Actuator Rod/Piston: Load Capacity 500-50000 N

Component Specifications

Definition

The actuator rod/piston is a critical linear motion component within insertion actuators, designed to translate hydraulic or pneumatic energy into controlled mechanical force. It consists of a cylindrical rod that moves linearly within a cylinder bore, sealed with appropriate rings to prevent fluid leakage. This component provides the precise force and stroke required for insertion operations in automated assembly systems, ensuring accurate positioning and repeatable performance.

Working Principle

Operates on the principle of fluid dynamics (hydraulic or pneumatic). Pressure differential across the piston creates linear force according to Pascal's law (F=P×A). The rod transmits this force to the external load while maintaining alignment through precision bearings or bushings.

Materials

Typically manufactured from hardened alloy steel (AISI 4140/4340) or stainless steel (17-4PH) with surface treatments: chrome plating (15-30μm) for wear resistance, nitriding for hardness (50-65 HRC). Sealing surfaces polished to Ra 0.2-0.4μm.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Diameter	10-100 mm
Hardness	50-65 HRC
Load Capacity	500-50000 N
Stroke Length	50-1000 mm
Surface Finish	Ra 0.2-0.4 μm
Operating Pressure	Up to 300 bar (hydraulic), 10 bar (pneumatic)
Straightness Tolerance	0.01 mm/100 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 6431, ISO 15552, DIN ISO 21287, DIN 24554

Parent Products

This component is used in the following industrial products

Insertion Actuator

A precision mechanical component that provides controlled linear motion to insert vibration motors into assemblies.

View Product Details

Force Actuator

A mechanical component within a welding head that applies and controls the force required for proper weld formation.

View Product Details

Engineering Analysis

Risks & Mitigation

Rod bending under off-center loads
Surface corrosion in humid environments
Seal wear leading to fluid leakage
Fatigue failure at thread roots

FMEA Triads

Trigger: Misalignment during installation
Failure: Premature seal wear and fluid leakage
Mitigation: Use alignment fixtures during assembly, verify parallelism within 0.05mm/100mm

Trigger: Inadequate surface hardness
Failure: Scoring and galling of rod surface
Mitigation: Specify minimum hardness of 50 HRC with appropriate surface treatments

Trigger: Corrosive environment exposure
Failure: Pitting and reduced fatigue life
Mitigation: Use stainless steel or apply corrosion-resistant coatings

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Diameter: h8/h9, Straightness: 0.01mm/100mm, Surface finish: Ra 0.2-0.4μm

Test Method

Dimensional verification per ISO 1101, Hardness testing per ISO 6508, Pressure testing per ISO 19973

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 Actuator Rod/Piston

Manufacturer profiles associated with Actuator Rod/Piston.

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Related Components

Mounting Interface

Precision mounting interface connecting punch tips to pharmaceutical tablet press machines for accurate tablet production.

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.

Frequently Asked Questions

What is the difference between actuator rods for hydraulic vs pneumatic systems?

Hydraulic rods are designed for higher pressures (up to 300 bar) with thicker cross-sections and specialized sealing, while pneumatic rods operate at lower pressures (typically 6-10 bar) with lighter construction and different seal materials.

How often should actuator rods be inspected for wear?

Visual inspection every 500 operating hours, dimensional measurement every 2000 hours or 6 months. Replace if wear exceeds 0.1mm diameter reduction or shows scoring deeper than 0.05mm.

Can actuator rods from different manufacturers be interchanged?

Only when dimensional specifications (ISO 6431/15552), mounting interfaces, and material properties match exactly. Always verify compatibility with cylinder bore and seal specifications.

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.

Actuator Rod/Piston