Carriage Beam for Fork Positioner | Specifications & Verification

Product Specifications

Technical details and manufacturing context for Carriage Beam

Definition

The carriage beam is the primary horizontal structural component of a fork positioner's carriage assembly. It provides the rigid mounting platform and linear guidance for the forks, ensuring stable and precise movement during load positioning operations. As part of the fork positioner, it directly interfaces with the mast or vertical lift mechanism and supports the entire load-bearing structure of the moving forks. The beam is typically fabricated from high-strength steel or alloy steel, with material grades such as Q235B to Q345B (per GB/T 1591) selected based on load requirements. Its dimensions are customizable: beam length ranges from 1000 to 3000 mm, width from 100 to 250 mm, and height from 80 to 200 mm, allowing adaptation to various fork positioner widths and mast configurations. The rated load capacity is between 2000 and 5000 kg, and the beam weight varies from 50 to 300 kg depending on length and material. Surface treatments such as paint or zinc plating provide corrosion resistance, while surface hardness (HB 150–200) ensures wear resistance. Straightness tolerance is ±0.5 mm/m (per ISO 2768-1) and parallelism tolerance between mounting surfaces is ±0.3 mm (per ISO 2768-2), ensuring accurate alignment. The operating temperature range is -20°C to 80°C; outside this range, material properties may be affected. These specifications serve as reference ranges; actual values must be confirmed with the legal manufacturer or supplier for specific models and applications. The beam's design and tolerances are critical for safe and reliable fork positioning, and any deviation from specified parameters could compromise performance.

Working Principle

The carriage beam is fixed to the carriage assembly of the fork positioner. It translates vertically along the mast rails via chains or hydraulic cylinders. Its rigid construction prevents deflection under load, maintaining fork alignment. Linear bearings or rollers attached to the beam interface with mast channels to provide smooth, guided vertical travel for precise fork positioning. The beam's structural integrity ensures that the forks remain parallel and stable during load handling, reducing the risk of misalignment or damage.

Common Materials

High-strength steel, Alloy steel

Technical Parameters

Parameter	Typical range	Notes & selection driver
Rated Load Capacity	2000–5000 kg	Maximum load the beam can support
Beam Length	1000–3000 mm	Customizable to fit fork positioner width
Beam Width	100–250 mm	Determines mounting interface
Beam Height	80–200 mm	Affects structural rigidity
Material Grade	Q235B–Q345B	Higher grade for heavier loadsGB/T 1591
Surface Treatment	Paint or zinc plating	Corrosion resistance
Straightness Tolerance	±0.5 mm/m	Ensures smooth carriage movementISO 2768-1
Parallelism Tolerance	±0.3 mm	Between mounting surfacesISO 2768-2
Operating Temperature	-20–80 °C	Outside range may affect material properties
Surface Hardness	HB 150–200	Wear resistance
Weight	50–300 kg	Depends on length and material

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

Mounting Plates Part
Provide reinforced attachment points for connecting the beam to the carriage frame and fork mechanisms.

Material: Steel
Bearing Rails
Precision-machined surfaces or attached rails that interface with mast rollers or bearings for smooth vertical travel.

Material: Hardened steel
Reinforcement Ribs Part
Structural reinforcements welded to the beam to prevent twisting and bending under asymmetric loads.

Material: Steel

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Carriage Beam.

Applied To / Applications

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

Fork Positioner

View system integration details

Manufacturers of Carriage Beam

Manufacturer profiles associated with Carriage Beam.

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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 · Page last updated 16 September 2026

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Frequently Asked Questions

What is the function of a carriage beam in a fork positioner?

The carriage beam is the main horizontal support that holds the forks and guides their vertical movement along the mast. It ensures stable and precise positioning of loads.

What materials are commonly used for carriage beams?

Carriage beams are typically made from high-strength steel or alloy steel, with material grades such as Q235B to Q345B (per GB/T 1591) depending on load requirements.

What are the typical dimensions and load capacities?

Reference ranges include beam length 1000–3000 mm, width 100–250 mm, height 80–200 mm, and rated load capacity 2000–5000 kg. Actual values must be confirmed for specific models.

Why are tolerances important for carriage beams?

Straightness and parallelism tolerances (e.g., ±0.5 mm/m and ±0.3 mm) ensure proper alignment and smooth operation. Deviations can affect fork positioning and safety.

Data Basis

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

Preliminary Technical Classification

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pressure:	Not applicable (structural component)
other spec:	Max dynamic load: 10,000 kg, Max static load: 15,000 kg, Deflection limit: L/360
temperature:	-40°C to 150°C

Carriage Beam

Product Specifications

Industry Taxonomies & Aliases

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

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