Screening Bars/Plates: Aperture Size 1-100 mm, Open Area 30-70%

Component Specifications

Definition

Screening bars/plates are precision-engineered components installed on vibrating decks to perform particle size separation. They consist of parallel bars or perforated plates arranged to create specific aperture sizes, allowing smaller particles to pass through while larger particles are retained and conveyed forward. These components are critical for achieving accurate grading in industrial screening processes, with designs optimized for material flow, wear resistance, and vibration transmission efficiency.

Working Principle

Screening bars/plates operate on the principle of size-based separation through mechanical vibration. When installed on a vibrating deck, they receive controlled oscillatory motion that causes material to stratify and move across their surface. Smaller particles fall through the apertures between bars or through plate perforations due to gravity and vibration-induced agitation, while larger particles remain on top and are transported to the discharge end. The vibration frequency, amplitude, and deck angle optimize material flow and separation efficiency.

Materials

High-carbon steel (AISI 1075/1080), manganese steel (11-14% Mn), stainless steel (304/316), polyurethane, rubber-coated steel. Material selection depends on application: steel for heavy-duty abrasive materials, polyurethane for corrosion resistance and noise reduction, rubber for impact absorption.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Width	100-1500 mm
Length	500-3000 mm
Open Area	30-70%
Aperture Size	1-100 mm
Bar Thickness	5-25 mm
Plate Thickness	3-20 mm
Surface Hardness	45-65 HRC (steel), 80-95 Shore A (polyurethane)

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 9044:2016, DIN 22101

Parent Products

This component is used in the following industrial products

Vibrating Deck

The primary screening surface of a vibrating grizzly feeder that separates materials by size.

View Product Details

Engineering Analysis

Risks & Mitigation

Premature wear from abrasive materials
Fatigue failure from vibration stress
Aperture blockage from moist/sticky materials
Improper installation causing misalignment
Material contamination from component degradation

FMEA Triads

Trigger: Excessive abrasive wear
Failure: Enlarged apertures causing oversize contamination
Mitigation: Use hardened steel or polyurethane materials; implement regular wear monitoring; apply wear-resistant coatings

Trigger: Vibration-induced fatigue
Failure: Cracking or breakage of bars/plates
Mitigation: Design with proper stress distribution; use fatigue-resistant materials; ensure correct tensioning and mounting

Trigger: Material buildup in apertures
Failure: Reduced screening efficiency and capacity
Mitigation: Install cleaning systems (ball decks, brushes); use anti-blinding screen surfaces; optimize vibration parameters

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Aperture size tolerance ±5% for standard applications, ±2% for precision screening. Flatness tolerance 1mm per meter. Dimensional tolerance ±1mm on length/width.

Test Method

ISO 9044:2016 for industrial wire cloth and screen media testing; ASTM E11 for wire cloth specifications; visual inspection for defects; hardness testing per ASTM E18; dimensional verification with calibrated instruments

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 Screening Bars/Plates

Manufacturer profiles associated with Screening Bars/Plates.

Sourcing Screening Bars/Plates from China?

Tell us your specification and target quantity — we will match it against manufacturer records and come back with the factories that fit.

Request manufacturers We manufacture this

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

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

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 is the difference between screening bars and screening plates?

Screening bars are individual parallel rods creating linear apertures, ideal for heavy-duty applications with high impact. Screening plates are solid sheets with punched or woven apertures, providing more uniform openings and better fine particle separation.

How often should screening bars/plates be replaced?

Replacement intervals depend on material abrasiveness and operating hours. Typically 3-12 months for steel components in abrasive applications, 6-24 months for polyurethane. Regular inspection for wear, deformation, or aperture enlargement is recommended.

Can screening bars be customized for specific materials?

Yes, customization includes aperture size and shape, material thickness, surface treatments (hardfacing, coatings), and mounting configurations to optimize for specific material characteristics like moisture content, abrasiveness, or particle shape.

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.

Screening Bars/Plates