Trade fair highlight 28. September 2022

Ultra-Precision Aerostatic Tool Spindle HSK25: (U)ASD-H25(A)

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(U)ASD-H25 - Front view
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(U)ASD-H25 - Rear view (radially outgoing spindle connections)
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(U)ASD-H25A - Front view
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(U)ASD-H25A - Rear view (axially outgoing spindle connections)
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Ultra-precise aerostatic tool spindles with automatic HSK-E25 tool clamping and radially or axially outgoing spindle connections.

Our ASD-H25 and UASD-H25 models meet all the demands placed on a high-quality spindle for producing optical quality surfaces and the highest accuracies. They combine the robustness and functionality of multi-axis CNC machining with high speeds for micromachining and the lowest error motion values for machining optical components. The spindles have the following features:

- An automatic and springless HSK-E25 tool interface.
- A high-resolution rotary encoder
- A highly efficient thin-film liquid cooling system
- A clamping condition monitoring as well as over a standardized housing diameter

As a result, in CNC machining, the user gets unprecedented precision, thermal stability, and the ability to machine optical surfaces in milling and grinding applications. In contrast, in ultra-precision machining, the user gets high clamping decreases, and an automated tool change for a significant increase in productivity and automation.

Key facts at a glance:

- Rated speed: 60,000 rpm, 80,000 rpm or 90,000 rpm.
- Connections: radial or axial
- Housing diameter: 100 mm
- Overall length: 408 mm/ 472 mm
- Weight: 16 kg
- Tool interface: HSK-E25, automatic, springless (SLH25)
- Tool change system: pneumatic, 4bit clamping condition monitoring, cone cleaning air
- Cooling: thin-film liquid cooling
- High-pressure aerostatic technology (UASD-H25A) for 300% more load capacity and stability (optional)
- Dynamic runout at the tool < 0.5 µm
- Rotational fidelity (error motion) < 30 nm