Coupling Probe/Pin: Load Capacity Up to 500 N·m

Component Specifications

Definition

A coupling probe or pin is a critical component in input/output couplers designed to ensure precise alignment and secure connection between rotating or stationary machine elements. It functions as a male connector that engages with corresponding female receptacles to transmit torque, motion, or signals while maintaining positional accuracy and minimizing misalignment forces.

Working Principle

The coupling probe/pin operates on the principle of mechanical interference fit or keyed engagement. When inserted into a mating receptacle, it creates a rigid connection that transfers rotational forces while maintaining axial and radial alignment. Precision-ground surfaces ensure minimal clearance for vibration reduction and optimal power transmission efficiency.

Materials

Typically manufactured from case-hardened alloy steel (e.g., AISI 4140, 4340) or stainless steel (e.g., 17-4PH, 316SS) with surface treatments including nitriding, chrome plating, or black oxide coating for corrosion resistance and wear protection.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Length Range	10-200 mm
Straightness	0.01 mm/100 mm
Load Capacity	Up to 500 N·m
Surface Hardness	58-62 HRC
Diameter Tolerance	±0.005 mm

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 9409, DIN 332

Parent Products

This component is used in the following industrial products

Input/Output Couplers

Components that facilitate signal transfer between RF filters/duplexers and external circuits.

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Engineering Analysis

Risks & Mitigation

Misalignment causing premature wear
Improper installation leading to connection failure
Material fatigue under cyclic loading

FMEA Triads

Trigger: Excessive radial load
Failure: Bending or fracture of probe
Mitigation: Implement proper alignment procedures and use probes with adequate diameter and material strength

Trigger: Corrosive environment
Failure: Surface degradation and loss of dimensional accuracy
Mitigation: Use corrosion-resistant materials and protective coatings

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

ISO 286-2:2010 for dimensional tolerances

Test Method

Dimensional verification per ISO 1, hardness testing per ISO 6508, torque testing per ISO 6789

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 Coupling Probe/Pin

Manufacturer profiles associated with Coupling Probe/Pin.

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review

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Frequently Asked Questions

What is the primary function of a coupling probe/pin?

The primary function is to ensure precise alignment and secure mechanical connection between mating components in couplers, enabling efficient torque transmission while minimizing vibration and misalignment.

How do I select the right coupling probe material?

Material selection depends on application requirements: alloy steel for high torque applications, stainless steel for corrosive environments, and surface treatments for enhanced wear resistance and durability.

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.

Coupling Probe/Pin