Pusher Rod: Load Capacity 500-5000 N, Diameter 10-50 mm

Component Specifications

Definition

A pusher rod is a precision-engineered cylindrical component designed for linear actuation within stopper pusher assemblies. It transmits force from a driving mechanism (such as pneumatic, hydraulic, or electric actuators) to a stopper or workpiece, enabling controlled pushing, positioning, or ejection operations in automated systems. The rod typically features mounting interfaces at both ends and operates within guided bushings or linear bearings to maintain alignment and minimize friction.

Working Principle

The pusher rod converts rotational or linear input force from an actuator into linear output motion. When the actuator extends, it pushes the rod forward, which transfers force to the stopper or target object. The rod moves along its axis within a guided housing, ensuring precise linear travel with minimal deflection. Retraction is achieved when the actuator reverses direction, pulling the rod back to its starting position.

Materials

Common materials include: Carbon steel (AISI 1045, 4140) for general applications; Stainless steel (AISI 304, 316) for corrosion resistance; Aluminum alloys (6061-T6) for lightweight needs; Surface treatments: Hard chrome plating, nitriding, or powder coating for wear and corrosion protection.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Length	100-1000 mm
Diameter	10-50 mm
Load Capacity	500-5000 N
Stroke Length	50-500 mm
Surface Roughness	Ra ≤ 0.8 μm
Operating Temperature	-20°C to 120°C
Straightness Tolerance	≤ 0.1 mm/m

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 286-2, DIN 2391, ISO 2768-m

Parent Products

This component is used in the following industrial products

Stopper Pusher Assembly

A mechanical assembly that pushes stoppers into position within hydraulic systems

View Product Details

Engineering Analysis

Risks & Mitigation

Wear and fatigue from cyclic loading
Misalignment causing binding or jamming
Corrosion in harsh environments
Overloading leading to bending or failure

FMEA Triads

Trigger: Insufficient lubrication
Failure: Increased friction and wear, leading to seizing or reduced stroke accuracy
Mitigation: Implement scheduled lubrication and use wear-resistant coatings

Trigger: Misalignment during installation
Failure: Binding, uneven wear, and potential rod bending
Mitigation: Use precision alignment tools during assembly and ensure proper guiding

Trigger: Excessive load beyond design limits
Failure: Permanent deformation or fracture of the rod
Mitigation: Incorporate load sensors or mechanical stops to prevent overloading

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Diameter tolerance: h7 per ISO 286-2; Straightness: ≤ 0.1 mm/m; Surface finish: Ra ≤ 0.8 μm

Test Method

Dimensional inspection with micrometers and CMM; Load testing per ISO 7500-1; Fatigue testing with cyclic loading; Corrosion resistance per ASTM B117

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 Pusher Rod

Manufacturer profiles associated with Pusher Rod.

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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 pusher rod in a stopper pusher assembly?

The pusher rod transmits force from an actuator to a stopper or workpiece, enabling controlled linear pushing, positioning, or ejection in automated machinery.

How do I select the right material for a pusher rod?

Choose based on application: carbon steel for strength and cost, stainless steel for corrosion resistance, aluminum for lightweight needs, and consider surface treatments like chrome plating for wear resistance.

What maintenance does a pusher rod require?

Regular lubrication of sliding surfaces, inspection for wear or bending, and cleaning to prevent contamination that could cause jamming or increased friction.

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.

Pusher Rod