HSK tool holder

shrink fitfor machiningbalanced

Product Overview

• High dynamic balance: balanced to G2.5 at 25,000 rpm; balanced 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
• High accuracy with no distortion after heat treatment: keyway milled after heat treatment
• Durability: up to 3000 clamping cycles with Conprofe Shrink-Fit Machine

Working Principle
Clamping is achieved by thermal expansion and contraction. Heat the tool holder using the Shrink-Fit unit, insert the cutting tool when the inner bore expands, then allow the holder to cool and contract to clamp the tool tightly.
The system directly clamps the cutting tool without mechanical connecting components such as collets or nuts, making it ideal for high-speed machining where accuracy, dynamic balance and clamping rigidity are required.

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

Technical Parameters
Item (Unit: mm) | Standard Type | Slim Type
Clamping Diameter d | 4-20 | 4-12
D | 15-44 | 10-18
D1 | 20-53 | 14-30
L | 60-160 | 65-120
Min. Clamping Length E | 15-48 | 15-42
Max. Clamping Length H | 40-95 | 45-95

Features / Technical specifications

• Clamping Diameter (d): Standard 4-20 mm; Slim 4-12 mm
• D: Standard 15-44 mm; Slim 10-18 mm
• D1: Standard 20-53 mm; Slim 14-30 mm
• L (Length): Standard 60-160 mm; Slim 65-120 mm
• Min. Clamping Length (E): Standard 15-48 mm; Slim 15-42 mm
• Max. Clamping Length (H): Standard 40-95 mm; Slim 45-95 mm
• 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
• Material / Treatment: special alloy steel; special surface treatment for corrosion, wear and rust resistance
• Durability: up to 3000 clamping cycles with Conprofe Shrink-Fit Machine