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Dongguan Cangtian Hardware Machinery Co., LTD
KURATATools-Leading Manufacturer of High-Precision Clamping Systems

KURATATools-Leading Manufacturer of High-Precision Clamping Systems

KURATA Tools specializes in the R&D, production, and sales of high-precision clamping systems for CNC machine tools.

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SK40 Tool Holder
  • SK40 Tool Holder

SK40 Tool Holder

The SK40 Tool Holder is a high-precision tool clamping system widely used in CNC machining, milling, and end-mill operations. Designed for durability and stability, the SK40 Collet Holder ensures secure tool retention while maintaining minimal runout, making it ideal for high-speed and precision machining.
  • Product Details

The SK40 Tool Holder, including SK40 Collet Holder, SK40 ER Collet Holder, SK40 Milling Tool Holder, and SK40 CNC Milling Holder, is a high-precision, durable, and versatile solution for CNC and milling applications. Backed by trusted SK40 Tool Holder Suppliers and SK40 Tool Holder Manufacturers, it delivers reliable performance, excellent clamping force, and broad compatibility, making it ideal for aerospace, automotive, mold manufacturing, and industrial machining applications.

SK40 Tool Holder

Core Advantages

1. High Precision

SK40 Precision Tool Holder is manufactured to tight tolerances, ensuring accurate tool alignment, minimal vibration, and excellent surface finish during machining.

2. Strong Clamping Force

The taper design, commonly referred to as SK40 Taper, provides uniform clamping across the tool shank, preventing slippage and enhancing machining stability.

3. Superior Material

Made from high-grade alloy steel with hardened and ground surfaces, the SK40 Tool Holder offers exceptional durability, corrosion resistance, and long service life.

4. Versatility

SK40 CNC Milling Holder is compatible with ER Collets, end mills, and other precision cutting tools, making it suitable for a wide range of machining operations.

5. Ease of Use

Quick tool changes are enabled by the SK40 system’s standardized design, improving efficiency in high-volume production environments.


Typical Applications

  • CNC Machining: Milling, drilling, and precision cutting

  • Mold & Die Manufacturing: High-tolerance component production

  • Aerospace: Precision parts for aircraft and aerospace components

  • Automotive: Engine parts, transmission components, and other high-precision applications

  • General Metalworking: Stainless steel, aluminum, and alloy machining

The SK40 Tool Holder is ideal wherever precision, reliability, and repeatable performance are critical.


Core Selling Points

  1. Precision Engineering – minimal runout for high accuracy machining

  2. Durable Construction – hardened alloy steel resists wear and corrosion

  3. Wide Compatibility – works with SK40 Collet Holders, ER Collets, and CNC milling tools

  4. Quick Tool Change – standardized SK40 taper ensures efficiency

  5. Trusted Suppliers & Manufacturers – globally recognized quality


Technical Specifications

FeatureSpecification
Tool Holder TypeSK40 Tool Holder / SK40 Milling Tool Holder
MaterialHigh-grade alloy steel
TaperSK40 Taper
Collet CompatibilitySK40 Collet Holder, SK40 ER Collet Holder
PrecisionRunout ≤ 0.005 mm
Tool Diameter Range1 mm – 32 mm (custom sizes available)
Max RPMUp to 20,000 (depending on tool and machine)
Surface TreatmentHardened & ground, corrosion-resistant

SK40 Tool Holder Dimensions vary depending on model and collet size, but all conform to SK40 standard taper specifications for consistency and interchangeability.


Applications / Industries

  • CNC Machining & Milling

  • Mold & Die Making

  • Aerospace & Aviation Components

  • Automotive & Precision Engineering

  • Electronics & Tooling Workshops

  • General Metalworking and Prototyping


Comparison / Advantage over Other Tool Holder Standards

FeatureSK40 Tool HolderBT40 / CAT40 Tool HolderHSK Tool Holder
PrecisionHigh (≤0.005 mm runout)MediumHigh
Clamping ForceStrong & uniformModerateHigh
Tool Change EfficiencyFastModerateModerate
Taper StandardSK40BT40 / CAT40HSK
DurabilityHardened alloy steelStandard steelHigh-quality steel

SK40 Tool Holder stands out for its combination of precision, stability, and broad compatibility, making it a preferred choice for high-accuracy CNC machining applications.


FAQ – Common Questions

Q1: What is an SK40 Tool Holder?
A: The SK40 Tool Holder is a precision CNC and milling tool clamping system, compatible with ER collets, end mills, and other cutting tools. It includes SK40 Collet Holder, SK40 ER Collet Holder, and SK40 Milling Tool Holder.

Q2: What are SK40 Tool Holder Dimensions?
A: Dimensions depend on the model and collet size, but all conform to the SK40 taper standard to ensure tool compatibility and interchangeability.

Q3: How does SK40 Taper work?
A: The SK40 taper provides uniform clamping by aligning the tool shank with the taper angle in the holder, ensuring precision and minimal runout.

Q4: Who supplies SK40 Tool Holders?
A: Certified SK40 Tool Holder Suppliers and SK40 Tool Holder Manufacturers provide genuine SK40 holders for CNC and milling applications worldwide.

Q5: Can SK40 Tool Holders be used for high-speed milling?
A: Yes, with proper tooling and machine setup, SK40 CNC Tool Holders are suitable for high-speed and high-precision milling operations.

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KURATA Tools specializes in the R&D, production, and sales of high-precision clamping systems for CNC machine tools.

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