Threaded End / Tool Interface: Maximum RPM 5000-30000 RPM

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

Parameter	Typical range	Notes & selection driver
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)

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

ISO 7388, DIN 69871, ANSI B5.50, JIS B6339

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

Typical Suppliers & Equivalents

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

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Threaded End / Tool Interface

Manufacturer profiles associated with Threaded End / Tool Interface.

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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.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

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.

Threaded End / Tool Interface