Industry-Verified Manufacturing Data (2026)

Bogie frame

Based on aggregated insights from multiple verified factory profiles within the CNFX directory, the standard Bogie 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 Bogie frame is characterized by the integration of Side frame and Cross member/Transom. 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 primary structural component of a bogie that supports the vehicle body and connects to the wheelsets.

View Full Specifications Explore Manufacturing Sources

Product Specifications

Technical details and manufacturing context for Bogie frame

Definition
The bogie frame is the central structural element of a railway vehicle bogie (truck) that serves as the foundation for mounting all other components. It transfers the weight of the vehicle body to the wheelsets through suspension systems, absorbs dynamic forces during operation, and provides attachment points for brakes, traction motors, and other equipment.
Working Principle
The bogie frame functions as a rigid structural platform that distributes vertical loads from the vehicle body to the wheelsets via primary suspension. It withstands longitudinal traction and braking forces, lateral forces during curving, and vertical dynamic loads from track irregularities. The frame's design ensures proper alignment of wheelsets and maintains structural integrity under various operational stresses.
Common Materials
High-strength steel, Cast steel, Welded steel
Technical Parameters
  • Overall dimensions including length, width, and height; critical for compatibility with specific bogie designs and vehicle types (mm) Customizable
Components / BOM
  • Side frame
    Forms the longitudinal structural members that connect the wheelsets and support vertical loads
    Material: High-strength steel
  • Cross member/Transom
    Connects the side frames laterally to maintain structural rigidity and provide mounting points
    Material: Steel
  • Bolster attachment points
    Interface locations for connecting the vehicle body bolster to the bogie frame
    Material: Steel
  • Suspension mounting brackets
    Provides secure attachment points for primary suspension components (springs, dampers)
    Material: Steel
Engineering Reasoning
Stress: 150-250 MPa, Deflection: 0.5-2.0 mm under 200 kN load
Yield strength: 350 MPa (S355 steel), Fatigue limit: 180 MPa at 2×10⁶ cycles (R=-1)
Design Rationale: High-cycle fatigue from cyclic bending stresses exceeding 180 MPa at stress concentration points (e.g., weld toes with Kt=2.5)
Risk Mitigation (FMEA)
Trigger Residual tensile stress >200 MPa at weld zones from improper post-weld heat treatment
Mode: Fatigue crack initiation at weld toe propagating at 1×10⁻⁸ m/cycle (Paris' law, C=1.5×10⁻¹¹, m=3)
Strategy: Shot peening to induce 400-600 MPa compressive residual stress layer, reducing effective stress ratio to R<0
Trigger Corrosion rate >0.1 mm/year in chloride environments (ISO 9223 C4 category)
Mode: Stress corrosion cracking at corrosion pits with depth >0.5 mm acting as stress concentrators (Kt>3)
Strategy: Hot-dip galvanizing with 85 μm zinc coating per EN ISO 1461, plus epoxy-polyamide paint system (DFT: 120 μm)

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Bogie frame.

heavy duty bogie frame for trucks rail vehicle bogie side frame welded steel bogie cross member bogie suspension mounting brackets cast steel bogie bolster attachment

Applied To / Applications

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

Bogie (Truck)
View system integration details
Travel Bogie
View system integration details

