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
ParameterTypical rangeNotes & selection driver
Thread SizeM20 to M100 or equivalent
Thread TypeMetric (M), Unified (UNC/UNF), or Acme threads
Thread Class6g for metric, 2A/2B for unified
Thread Length1.5D to 2.5D (where D is thread diameter)
Surface FinishRa 0.8-1.6 μm
Runout Tolerance0.05-0.1 mm per 100 mm
Tensile Strength800-1200 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 965, DIN 13, ISO 11926, DIN 976

Parent Products

This component is used in the following industrial products

Hydraulic Cylinder Piston Rod

A hydraulic cylinder piston rod is a precision-machined, load-bearing component that converts hydraulic pressure into linear mechanical force.

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Forged Steel Piston Rod

A forged steel piston rod is a critical component in hydraulic and pneumatic cylinders, transmitting linear force from the piston to the external load while maintaining alignment and resisting bending moments.

View Product Details

Precision Hydraulic Cylinder Piston Rod

A precision-machined cylindrical component that serves as the force-transmitting element in hydraulic cylinders.

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

Typical Suppliers & Equivalents

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

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

1 company lists this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

SAFVAL
Shandong, CN
Also makes: Butterfly Valve, Gate Valve, Check Valve and 7 more
Listed on the company's own website · profile compiled by CNFX from public sources
View profile Send enquiry

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

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.
Upper Tool (Punch)
Upper Tool (Punch) is the active forming component in metal plate bending machines that applies precise downward force to create bends in sheet metal.
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 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.

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.

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