HSK tool holder

shrink fitmillingfor machining

Overview

• High dynamic balance: balanced to G2.5 at 25,000 rpm and to 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: clamping force up to 2× DIN standard
• Corrosion-, wear- and rust-resistant: special surface treatment
• No distortion after heat treatment: key groove precision-milled post heat treatment
• Durable clamping cycles: up to 3000 clamping cycles with special alloy steel when used with Conprofe Shrink-Fit Machine

Working Principle
Clamping is achieved by thermal expansion and contraction. The tool holder is heated with a Shrink-Fit machine and the cutting tool is inserted while the internal bore expands. After cooling, the holder contracts and secures the tool directly, without mechanical components such as collets or nuts. This principle is suited for high-speed machining requiring high accuracy, dynamic balance and clamping rigidity.

Application Cases
Suitable for clamping various cutting tools in aviation, semiconductor, medical and other industrial machining applications.

Technical Parameters

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

Features / Technical Specifications

• Series: HSK Series
• Material options: Stainless Steel (Ultra Slim variant)
• 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: special treatment for corrosion, wear and rust resistance
• Heat treatment: key groove precision-milled after heat treatment to avoid distortion
• Clamping cycles: up to 3000 times with special alloy steel when used with Conprofe Shrink-Fit Machine
• Clamping diameter range: 4–10 mm
• Wall thickness (Ultra Slim): 1.5 mm
• Length L range: 85–180 mm