Screed Beam for Concrete Screed Machines | Specifications & Verification

Product Specifications

Technical details and manufacturing context for Screed Beam

Definition

A screed beam is the critical horizontal structural element of a concrete screed machine that directly contacts and processes the concrete surface. It spans the width of the screed and is responsible for the final leveling, smoothing, and initial compaction of the concrete slab to achieve the specified grade, flatness, and surface finish. The beam is typically made of high-strength steel or aluminum alloy, with a working width and beam length ranging from 2000 to 6000 mm, a beam height of 150 to 300 mm, and a weight of 80 to 300 kg. It is equipped with a vibration system that operates at a frequency of 50 to 100 Hz and an amplitude of 0.5 to 2.0 mm, powered by motors of 2.2 to 5.5 kW each, and requires a three-phase power supply of 220 to 440 V AC at 50/60 Hz. The leveling accuracy is ±3 mm per 3 m straightedge. The operating temperature range is -10 to 50 °C, and the ingress protection rating is IP54 to IP65 per IEC 60529. Material grades for steel are Q235B to Q345B per GB/T 700 and GB/T 1591. Custom widths are available on request. The beam is dragged or vibrated across the wet concrete surface, cutting off excess concrete to the desired height while consolidating the material and eliminating voids. It is essential to verify model-specific values and standards with the legal manufacturer or supplier before procurement.

Working Principle

The screed beam is dragged or vibrated across the wet concrete surface. Its straight, rigid edge cuts off excess concrete to the desired height, while its mass and/or vibration help consolidate the material, eliminate voids, and bring fine particles to the surface for a smooth finish. The vibration frequency and amplitude are adjustable to suit concrete consistency, with higher settings for stiff mixes. The beam's rigidity and weight affect its performance, and the leveling accuracy is maintained within ±3 mm per 3 m straightedge. The beam is powered by vibrator units, each with a motor power of 2.2 to 5.5 kW, and operates within a temperature range of -10 to 50 °C. The ingress protection rating ensures suitability for dusty or wet sites. Proper operation requires matching the beam length to the working width and adjusting vibration settings based on the concrete mix.

Common Materials

High-strength steel, Aluminum alloy

Technical Parameters

Parameter	Typical range	Notes & selection driver
Working Width	2000–6000 mm	Custom widths available on request
Beam Length	2000–6000 mm	Matches working width
Beam Height	150–300 mm	Affects rigidity and weight
Beam Weight	80–300 kg	Depends on length and profile
Vibration Frequency	50–100 Hz	Adjustable for concrete consistency
Vibration Amplitude	0.5–2.0 mm	Higher for stiff mixes
Leveling Accuracy	±3 mm/m	Per 3 m straightedge
Motor Power	2.2–5.5 kW	Per vibrator unit
Power Supply	220–440 V AC	Three-phase, 50/60 Hz
Operating Temperature	-10–50 °C	Below 0°C concrete may freeze
Ingress Protection	IP54–IP65	Higher for dusty/wet sitesIEC 60529
Material Grade	Q235B–Q345B	Higher strength for longer spansGB/T 700, GB/T 1591

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Wear Plate Part
Replaceable bottom edge that contacts concrete, providing durability and a consistent finish.

Material: Hardened steel
Vibration Mechanism Housing Part
Encases and mounts the internal vibrator(s) that transfer energy to the beam for concrete consolidation.

Material: Steel
End Cap/Connector Part
Secures the beam ends and provides attachment points for extension sections or pulling equipment.

Material: Cast steel
Vibrator Units
Shake the beam so the mix consolidates as it is struck off.

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Screed Beam.

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Concrete Screed

View system integration details

Vibrating Screed

View system integration details

Manufacturers of Screed Beam

Manufacturer profiles associated with Screed Beam.

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Frequently Asked Questions

What is the function of a screed beam?

The screed beam is the horizontal structural element of a concrete screed machine that directly contacts the concrete surface. It levels, smooths, and initially compacts freshly poured concrete to achieve the specified grade, flatness, and surface finish.

What materials are used for screed beams?

Screed beams are typically made of high-strength steel or aluminum alloy. The material grade for steel can range from Q235B to Q345B per GB/T 700 and GB/T 1591, depending on the required rigidity and span.

How does the vibration system work?

The vibration system operates at a frequency of 50 to 100 Hz and an amplitude of 0.5 to 2.0 mm. It is adjustable to suit concrete consistency, with higher settings for stiff mixes. The vibration helps consolidate the concrete and eliminate voids.

What are the key parameters to verify before purchasing?

Key parameters include working width, beam length, beam height, beam weight, vibration frequency and amplitude, leveling accuracy, motor power, power supply, operating temperature, ingress protection, and material grade. Always verify model-specific values with the legal manufacturer or supplier.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	N/A (structural component, not pressure-bearing)
other spec:	Concrete slump range: 50-150mm, Max vibration frequency: 300 Hz, Beam deflection tolerance: ≤L/500
temperature:	0°C to 50°C (operational ambient)

Screed Beam

Product Specifications

Industry Taxonomies & Aliases

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards