HSK tool holder

shrink fitfor machiningbalanced

Product Overview

• High dynamic balance: balanced to G2.5 at 25,000 rpm; G1.0 at 60,000 rpm
• High precision: extra-long design; tool holder runout ≤0.001 mm; runout accuracy within 0.003 mm at 4×D
• High clamping force: up to 2× DIN standard
• Corrosion-proof, wear-resistant and rust-proof surface treatment
• Precise key-groove milling after heat treatment to prevent distortion
• Durable clamping cycles: up to 3,000 clampings with special alloy steel and Conprofe Shrink-Fit Machine

Working Principle
Clamping is achieved by thermal expansion and contraction: the tool holder is heated with the Shrink-Fit unit, the tool is inserted while the bore is expanded, and after cooling the holder contracts to clamp the tool directly without collets or nuts. This design is suited to high-speed machining requiring accuracy, dynamic balance and clamping rigidity.

Application Cases
Suitable for clamping various cutting tools in aerospace, semiconductor, medical and other industrial sectors.

Technical Parameters

• Clamping diameter d: 4–10 mm (Standard / Ultra Slim)
• D: 10–22 mm (Standard) / 7–13 mm (Ultra Slim)
• D1: 25–42 mm (Standard) / 25–36 mm (Ultra Slim)
• L: 85–180 mm
• M: 42–67 mm (Standard) / 42–97 mm (Ultra Slim)
• Min. clamping length E: 12–30 mm
• Wall thickness t: 3–6 mm (Standard) / 1.5 mm (Ultra Slim)

Specifications / Technical details

• Series: HSK Series
• Material: Stainless steel (Standard)
• Dynamic balance: G2.5 at 25,000 rpm; G1.0 at 60,000 rpm
• Runout: tool holder runout ≤0.001 mm; runout accuracy within 0.003 mm at 4×D
• Clamping force: up to 2× DIN standard
• Surface treatment: corrosion-proof, wear-resistant, rust-proof
• Heat treatment: fine milling of key groove after heat treatment to avoid distortion
• Clamping cycles: up to 3,000 with special alloy steel and Conprofe Shrink-Fit Machine