Tool Holder: Precision Tool Clamping Solutions for CNC Machining

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Tool Holder: Types, Applications, and Selection Tips for Machining Tools

A key component connecting the machine tool spindle and cutting tools, used for transmitting torque and positioning accuracy. Common types include ER collets (elastic design, wide clamping range, ±0.01mm precision for light machining), hydraulic chucks (high rigidity, vibration resistance, suitable for high-speed cutting up to 50,000rpm), and milling chucks (high-precision radial runout ≤0.005mm for milling).
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Advantages of the product

Multi-Material Compatibility

Suitable for a wide range of cutting tools, from HSS drills to carbide end mills. ER collets accommodate tool diameters from 0.5mm to 32mm, while milling chucks support heavy-duty cutting of stainless steel and titanium with radial loads up to 8kN.

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Depending on the interface (taper, cylindrical), tool holders differ in application, in the face of transferring spindle power to cutting tools hold specialized functions. Collet, hydraulic, shrink fit, and bore tools define clamping system while tool holders define the application. Each has a limit in rotation speed with the limit being 100,000 RPM and coolant tolerance which defines the compatibility with coolant fluids. The selection of the tool holders defines and guarantees the life span, surface finish (Ra≤0.8μm), and precision in the machining. This makes them critical in modern CNC machining across countless industries.

Frequently Asked Questions

How do ER collets facilitate tool changes?

ER collets enable tool changes in <15 seconds via nut tightening, ideal for high-mix, low-volume production, and accommodate tool diameters from 0.5mm to 32mm.

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Customer Reviews

Finn

From light milling to heavy cutting, BLUESTAR’s tool holders impressed. Hydraulic chucks handled 8kN radial loads in titanium impeller machining, while ER collets held micro-drills with ±0.01mm accuracy for multi-product lines.

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hsk tool holder hydraulic tool holder shrink fit tool holder bt tool holder adb tool holder
Rigid Anti-Vibration Design

Rigid Anti-Vibration Design

Hydraulic chucks use uniform clamping pressure (50-200bar) to eliminate tool slippage during interrupted cuts, reducing tool breakage by 30% in hard materials like Inconel. Suitable for deep-hole drilling and high-feed milling operations.
Thermal Stability

Thermal Stability

Heat-shrink tool holders maintain dimensional stability at temperatures up to 300°C, with thermal expansion coefficients ≤11×10⁻⁶/°C. Ensures consistent performance in prolonged high-speed machining of aerospace alloys.
Modular Tooling Solutions

Modular Tooling Solutions

Interchangeable collet sets (e.g., ER11-ER50) and adapter kits allow quick reconfiguration for different machine interfaces (BT, HSK, CAT). Reduces inventory costs by 40% in job shops handling diverse machining projects.