Structural backing: Surface Finish Ra 0.8-1.6 μm

Component Specifications

Definition

A structural backing is a critical component in barrel liner assemblies that provides mechanical reinforcement, load distribution, and dimensional stability. It serves as the foundational support structure that maintains the barrel liner's position and alignment under operational stresses, preventing deformation and ensuring consistent performance in material processing applications.

Working Principle

The structural backing operates on mechanical support principles, transferring operational loads from the barrel liner to the machine frame through rigid structural elements. It maintains geometric integrity by resisting bending moments, torsional forces, and vibration-induced stresses, ensuring the barrel liner maintains proper alignment and contact with processing materials.

Materials

Typically manufactured from high-strength steel alloys (AISI 4140, 4340), stainless steel (316L, 17-4PH), or specialized composites with minimum yield strength of 550 MPa and hardness of 30-45 HRC. Surface treatments include nitriding, hard chrome plating, or ceramic coatings for wear resistance.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Weight	Varies by size (typically 5-50 kg)
Load Capacity	15-50 kN depending on application
Surface Finish	Ra 0.8-1.6 μm
Dimensional Tolerance	±0.05 mm
Operating Temperature	-20°C to 250°C

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 7154, ISO 2768-1

Parent Products

This component is used in the following industrial products

Barrel Liners

Replaceable cylindrical sleeves that form the inner surface of extrusion or injection molding barrels.

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Engineering Analysis

Risks & Mitigation

Fatigue failure under cyclic loading
Corrosion in harsh environments
Dimensional instability due to thermal expansion
Improper installation leading to misalignment

FMEA Triads

Trigger: Material fatigue from cyclic loading
Failure: Crack propagation leading to structural failure
Mitigation: Implement regular non-destructive testing (NDT) and use materials with higher fatigue resistance

Trigger: Corrosive environment exposure
Failure: Reduced cross-sectional area and strength degradation
Mitigation: Apply protective coatings and use corrosion-resistant alloys

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Geometric tolerances per ISO 1101, dimensional tolerances per ISO 286-2

Test Method

Dimensional verification with CMM, load testing per ASTM E8, non-destructive testing (UT, MPI) per ASME BPVC

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 Structural backing

Manufacturer profiles associated with Structural backing.

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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.

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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.

Frequently Asked Questions

What is the primary function of a structural backing in barrel liner systems?

The primary function is to provide mechanical support and stability to the barrel liner, distributing operational loads and preventing deformation during material processing operations.

How often should structural backing components be inspected?

Regular visual inspections should occur monthly, with detailed dimensional and structural inspections recommended every 6-12 months depending on operating conditions and load cycles.

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.

Structural backing