Editorial Technical Reference

Chassis

This page explains how Chassis is classified within Other Transport Equipment Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

The chassis is the foundational structural component of a Reach Stacker, providing the rigid framework that supports the engine, transmission, cab, lifting mechanism, and counterweights.

Product Specifications

Technical details and manufacturing context for Chassis

Definition
The chassis is the foundational structural component of a Reach Stacker, providing the rigid framework that supports the engine, transmission, cab, lifting mechanism, and counterweights. It is engineered to withstand the immense static and dynamic loads encountered during container handling operations, including lifting, stacking, and transport across uneven terminal surfaces. Its design directly influences the machine's stability, durability, and overall performance.

Constructed from high-strength low-alloy steel (typically Q345B with a yield strength of 345 MPa per GB/T 1591), the chassis is built to endure torsional stresses from uneven terrain and bending moments from lifting loads. It transfers the weight of the entire machine and its cargo to the wheels and axles, ensuring structural integrity and alignment of all mounted components.

Key parameters for the chassis include a rated lifting capacity of 45–52 tonnes (at standard load center, derated at extended outreach, per ISO 3691-1), a maximum lifting height of 15–18 meters, and a maximum travel speed of 25–35 km/h (loaded). The turning radius ranges from 6.5–8.5 meters, and overall width and length are 3.0–4.5 meters and 8.5–11.5 meters respectively. The chassis weight is typically 12–18 tonnes (dry, without engine and attachments). Engine power ranges from 180–250 kW (net, per ISO 1585), and the hydraulic system operates at 20–25 MPa. The operating temperature range for full performance is -20°C to 50°C.

These values are directory reference ranges and must be verified for the specific model and application with the legal manufacturer or supplier. Standards listed are procurement references, not certifications. Always confirm model-specific values and standards before purchase or use.
Working Principle
The chassis functions as the primary load-bearing structure. It transfers the weight of the entire machine and its cargo (containers) to the wheels/axles and ultimately to the ground. It also absorbs and distributes operational stresses, such as torsion from uneven terrain and bending moments from lifting loads, ensuring the integrity and alignment of all mounted components. The chassis must maintain rigidity to prevent misalignment of the lifting mechanism and drivetrain, which could lead to premature wear or failure. Its design must accommodate the dynamic forces generated during container handling, including sudden stops, acceleration, and lifting operations. The material and construction must resist fatigue and corrosion over the machine's service life.
Common Materials
High-strength steel
Technical Parameters
ParameterTypical rangeNotes & selection driver
Rated Lifting Capacity45–52 tCapacity at standard load center; derate at extended outreach.ISO 3691-1
Max Lifting Height15–18 mHeight to top of lift cylinder; affects stacking capability.
Max Travel Speed25–35 km/hLoaded speed; empty speed may be higher.
Turning Radius6.5–8.5 mMeasured to outside of tire; critical for yard maneuverability.
Engine Power180–250 kWNet power at rated RPM; varies with emission tier.ISO 1585
Operating Pressure20–25 MPaHydraulic system pressure; below 20 MPa reduces lifting force.
Operating Temperature-20–50 °CAmbient range for full performance; outside may require special fluids.
Chassis MaterialQ345BHigh-strength low-alloy steel; yield strength 345 MPa.GB/T 1591
Overall Width3.0–4.5 mDetermines container lane compatibility.
Overall Length8.5–11.5 mIncluding forks; affects turning and parking space.
Chassis Weight12–18 tDry weight without engine and attachments.

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
  • Main Rails / Side Members Part
    Longitudinal structural beams that form the primary spine of the chassis, carrying most of the bending loads.
    Material: High-strength steel
  • Cross Members Part
    Transverse beams connecting the main rails, providing torsional rigidity and supporting mounted components.
    Material: Steel
  • Mounting Brackets/Plates Part
    Reinforced attachment points for securing major assemblies like the engine, transmission, and cab.
    Material: Steel

Application & selection

Application Fit & Sizing Matrix

Operational Limits
pressure: N/A (structural component, not pressure vessel)
temperature: -20°C to +50°C (operational ambient range)
fatigue life: Minimum 1,000,000 cycles at rated load
load capacity: Up to 100 tons (typical for reach stacker applications)
Media Compatibility
✓ Container handling operations ✓ Port logistics environments ✓ Heavy-duty industrial yards
Unsuitable: Marine submersion or constant saltwater spray without specialized corrosion protection
Sizing Data Required
  • Maximum lifting capacity (tons)
  • Wheelbase and overall dimensions (meters)
  • Required ground clearance and turning radius (meters)

Risk, maintenance & compliance

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Corrosion fatigue cracking
Cause: Cyclic loading combined with environmental exposure (salt, moisture, chemicals) leading to crack initiation and propagation at stress concentrations like welds or bolt holes.
Structural deformation or buckling
Cause: Overloading beyond design limits, impact damage, or material fatigue from repeated stress cycles causing permanent distortion or collapse of frame members.
Maintenance Indicators
  • Visible cracks, especially at welded joints or high-stress areas, indicating structural failure progression
  • Abnormal creaking, groaning, or popping noises during operation, suggesting loose fasteners or compromised structural integrity
Engineering Tips
  • Implement regular non-destructive testing (e.g., magnetic particle or ultrasonic inspection) at critical stress points to detect early-stage cracks before catastrophic failure
  • Apply protective coatings (e.g., galvanization, epoxy primers) and establish wash-down protocols to prevent corrosion, especially in harsh environments

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
ANSI/ASME Y14.5 - Dimensioning and Tolerancing DIN 4000-1 - Tabular Layouts of Article Characteristics

Quoted from the published standard.

Manufacturing Precision
  • Flatness: 0.1mm per 100mm
  • Hole Position: +/-0.05mm
Quality Inspection
  • Dimensional Verification with CMM
  • Surface Roughness Test
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.

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Manufacturers of Chassis

2 companies list this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

UDWEN
Jiangsu, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “MAIN FRAME”
View source page ↗ udwenconsole.com · recorded 2026-08-22
MAXTON
Zhengzhou, Henan, CN
Also makes: Crushing Plant, Bucket Elevator, Screw Conveyor and 9 more
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Main frame”
View source page ↗ maxtonco.com · recorded 2026-09-05

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Frequently Asked Questions

What is the primary function of the chassis in a Reach Stacker?

The chassis is the main load-bearing structure that supports all major components and transfers the machine's weight and cargo to the ground via the wheels and axles. It also absorbs and distributes operational stresses to maintain structural integrity.

What material is typically used for the chassis?

The chassis is typically made of high-strength low-alloy steel, such as Q345B with a yield strength of 345 MPa, as referenced in GB/T 1591. This material provides the necessary strength and durability for heavy-duty operations.

What are the key dimensional parameters of the chassis?

Key dimensions include overall width (3.0–4.5 m), overall length (8.5–11.5 m), and chassis weight (12–18 t). These values are reference ranges and must be confirmed for the specific model.

How does the chassis affect the machine's stability?

The chassis design directly influences stability by providing a rigid base that maintains proper alignment of components and distributes loads evenly. A well-designed chassis helps prevent tipping and ensures safe operation during lifting and travel.

Related equipment

Applied To / Applications

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

Industrial Ecosystem & Supply Chain Structure

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Chassis.

Data Basis

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

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.

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