielectric fluid flow.

Designed specifically for Macro‑style pallets, this chuck works seamlessly with both 54×54mm and 70×70mm reference elements, centering plates, and electrode holders. It is an ideal solution for shops that have standardized on the Macro system but want the operational convenience of a lever‑operated chuck.

Key Benefits:

• Fast Lever Locking: No spanner required – simple handle operation cuts changeover time.
• High Clamping Force: 6000 N ensures secure holding for electrodes and workpieces.
• Macro Compatibility: Directly accepts 54×54mm and 70×70mm Macro‑style pallets.
• Precision Ground References: Guarantees repeatable positioning and interchangeability.
• Indexing Capability: 4×90° fixed positions allow quick orientation adjustments.
• Flushing Ready: Integrated connection supports coolant or dielectric fluid.
• Durable Construction: Hardened Japanese stainless steel (57–60 HRC) for long life.
• Compact Design: Ø100mm body fits tight machine tables without interference.

Typical Applications:

• Manual workholding on milling machines, EDM, and machining centers using Macro pallets
• Quick‑change electrode and workpiece setups in mold making
• Retrofitting existing lever‑style chuck positions to accept Macro tooling
• Cells where operators prefer handle‑operated clamping over spanner tightening

Compatibility:
The PA-21034V-TR is designed for use with all Macro‑style pallets, centering plates, and reference elements with 54×54mm or 70×70mm footprints. It is fully compatible with industry‑standard Macro interfaces but uses an integrated lever mechanism instead of a separate drawbar.

Note:
To ensure optimal clamping force and repeatability, periodically inspect the lever mechanism for debris. Clean the chuck interface and pallet surfaces before each use. The chuck is not designed for use with automatic (pneumatic) operations – manual lever operation only.

Trademark Disclaimer:
Macro® and System 3R® are registered trademarks of their respective owners. The lever mechanism design is independent. 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.