Shrink Fit Tool Holders are advanced CNC tool holding solutions designed for extreme accuracy, high-speed machining, and superior rigidity. The holder grips the cutting tool by thermal expansion—the bore expands when heated and clamps the tool tightly as it cools, ensuring near-zero runout and exceptional balance.
Asmita Industries manufactures high-precision Shrink Fit Tool Holders suitable for demanding applications in aerospace, die & mold, medical, and high-speed CNC machining.
Available Types
- BT Shrink Fit Tool Holder (BT30 / BT40 / BT50)
- HSK Shrink Fit Tool Holder
- CAT Shrink Fit Tool Holder
- SK / ISO Shrink Fit Tool Holder
- Slim Shrink Fit Holder (Deep cavity machining)
- Coolant Through Shrink Fit Holder
- Custom Shrink Fit Holders (as per drawing)
Key Features
- Runout ≤ 0.003 mm (often ≤ 0.002 mm)
- Excellent balance for high RPM machining
- Very high gripping force (360° clamping)
- Slim nose design for better tool reach
- No collet, no moving parts → maximum rigidity
- Ideal for finishing & semi-finishing
Applications
- High-speed CNC milling
- Die & mold finishing
- Aerospace & medical components
- Precision aluminum & hardened steel machining
- Micro and small diameter tools
Technical Specifications (Typical)
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Parameter
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Specification
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Standards
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BT / HSK / CAT / SK
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Sizes
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BT30, BT40, BT50
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|
Bore Range
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Ø3 mm to Ø32 mm
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Runout
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≤ 0.003 mm
|
|
Balancing
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G2.5 @ 25,000 RPM
|
|
Material
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High-strength alloy steel
|
|
Coolant
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Through-coolant optional
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Advantages Over Other Tool Holders
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Holder Type
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Accuracy
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Speed
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Rigidity
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|
Shrink Fit
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⭐⭐⭐⭐⭐
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⭐⭐⭐⭐⭐
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⭐⭐⭐⭐⭐
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Hydraulic
|
⭐⭐⭐⭐
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⭐⭐⭐⭐
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⭐⭐⭐⭐
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ER Collet
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⭐⭐⭐
|
⭐⭐⭐
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⭐⭐⭐
|
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Side Lock
|
⭐⭐
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⭐⭐
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⭐⭐⭐⭐
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Why Choose Asmita Industries Shrink Fit Tool Holders?
- ✅ Precision manufacturing with tight tolerances
- ✅ High-speed balanced holders
- ✅ Custom bore, projection & taper options
- ✅ Export-quality standards
- ✅ Competitive Indian pricing
