Shrink fit technology represents one of the highest standards of tool holding in modern CNC machining. Bilz, a global pioneer in tool clamping systems from Germany, delivers world-class shrink fit solutions engineered for extreme precision, rigidity, and superior performance.
At Indra Engineering Services, we proudly supply Bilz Shrink Fit Holders including the 160 GPL model shown above.
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⭐ What is a Shrink Fit Holder?
A shrink fit holder uses thermal expansion to clamp a cutting tool with exceptional accuracy.
The tool holder is heated (typically using a Bilz ISG shrink machine), the bore expands, the carbide tool is inserted, and as it cools, it contracts to grip the tool uniformly around its entire diameter.
This method provides a full 360° contact between the tool shank and the holder, creating unmatched gripping strength and concentricity.
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🔧 Key Advantages of Bilz Shrink Fit Holders
✔ 1. Ultra-High Clamping Force
Bilz shrink holders generate exceptionally high torque capacity with uniform clamping, ensuring rigid, vibration-free machining even at high speeds.
✔ 2. Maximum Concentricity (≤ 0.003 mm)
Industry-leading runout accuracy provides:
• Better surface finish
• Extended tool life
• Reduced spindle load
✔ 3. High-Speed Stability
Balanced for high RPM applications (25, 000–40, 000 rpm, depending on model), they ensure safe and stable machining at extreme speeds.
✔ 4. Slim Geometry for Deep Cavity Machining
Models like the 160 GPL offer slim, long-reach designs ideal for:
• Mold & die cavities
• Deep pockets
• Narrow machining zones
The smooth surface and taper accuracy ensure consistent tool engagement and minimal deflection.
✔ 5. Superior Surface Finish
Because of perfect runout and rigidity, shrink holders deliver:
• Mirror finishes
• Minimal chatter
• Excellent dimensional accuracy
✔ 6. Maintenance-Free & Long Life
Shrink fit holders have no moving parts, making them extremely reliable with long operational lifespan.
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💡 Applications
Bilz Shrink Fit Holders are widely used in:
• Aerospace components
• Die & mold machining
• Precision automotive parts
• High-speed milling
• Tool rooms and production machining
Perfect for solid carbide end mills, drills, and reamers.
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🏭 Why Choose Bilz Shrink Fit (German Quality)?
Bilz is globally recognized for:
• Precision machining
• Heat-treated alloy steel bodies
• Tight manufacturing tolerances
• Surface finish and taper accuracy
• Consistent clamping even after thousands of cycles
German quality—combined with competitive Indian pricing through local supply—makes Bilz the best in shrink fit technology.
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🤝 Available at Indra Engineering Services
As an Authorised Channel Partner for Bilz, we provide:
• Shrink Fit Holders (GPL, GPR, long, standard & slim types)
• Shrink Fit Machines (ISG series)
• Technical support for selection & application
• Guidance on shrink length, tool diameters & balancing grades
The 160 GPL Bilz Shrink Holder displayed above is one of our most in-demand models for long-reach, high-speed carbide milling.
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📞 Contact: 90470 13803
🌐 www.coimbatorecnctools.in
