INDUSTRY COMPONENT

Body Block

A precision component that connects cutting tools to machine tool spindles in machining centers.

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Component Specifications

Definition
The body block is the main structural component of a tool holder system, designed to securely interface between the machine tool spindle and the cutting tool. It provides precise alignment, torque transmission, and vibration damping during high-speed machining operations. Engineered with tight tolerances, it ensures tool stability and repeatability in metal cutting applications.
Working Principle
The body block operates by creating a rigid mechanical connection between the machine spindle and cutting tool through a tapered interface (typically HSK, CAT, or BT standards). It transmits rotational force from the spindle to the tool while maintaining concentricity and minimizing runout. Internal mechanisms (like collets or hydraulic systems) secure the tool, while external features align with the spindle's drive keys and retention system.
Materials
High-strength alloy steel (e.g., 4140, 4340) or tool steel, heat-treated to HRC 45-55 for durability and wear resistance. Some premium versions use carbide-reinforced composites or ceramic coatings for enhanced performance.
Technical Parameters
  • Weight 0.8-3.5 kg
  • Taper Type HSK-A63, CAT40, BT30
  • Maximum RPM 15000-40000
  • Runout Tolerance <0.003 mm
  • Tool Clamping Force 15-30 kN
  • Coolant Through Capability Yes/No
Standards
ISO 7388, DIN 69893, ANSI B5.50

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Body Block.

tool holder body block CNC tool holder component machine tool spindle interface HSK body block precision machining component industrial tooling Body Block Body Block in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Tool Holders

Mechanical fixtures that securely mount cutting tools onto a rotating cutting drum.

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Engineering Analysis

Risks & Mitigation
  • Tool slippage during high-torque operations
  • Thermal expansion affecting precision
  • Fatigue failure from cyclic loading
  • Contamination of taper interface
FMEA Triads
Trigger: Improper cleaning of taper interface
Failure: Reduced clamping force and tool slippage
Mitigation: Implement regular cleaning protocols and use protective caps
Trigger: Excessive spindle speed beyond rating
Failure: Catastrophic failure due to centrifugal forces
Mitigation: Adhere to manufacturer RPM limits and implement speed monitoring

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
±0.001 mm for critical dimensions, <0.003 mm runout at tool tip
Test Method
Laser interferometry for runout measurement, torque testing for clamping force, dynamic balancing to ISO 1940 G2.5

Buyer Feedback

★★★★☆ 4.5 / 5.0 (21 reviews)

"Standard OEM quality for Machinery and Equipment Manufacturing applications. The Body Block arrived with full certification."

"Great transparency on the Body Block components. Essential for our Machinery and Equipment Manufacturing supply chain."

"The Body Block we sourced perfectly fits our Machinery and Equipment Manufacturing production line requirements."

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Frequently Asked Questions

What is the primary function of a body block in tool holders?

The body block provides the structural connection between the machine spindle and cutting tool, ensuring precise alignment, torque transmission, and vibration control during machining operations.

How do I select the right body block for my machining application?

Consider spindle interface type (HSK/CAT/BT), required RPM, tool clamping mechanism, material compatibility, and precision requirements. Match specifications to your machine tool's capabilities and cutting operations.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Get Quote for Body Block

Bobbin Body Casting