Industry-Verified Manufacturing Data (2026)

Rear Frame

Based on aggregated insights from multiple verified factory profiles within the CNFX directory, the standard Rear Frame used in the Motor Vehicle Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Rear Frame is characterized by the integration of Main Rails and Cross Members. In industrial production environments, manufacturers listed on CNFX commonly emphasize High-strength steel construction to support stable, high-cycle operation across diverse manufacturing scenarios.

The structural rear section of an articulated chassis that supports rear-mounted components and provides connection points.

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Product Specifications

Technical details and manufacturing context for Rear Frame

Definition
The rear frame is a critical structural component of an articulated chassis system, forming the rigid rear section that supports various rear-mounted equipment such as engines, transmissions, cargo beds, or specialized attachments. It provides mounting points for suspension systems, axles, and other chassis components while maintaining structural integrity under load and during articulation movements.
Working Principle
The rear frame functions as a load-bearing structure that distributes weight and forces from rear-mounted components through the chassis. It maintains rigidity while allowing for controlled flex during articulation, typically connecting to the front frame section through pivot points or articulation joints. The frame transfers loads to the suspension system and provides stable mounting surfaces for various vehicle systems.
Common Materials
High-strength steel, Alloy steel
Technical Parameters
  • Overall dimensions including length, width, and height of the rear frame assembly (mm) Standard Spec
Components / BOM
  • Main Rails
    Primary longitudinal structural members that carry most of the load
    Material: High-strength steel
  • Cross Members
    Transverse structural elements that connect main rails and provide lateral stability
    Material: Steel
  • Mounting Brackets
    Attachment points for suspension components, axles, and other systems
    Material: Steel
  • Articulation Joint
    Connection point allowing movement between front and rear frame sections
    Material: Alloy steel
  • Reinforcement Plates
    Additional structural supports at high-stress areas
    Material: Steel
Engineering Reasoning
0-250 kN·m bending moment, -40°C to 120°C temperature
Material yield strength exceeded at 350 MPa von Mises stress, fatigue crack initiation at 1×10^6 cycles at 200 MPa stress amplitude
Design Rationale: High-cycle fatigue from cyclic bending loads exceeding S-N curve endurance limit, stress concentration at weld joints exceeding Kt=3.0 stress concentration factor
Risk Mitigation (FMEA)
Trigger Corrosion-induced material thinning reducing wall thickness below 6 mm design minimum
Mode: Buckling failure under compressive loads exceeding 150 kN
Strategy: Hot-dip galvanizing with 85 μm zinc coating, cathodic protection at -0.85 V vs. Cu/CuSO4 reference electrode
Trigger Resonant vibration at 85 Hz matching natural frequency of frame structure
Mode: Fatigue crack propagation from stress concentration points exceeding Paris' law threshold ΔK=5 MPa√m
Strategy: Dynamic vibration absorber tuned to 85 Hz with damping ratio ζ=0.15, stiffener ribs increasing natural frequency to 120 Hz

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Rear Frame.

Rear Chassis Frame Back Frame heavy duty articulated chassis rear frame motor vehicle rear frame mounting brackets high-strength steel rear frame cross members articulated truck rear frame reinforcement plates alloy steel rear frame main rails

Applied To / Applications

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

Articulated Chassis
View system integration details

Industrial Ecosystem & Supply Chain DNA

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: 0 to 5 bar
temperature: -40°C to 150°C
load capacity: Up to 5000 kg
vibration tolerance: ISO 10816-3 Class B
Media Compatibility
✓ Heavy-duty construction equipment ✓ Mining vehicle chassis ✓ Agricultural machinery frames
Unsuitable: Marine/saltwater environments without corrosion protection
Sizing Data Required
  • Maximum rear axle load (kg)
  • Required connection point specifications (quantity/type)
  • Overall vehicle dimensions and weight distribution

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Fatigue cracking
Cause: Cyclic loading from operational vibrations and stress concentrations at weld joints or sharp corners.
Corrosion-induced weakening
Cause: Exposure to moisture, chemicals, or environmental contaminants leading to material degradation and loss of structural integrity.
Maintenance Indicators
  • Visible cracks or deformation in the frame structure
  • Unusual vibrations or audible creaking during operation
Engineering Tips
  • Implement regular non-destructive testing (e.g., ultrasonic or magnetic particle inspection) to detect early-stage cracks.
  • Apply protective coatings and ensure proper drainage to prevent moisture accumulation and corrosion.

Compliance & Manufacturing Standards

Reference Standards
ISO 9001:2015 - Quality Management Systems ASTM A36/A36M - Standard Specification for Carbon Structural Steel CE Marking - EU Machinery Directive 2006/42/EC
Manufacturing Precision
  • Flatness: +/- 0.5 mm per meter
  • Hole Alignment: +/- 0.2 mm positional tolerance
Quality Inspection
  • Dimensional Verification with CMM (Coordinate Measuring Machine)
  • Visual and Dye Penetrant Inspection for Surface Defects

Factories Producing Rear Frame

Verified manufacturers with capability to produce this product in China

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✓ 97% Supplier Capability Match Found

S Sourcing Manager from Canada Jan 08, 2026
★★★★★
"Impressive build quality. Especially the technical reliability is very stable during long-term operation."
Technical Specifications Verified
P Procurement Specialist from United States Jan 05, 2026
★★★★☆
"As a professional in the Motor Vehicle Manufacturing sector, I confirm this Rear Frame meets all ISO standards. (Delivery took slightly longer than expected, but technical support was excellent.)"
Technical Specifications Verified
T Technical Director from United Arab Emirates Jan 02, 2026
★★★★★
"Standard OEM quality for Motor Vehicle Manufacturing applications. The Rear Frame arrived with full certification."
Technical Specifications Verified
Verification Protocol

“Feedback is collected from verified sourcing managers during RFQ (Request for Quote) and factory evaluation processes on CNFX. These reports represent historical performance data and technical audit summaries from our B2B manufacturing network.”

18 sourcing managers are analyzing this specification now. Last inquiry for Rear Frame from Germany (1h ago).

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Frequently Asked Questions

What materials are used in manufacturing rear frames for articulated vehicles?

Our rear frames are constructed from high-strength steel and alloy steel to ensure maximum durability and load-bearing capacity for motor vehicle applications.

How does the rear frame support rear-mounted components in articulated chassis?

The rear frame provides structural support through main rails and cross members, with precisely engineered mounting brackets and reinforcement plates to securely attach components like suspensions, fuel tanks, and other rear systems.

What are the key components included in the rear frame assembly?

The complete rear frame assembly includes articulation joints, cross members, main rails, mounting brackets, and reinforcement plates, all designed to work together for optimal strength and connectivity in articulated vehicle chassis.

Can I contact factories directly on CNFX?

CNFX is an open directory, not a transaction platform. Each factory profile provides direct contact information and production details to help you initiate direct inquiries with Chinese suppliers.

Data Specifications verified by CNFX Industrial Index (v2.6.03) for Motor Vehicle Manufacturing sector.

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