Stick Connection Pins: Length Range 50-300 mm

Component Specifications

Definition

Stick connection pins are cylindrical mechanical fasteners designed for connecting structural elements in boom assemblies. They function as removable or permanent joints that transmit shear and tensile loads between connected parts while maintaining precise alignment. These pins typically feature tight dimensional tolerances, surface finishes, and material properties to withstand dynamic loading conditions common in material handling, construction, and industrial machinery applications.

Working Principle

Stick connection pins operate on the principle of interference or clearance fits within mating holes of connected components. They transfer mechanical loads through shear forces along their cylindrical surface, maintaining alignment through precise diameter-to-hole relationships. Some designs incorporate locking mechanisms (cotter pins, retaining rings, or threaded ends) to prevent accidental disengagement during operation.

Materials

Typically manufactured from alloy steels (AISI 4140, 4340), stainless steels (304, 316), or high-strength aluminum alloys. Heat treatment processes (quenching and tempering) achieve hardness levels of 28-32 HRC for steel pins. Surface treatments include zinc plating, black oxide coating, or hard chrome plating for corrosion resistance and wear protection.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Length Range	50-300 mm
Diameter Range	10-50 mm
Shear Strength	400-800 MPa
Surface Finish	Ra 1.6-3.2 μm
Tolerance Grade	h7/g6
Tensile Strength	600-1000 MPa

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 8734, DIN 6325, ISO 2338, DIN 7

Parent Products

This component is used in the following industrial products

Boom

The main structural arm of a hydraulic excavator that connects the cab to the stick and bucket assembly.

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Engineering Analysis

Risks & Mitigation

Shear failure under overload
Corrosion in harsh environments
Wear leading to loose connections
Improper installation causing misalignment

FMEA Triads

Trigger: Excessive dynamic loading beyond design limits
Failure: Shear fracture of pin
Mitigation: Implement load monitoring systems, use pins with higher shear strength ratings, regular inspection for deformation

Trigger: Corrosive environment without proper protection
Failure: Reduced cross-sectional area leading to failure
Mitigation: Apply appropriate surface coatings, use corrosion-resistant materials, implement regular maintenance schedules

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

ISO 2768-mK for general dimensions, h7/g6 fit for critical diameters

Test Method

Shear testing per ASTM F606, hardness testing per ASTM E18, dimensional inspection per ISO 2768

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

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Inspection readiness

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

Supplier transparency

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Manufacturers of Stick Connection Pins

Manufacturer profiles associated with Stick Connection Pins.

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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

Related Components

Chrome Plating

Hard chrome plating is an electroplating process that deposits a layer of chromium onto metal surfaces to enhance wear resistance, corrosion protection, and reduce friction for hydraulic cylinder piston rods.

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Main Frame

The main frame is the primary structural component of a hydraulic press, providing rigidity and stability to withstand high compressive forces during metal forming operations.

Shaft Bearing

Precision component supporting rotating shafts in vibration motors to reduce friction and maintain alignment.

Frequently Asked Questions

What is the difference between stick connection pins and regular bolts?

Stick connection pins are primarily designed for shear load transfer and alignment, while bolts are designed for clamping forces through tension. Pins typically have tighter tolerances and don't require threaded connections in their primary function.

How do I select the right stick connection pin for my boom application?

Consider load requirements (shear vs tensile), environmental conditions (corrosion resistance needed), required precision (tolerance grade), and whether the connection needs to be permanent or removable. Always consult engineering specifications and applicable standards.

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.

Stick Connection Pins