INDUSTRY COMPONENT

Threaded End

Threaded end of a hydraulic cylinder piston rod for secure connection to external components.

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Component Specifications

Definition
The threaded end is a precisely machined terminal section of a hydraulic cylinder piston rod featuring external threads designed to create a secure mechanical connection with mating components such as cylinder heads, clevises, or other attachments. This component transmits linear force from the piston rod while maintaining alignment and preventing disconnection under operational loads.
Working Principle
The threaded end converts the linear motion of the piston rod into a secure mechanical connection through threaded engagement. When torque is applied to the nut or mating component, the threads create axial clamping force that prevents separation while allowing precise adjustment of the connection length. The thread geometry distributes stress evenly along the engaged length to withstand tensile, compressive, and shear forces during hydraulic cylinder operation.
Materials
Typically manufactured from high-strength alloy steels such as AISI 4140, 4340, or 1045 carbon steel with hardness ranging from 28-32 HRC. Surface treatments include chrome plating (20-40μm thickness) for corrosion resistance and reduced friction, or nitriding for enhanced wear resistance in high-cycle applications.
Technical Parameters
  • Thread Size M20 to M100 or equivalent
  • Thread Type Metric (M), Unified (UNC/UNF), or Acme threads
  • Thread Class 6g for metric, 2A/2B for unified
  • Thread Length 1.5D to 2.5D (where D is thread diameter)
  • Surface Finish Ra 0.8-1.6 μm
  • Runout Tolerance 0.05-0.1 mm per 100 mm
  • Tensile Strength 800-1200 MPa
Standards
ISO 965, DIN 13, ISO 11926, DIN 976

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Threaded End.

hydraulic cylinder threaded end piston rod thread mechanical connection threaded rod end hydraulic component industrial fastening Threaded End Threaded End in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Hydraulic Cylinder Piston Rod

Precision-machined rod that transmits force in hydraulic cylinders.

View Product Details

Forged Steel Piston Rod

Precision-forged steel rod for hydraulic/pneumatic cylinder applications.

View Product Details

Precision Hydraulic Cylinder Piston Rod

High-precision cylindrical rod that transmits force in hydraulic systems.

View Product Details

Engineering Analysis

Risks & Mitigation
  • Thread stripping under excessive load
  • Fatigue failure from cyclic stress
  • Corrosion in wet environments
  • Cross-threading during assembly
  • Insufficient thread engagement
FMEA Triads
Trigger: Insufficient thread engagement length
Failure: Thread stripping under tensile load
Mitigation: Design engagement length ≥1.5× thread diameter; implement torque-controlled assembly procedures
Trigger: Corrosive environment without proper protection
Failure: Thread corrosion leading to seizure or strength reduction
Mitigation: Apply chrome plating or corrosion-resistant coatings; specify stainless steel for severe environments
Trigger: Misalignment during assembly
Failure: Cross-threading and damaged threads
Mitigation: Use alignment guides during assembly; implement visual inspection procedures

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
Thread pitch tolerance: ±0.025mm; Major diameter tolerance: ISO 6g/6H; Straightness: 0.1mm per 300mm
Test Method
Dimensional verification via thread gauges (GO/NO-GO); Torque testing to 150% of rated load; Salt spray testing per ASTM B117 for corrosion resistance; Dye penetrant inspection for surface defects

Buyer Feedback

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

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"Found 29+ suppliers for Threaded End on CNFX, but this spec remains the most cost-effective."

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Frequently Asked Questions

What are the common failure modes of threaded ends in hydraulic cylinders?

Common failures include thread stripping due to over-torque, fatigue cracking at the thread root from cyclic loading, corrosion pitting in harsh environments, and galling from improper lubrication during assembly.

How do I select the proper thread type for a hydraulic cylinder application?

Select based on load requirements: metric threads for standard applications, unified threads for North American equipment, and Acme threads for applications requiring frequent adjustment. Consider thread engagement length (minimum 1.5× diameter), material strength, and corrosion protection requirements.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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