INDUSTRY COMPONENT

Threaded End / Tool Interface

Threaded end or tool interface connecting cutting tools to spindle in machining centers.

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Component Specifications

Definition
A precision-machined threaded interface component that forms the mechanical connection between a machine tool spindle and cutting tools or tool holders. It transmits torque, axial force, and rotational motion while maintaining precise alignment and concentricity during high-speed machining operations.
Working Principle
Utilizes standardized tapered and threaded surfaces to create a rigid, self-centering connection between spindle and tool. The interface employs mechanical clamping through thread engagement and often incorporates a drive key system to transmit torque without slippage.
Materials
High-strength alloy steel (typically AISI 4140, 4340, or similar), heat-treated to HRC 45-50 for wear resistance and toughness. Surface treatments may include nitriding or hard chrome plating for enhanced durability.
Technical Parameters
  • Maximum RPM 5000-30000 RPM
  • Taper Angle 7:24, 1:10, or other standardized tapers
  • Thread Size Common: M16, M20, 1-1/4"-7, etc.
  • Thread Type Metric (M), Inch (UNC/UNF), or Special (e.g., BT, CAT, HSK)
  • Surface Finish Ra ≤ 0.8 μm on critical surfaces
  • Concentricity Tolerance ≤0.005 mm TIR
  • Drive Key Configuration Single or multiple keys, splines
  • Maximum Torque Capacity 200-2000 Nm (depending on size)
Standards
ISO 7388, DIN 69871, ANSI B5.50, JIS B6339

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Threaded End / Tool Interface.

threaded tool interface spindle connection machine tool interface tool holder connection precision machining components industrial spindle parts Threaded End / Tool Interface Threaded End / Tool Interface in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Spindle

A rotating shaft that transmits torque and motion within a rotary capping head assembly.

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Engineering Analysis

Risks & Mitigation
  • Thread stripping under excessive torque
  • Fatigue failure from cyclic loading
  • Corrosion in coolant environments
  • Thermal expansion mismatch
  • Contamination leading to improper seating
FMEA Triads
Trigger: Improper tool installation or over-torquing
Failure: Thread deformation or stripping
Mitigation: Use torque wrenches, follow manufacturer specifications, implement operator training
Trigger: Coolant contamination in thread interface
Failure: Reduced clamping force and increased runout
Mitigation: Regular cleaning protocols, use of protective caps, proper coolant filtration
Trigger: Material fatigue from high-cycle operations
Failure: Crack initiation and propagation
Mitigation: Regular inspection, material upgrades, stress relief treatments

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
Thread pitch tolerance: ISO 965 Class 6g/6H; Taper angle tolerance: ±0.0005°; Concentricity: ≤0.005 mm TIR
Test Method
Coordinate measuring machine (CMM) verification, thread gauge inspection, taper contact pattern testing, torque-to-yield testing, dynamic balance testing

Procurement Evaluation Criteria

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

Technical documentation
4/5
Manufacturing capability
4/5
Inspection readiness
5/5
Supplier transparency
3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

What are the main types of threaded tool interfaces?

Common types include BT (MAS BT), CAT (V-flange), HSK (hollow shank taper), and CAPTO interfaces, each with specific thread configurations and taper designs for different applications.

How does thread wear affect machining accuracy?

Thread wear leads to reduced clamping force, increased runout, and vibration during cutting, resulting in poor surface finish, dimensional inaccuracies, and potential tool breakage.

What maintenance is required for threaded interfaces?

Regular cleaning of threads and contact surfaces, inspection for wear or damage, proper lubrication (if specified), and periodic torque verification of clamping mechanisms.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

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