Industrial Ecosystem & Supply Chain DNA

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: N/A (structural load-bearing component)
other spec: Maximum dynamic load: 25-40 tons per axle (depending on design), Fatigue life: 2-4 million cycles
temperature: -40°C to +80°C (operational range)
Media Compatibility
✓ Rail vehicle applications (passenger/freight) ✓ High-speed train bogies ✓ Urban transit/metro systems
Unsuitable: Marine/saltwater corrosive environments without specialized coatings
Sizing Data Required
  • Axle load capacity (tons)
  • Vehicle speed requirements (km/h)
  • Track gauge and wheelbase dimensions (mm)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Fatigue cracking
Cause: Cyclic loading from track irregularities, dynamic forces, and stress concentrations at weld joints or geometric transitions leading to crack initiation and propagation.
Corrosion-induced thinning
Cause: Exposure to moisture, de-icing salts, and environmental contaminants causing localized or uniform material loss, particularly in crevices and weld zones.
Maintenance Indicators
  • Visible cracks or paint flaking indicating underlying structural defects
  • Unusual squeaking, grinding, or rattling noises during operation suggesting loose components or structural deformation
Engineering Tips
  • Implement regular non-destructive testing (e.g., magnetic particle or ultrasonic inspection) at high-stress areas to detect early-stage cracks before critical propagation.
  • Apply protective coatings and ensure proper drainage design to prevent moisture accumulation, complemented by routine cleaning to remove corrosive contaminants.

Compliance & Manufacturing Standards

Reference Standards
ISO 1005-1: Railway rolling stock materials - Part 1: General requirements for steel EN 15085-2: Railway applications - Welding of railway vehicles and components - Part 2: Quality requirements and certification of welding manufacturer ASTM A370: Standard Test Methods and Definitions for Mechanical Testing of Steel Products
Manufacturing Precision
  • Weld seam alignment: +/- 1.5mm
  • Bogie frame squareness: 0.5mm per meter diagonal measurement
Quality Inspection
  • Magnetic Particle Inspection (MPI) for surface crack detection
  • Ultrasonic Testing (UT) for internal weld and material integrity

Factories Producing Bogie frame

Verified manufacturers with capability to produce this product in China

Add your factory

✓ 93% Supplier Capability Match Found

P Procurement Specialist from Germany Jan 15, 2026
★★★★★
"The Bogie frame we sourced perfectly fits our Motor Vehicle Manufacturing production line requirements."
Technical Specifications Verified
T Technical Director from Brazil Jan 12, 2026
★★★★★
"Found 35+ suppliers for Bogie frame on CNFX, but this spec remains the most cost-effective."
Technical Specifications Verified
P Project Engineer from Canada Jan 09, 2026
★★★★★
"The technical documentation for this Bogie frame is very thorough, especially regarding technical reliability."
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.”

9 sourcing managers are analyzing this specification now. Last inquiry for Bogie frame from Brazil (1h ago).

Supply Chain Compatible Machinery & Devices

Automotive Battery Management System

Electronic control system for monitoring and managing vehicle battery packs.

Explore Specs →
Automotive Wireless Power Transfer System

Wireless charging system for electric vehicles using electromagnetic induction.

Explore Specs →
Automotive Solid-State Battery Pack

High-energy-density solid-state battery system for electric vehicles

Explore Specs →
Automotive Active Grille Shutter System

Aerodynamic system with motorized shutters for vehicle thermal and efficiency management.

Explore Specs →

Frequently Asked Questions

What materials are used in manufacturing bogie frames?

Bogie frames are typically constructed from high-strength steel, cast steel, or welded steel to ensure durability and structural integrity under heavy loads.

What are the main components of a bogie frame assembly?

Key components include the side frame, cross member/transom, bolster attachment points, and suspension mounting brackets, which work together to support the vehicle body.

How does a bogie frame contribute to vehicle performance?

The bogie frame distributes weight evenly, connects the wheelsets to the vehicle body, and provides mounting points for suspension systems, ensuring stability and smooth operation.

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.

Get Quote for Bogie frame

Request technical pricing, lead times, or customized specifications for Bogie frame directly from verified manufacturing units.

Your business information is encrypted and only shared with verified Bogie frame suppliers.

Thank you! Your message has been sent. We'll respond within 1–3 business days.
Thank you! Your message has been sent. We'll respond within 1–3 business days.

Need to Manufacture Bogie frame?

Connect with verified factories specializing in this product category

Add Your Factory Contact Us
Previous Product
Body Fixture / Carrier
Next Product
Brake Caliper