Editorial Technical Reference

Tailgate

This page explains how Tailgate is classified within Motor Vehicle Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

A hinged or removable panel at the rear of a dump truck body that controls material discharge.

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Product Specifications

Technical details and manufacturing context for Tailgate

Definition
The tailgate is a critical component of a dump truck's cargo body, located at the rear end. It serves as a movable barrier that contains materials during transport and controls the flow, direction, and rate of discharge when the truck bed is tilted. Tailgates can be designed to swing open, slide, or be completely removed, with variations including standard flat gates, high-lift gates for increased capacity, and specialized gates for specific materials like aggregates or demolition debris. Constructed from high-strength steel and abrasion-resistant steel plate, the tailgate is engineered to withstand heavy loads and abrasive wear. Key parameters include a rated load capacity of 10–30 tonnes, an opening height adjustable from 500 to 1500 mm Sealing efficiency is at least 98% to prevent material leakage during transport, and the operating temperature range is -40 to 85°C. The material grade is Q235B (GB/T 700), with surface treatment of epoxy primer and polyurethane topcoat (ISO 12944). The tailgate weighs between 150 and 400 kg, with a hinge pin diameter of 25–40 mm and a cylinder bore size of 63–100 mm. These values are reference ranges; actual specifications must be confirmed with the legal manufacturer for the specific model and application. The tailgate operates via hydraulic or manual mechanisms that release the locking system, allowing the gate to open as the truck bed elevates. The opening angle or position controls material exit—fully open for rapid discharge, partially open for controlled spreading, or with extensions to direct flow. Proper maintenance includes regular inspection of hinges, seals, and hydraulic components. Failure signs include material leakage, uneven discharge, or unusual noises during operation. Always verify model-specific values and standards with the supplier.
Working Principle
The tailgate operates by being either hinged at the top or sides to swing open, or designed to slide vertically or horizontally. During dumping, hydraulic or manual mechanisms release the locking system, allowing the gate to open as the truck bed elevates. The opening angle or position controls how material exits—fully open for rapid discharge, partially open for controlled spreading, or with extensions/attachments to direct the flow. The sealing system prevents leakage during transport, and the hinge and cylinder components determine opening force and speed.
Common Materials
High-strength steel, Abrasion-resistant steel plate
Technical Parameters
ParameterTypical rangeNotes & selection driver
Rated Load Capacity10–30 tMaximum material weight the tailgate can hold
Opening Height500–1500 mmAdjustable for material discharge control
Sealing Efficiency≥98 %Prevents material leakage during transport
Operating Temperature-40–85 °CExtreme temperatures may affect seal integrity
Material GradeQ235BStructural steel with good weldabilityGB/T 700
Surface TreatmentEpoxy primer + polyurethane topcoatCorrosion protection for outdoor useISO 12944
Weight150–400 kgAffects vehicle payload and fuel efficiency
Hinge Pin Diameter25–40 mmDetermines hinge strength and durability
Cylinder Bore Size63–100 mmAffects opening force and speed

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
  • Gate Panel Part
    Main structural surface that contains and directs material.
    Material: Abrasion-resistant steel
  • Hinge Assembly
    Allows the tailgate to pivot open and closed.
    Material: Forged steel
  • Locking Mechanism
    Secures the tailgate in the closed position during transport.
    Material: Hardened steel
  • Reinforcement Ribs Part
    Structural supports to prevent deformation under load.
    Material: Steel
  • Seal/Gasket Part
    Prevents material leakage between the tailgate and dump body.
    Material: Rubber or polyurethane

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Tailgate.

End gate Rear gate Dump gate

Applied To / Applications

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

Dump Truck
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Dump Body
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Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: 0-50 psi (static load from material)
other spec: Max particle size: 300mm, Slurry concentration: up to 70% solids by weight
temperature: -40°C to 120°C
Media Compatibility
✓ Aggregates (gravel, sand) ✓ Construction debris ✓ Agricultural bulk materials (grain, feed)
Unsuitable: Corrosive chemical slurries or molten materials
Sizing Data Required
  • Dump truck body dimensions (width/height)
  • Material density and flow characteristics
  • Required discharge angle/clearance

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Hinge Pin Wear and Failure
Cause: Repeated cyclic loading from opening/closing, combined with inadequate lubrication and exposure to contaminants (dirt, moisture, road salt), leading to accelerated wear, corrosion, and eventual pin seizure or fracture.
Latch Mechanism Malfunction
Cause: Misalignment due to vehicle frame stress or impact damage, accumulation of debris in the latch assembly, or wear/fatigue of internal springs and locking components, preventing secure closure or release.
Maintenance Indicators
  • Unusual grinding, popping, or squeaking noises during operation, indicating hinge wear, latch issues, or structural binding.
  • Visible misalignment, sagging, or difficulty latching securely, suggesting hinge wear, structural fatigue, or latch mechanism problems.
Engineering Tips
  • Implement a scheduled lubrication regimen using a high-quality, corrosion-resistant grease on all hinge pins, pivot points, and latch components, especially after exposure to moisture or road contaminants.
  • Regularly inspect and adjust hinge alignment and latch striker plates to ensure proper engagement, and promptly address any minor impacts or frame distortions that could lead to misalignment and accelerated wear.

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
ISO 14122-3:2016 (Safety of machinery - Permanent means of access to machinery - Part 3: Stairs, stepladders and guard-rails) ANSI/ASSE A1264.1-2017 (Safety Requirements for Workplace Walking/Working Surfaces and Their Access; Workplace, Floor, Wall and Roof Openings; Stairs and Guardrail Systems) DIN 18008-4:2013 (Glass in building - Design and construction rules - Part 4: Additional requirements for barrier glazing)

Quoted from the published standard.

Manufacturing Precision
  • Flatness: +/- 1.5 mm per meter length
  • Hole alignment: +/- 0.5 mm for mounting points
Quality Inspection
  • Load Testing (static and dynamic load verification)
  • Dimensional Verification (using CMM or laser scanning)

Manufacturers of Tailgate

Manufacturer profiles associated with Tailgate.

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Frequently Asked Questions

What materials are dump truck tailgates typically made of?

According to the directory, tailgates are commonly made from high-strength steel and abrasion-resistant steel plate. The material grade listed is Q235B (GB/T 700), which is structural steel with good weldability. The surface treatment is epoxy primer and polyurethane topcoat (ISO 12944) for corrosion protection.

How does the tailgate control material discharge?

The tailgate opens via hydraulic or manual mechanisms when the truck bed is tilted. The opening angle or position determines the discharge rate: fully open for rapid discharge, partially open for controlled spreading, or with extensions to direct the flow. The sealing system prevents leakage during transport.

What are the key parameters to consider when selecting a tailgate?

Key parameters include rated load capacity (10–30 t), opening height (500–1500 mm), operating pressure (1.0–1.6 MPa), sealing efficiency (≥98%), operating temperature (-40 to 85°C), weight (150–400 kg), hinge pin diameter (25–40 mm), and cylinder bore size (63–100 mm). These are reference ranges; confirm with the manufacturer for your specific model.

What maintenance signals indicate a tailgate needs attention?

Signs of wear include material leakage during transport, uneven discharge, unusual noises from hinges or cylinders, or visible damage to seals. Regular inspection of hinges, seals, and hydraulic components is recommended. Extreme temperatures may affect seal integrity, so check seals in harsh conditions.
Data basis: editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Data Basis

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

Preliminary Technical Classification
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