Editorial Technical Reference

Towing Hitch

This page explains how Towing Hitch 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 mechanical coupling device used to connect an asphalt distributor to a towing vehicle for transportation.

Representative product image. Confirm appearance and specifications with the manufacturer.

Product Specifications

Technical details and manufacturing context for Towing Hitch

Definition
The towing hitch is a critical component of an asphalt distributor that enables the equipment to be towed between job sites. It serves as the primary connection point between the distributor's chassis and the towing vehicle, typically a truck or tractor. This component must withstand the weight and dynamic forces of the loaded asphalt distributor during transport while maintaining secure attachment. The hitch is designed to transfer pulling, braking, and turning forces from the towing vehicle to the distributor, ensuring stable and safe towing. It typically features a locking mechanism, such as a pin or latch, to prevent accidental disengagement. The hitch is manufactured from high-strength steel, with a material grade of S355J2+N, and is hot-dip galvanized for corrosion resistance. Key parameters include a rated towing capacity of 10–25 tonnes, a vertical load capacity of 500–1500 kg, and a hitch ball diameter of 50 mm. Overall dimensions vary: length 600–1200 mm, width 300–600 mm, height 200–400 mm, and weight 50–150 kg. Bolt hole diameters range from 14–22 mm with spacing of 80–160 mm. The operating temperature range is -40 to 85°C, and the tensile strength is 470–630 MPa. The IP rating is IP54–IP65. These values are reference ranges and must be verified for the specific model and application. The hitch complies with ISO 5692-1 for towing capacity and vertical load, ISO 1103 for ball diameter, EN 10025-2 for material, ISO 1461 for galvanizing, ISO 273 for bolt holes, and IEC 60529 for ingress protection. Always confirm model-specific values and standards with the legal manufacturer or supplier.
Working Principle
The towing hitch operates as a mechanical coupling system that connects to a compatible receiver on the towing vehicle. It typically features a locking mechanism (such as a pin or latch) that secures the connection, preventing accidental disengagement during transport. The hitch transfers pulling, braking, and turning forces from the towing vehicle to the asphalt distributor. The design must accommodate the dynamic loads encountered during towing, including acceleration, deceleration, and cornering. The hitch ball engages with a coupler on the towing vehicle, and the locking mechanism ensures a secure fit. The hitch is bolted to the distributor's chassis using specified bolt holes and spacing, and the overall dimensions must align with the vehicle frame. The material and surface treatment provide durability and corrosion resistance, while the IP rating indicates protection against dust and water jets. Proper installation and regular inspection are essential to maintain safe operation.
Common Materials
High-strength steel
Technical Parameters
ParameterTypical rangeNotes & selection driver
Rated Towing Capacity10–25 tMaximum trailer weight the hitch can safely towISO 5692-1
Vertical Load Capacity500–1500 kgMaximum downward force on the hitch ballISO 5692-1
Hitch Ball Diameter50 mmStandard ball size for heavy-duty towingISO 1103
Overall Length600–1200 mmDepends on vehicle mounting configuration
Overall Width300–600 mmMust fit within vehicle frame width
Overall Height200–400 mmAffects ground clearance and mounting
Weight50–150 kgHeavier for higher capacity models
Material GradeS355J2+NHigh-strength structural steel for durabilityEN 10025-2
Surface TreatmentHDGHot-dip galvanized for corrosion resistanceISO 1461
Operating Temperature-40–85 °CExtreme temperatures affect material properties
Tensile Strength470–630 MPaMinimum yield strength 355 MPaEN 10025-2
Bolt Hole Diameter14–22 mmMatches standard bolt sizes for mountingISO 273
Bolt Hole Spacing80–160 mmMust align with vehicle frame holes
IP RatingIP54–IP65Protection against dust and water jetsIEC 60529

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
  • Hitch Ball Part
    Spherical connection point that fits into the trailer coupler
    Material: Forged steel
  • Mounting Bracket Part
    Structural frame that attaches the hitch to the asphalt distributor chassis
    Material: Steel plate
  • Locking Pin Part
    Secures the hitch connection to prevent accidental disengagement
    Material: Hardened steel

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Towing Hitch.

Applied To / Applications

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

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Not applicable (mechanical coupling only)
other spec: Max towing capacity: 15,000 kg, Max tongue weight: 1,500 kg, Connection type: Pintle hook or ball hitch
temperature: -40°C to 120°C
Media Compatibility
✓ Asphalt distributor trailers ✓ Heavy-duty construction equipment ✓ Industrial transport vehicles
Unsuitable: Marine or corrosive saltwater environments
Sizing Data Required
  • Towing vehicle weight and power rating
  • Asphalt distributor gross vehicle weight rating (GVWR)
  • Required hitch class (e.g., Class IV, Class V)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Fatigue cracking
Cause: Cyclic loading from towing forces exceeding material endurance limit, often accelerated by stress concentrations at weld points or sharp corners
Corrosion-induced weakening
Cause: Galvanic corrosion at dissimilar metal interfaces (e.g., steel hitch/aluminum receiver) or pitting corrosion from road salt/chemical exposure compromising structural integrity
Maintenance Indicators
  • Visible cracks or deformation at weld joints or load-bearing surfaces
  • Excessive play or rattling when hitch is connected under no-load conditions
Engineering Tips
  • Implement regular torque verification of all fasteners using calibrated tools, following manufacturer specifications to prevent loosening from vibration
  • Apply corrosion-inhibiting coatings to mating surfaces and conduct annual thickness measurements at high-stress areas using ultrasonic testing

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 3853:1994 - Road vehicles - Towing vehicles - Mechanical coupling devices for towing trailers - Interchangeability ANSI/SAE J684 - Safety Chain and Coupling for Towing DIN 74058-1 - Towing devices - Ball couplings - Part 1: Dimensions and requirements

Quoted from the published standard.

Manufacturing Precision
  • Ball diameter: +/-0.05mm
  • Mounting hole alignment: +/-0.2mm
Quality Inspection
  • Magnetic Particle Inspection for weld integrity
  • Static load test to 1.5x rated capacity

Manufacturers of Towing Hitch

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

Anhui Shengxin Aluminum Co., Ltd (Shengxin Aluminium)
Xuancheng, Anhui, CN
Founded 1993240,000㎡
Listed on the company's own website · profile compiled by CNFX from public sources

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Technical documentation
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Frequently Asked Questions

What is the rated towing capacity of this hitch?

The rated towing capacity is 10–25 tonnes, as per ISO 5692-1. This is a reference range; the exact capacity depends on the specific model and must be confirmed with the manufacturer.

What materials are used in the hitch?

The hitch is made of high-strength steel, grade S355J2+N, and is hot-dip galvanized per ISO 1461 for corrosion resistance.

What standards does the hitch comply with?

The hitch references ISO 5692-1 for towing capacity and vertical load, ISO 1103 for ball diameter, EN 10025-2 for material, ISO 273 for bolt holes, and IEC 60529 for IP rating. Compliance must be verified with the manufacturer.

How should the hitch be maintained?

Regularly inspect the locking mechanism, bolts, and surface for wear or corrosion. Ensure bolts are torqued to specifications and replace any damaged parts. Follow manufacturer guidelines for maintenance intervals.

Data Basis

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

Preliminary Technical Classification
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