Industry-Verified Manufacturing Data (2026)

Gantry Frame / Structure

Based on aggregated insights from multiple verified factory profiles within the CNFX directory, the standard Gantry Frame / Structure used in the Machinery and Equipment Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Gantry Frame / Structure is characterized by the integration of Main Structural Rings and Radial Support Beams/Spokes. In industrial production environments, manufacturers listed on CNFX commonly emphasize High-strength steel alloy construction to support stable, high-cycle operation across diverse manufacturing scenarios.

The rigid structural framework that forms the rotating support for the Linear Accelerator (LINAC) gantry system.

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Product Specifications

Technical details and manufacturing context for Gantry Frame / Structure

Definition
The Gantry Frame/Structure is the foundational mechanical component of a Linear Accelerator (LINAC) gantry, providing the robust, precision-engineered framework that enables the gantry's 360-degree rotation around the patient. It serves as the primary load-bearing structure, supporting the weight of critical subsystems including the radiation source (accelerating waveguide or bending magnet assembly), beam collimation systems (MLC), imaging devices (kV/MV imagers), and patient positioning lasers. Its design ensures mechanical stability, vibration damping, and precise alignment under dynamic rotational forces, which is critical for accurate radiation beam delivery in radiotherapy.
Working Principle
The frame acts as a stable, rotating platform. Driven by a high-precision motor and bearing system, it rotates the entire mounted LINAC assembly around a fixed isocenter. Its structural rigidity maintains the precise spatial relationships between all mounted components (e.g., radiation source to collimator) during rotation, ensuring the radiation beam always converges at the treatment isocenter regardless of gantry angle. This allows for multi-angle radiation delivery while the patient remains stationary.
Common Materials
High-strength steel alloy, Precision-cast iron components
Technical Parameters
  • Isocentricity (Radiation beam alignment accuracy at isocenter during full rotation) (mm) Standard Spec
Components / BOM
  • Main Structural Rings
    Form the primary circular load-bearing elements of the rotating frame.
    Material: High-strength steel alloy
  • Radial Support Beams/Spokes
    Connect the central hub to the outer rings, providing torsional stiffness and distributing loads.
    Material: Steel alloy
  • Mounting Interfaces/Plates
    Precision-machined surfaces for attaching the LINAC head, imaging systems, and other subsystems.
    Material: Steel, often with ground surfaces
  • Bearing Race Integration
    Integrated or attached surface that interfaces with the large-diameter rotational bearing system.
    Material: Hardened steel
  • Main Structural Beams
    Primary load-bearing members that form the ring or arc of the gantry, transferring loads to the rotation bearing.
    Material: High-strength steel alloy
  • Mounting Plates/Interfaces
    Precision-machined surfaces and connection points for attaching the treatment head, imaging systems, and other ancillary equipment.
    Material: Steel or aluminum alloy
  • Reinforcement Ribs/Gussets
    Structural elements added to critical junctions to increase rigidity and prevent torsional flexing.
    Material: Steel
Engineering Reasoning
0.1-0.5 mm deflection under 5000 N load
1.2 mm permanent deformation at yield strength of 355 MPa (S355 structural steel)
Design Rationale: Plastic deformation due to exceeding yield strength under combined bending and torsional loads from LINAC rotation
Risk Mitigation (FMEA)
Trigger Resonant vibration at 15-25 Hz matching gantry rotation frequency
Mode: Fatigue crack propagation at weld joints
Strategy: Finite element analysis optimization with 30% safety margin from natural frequency
Trigger Thermal expansion differential of 0.012 mm/°C between steel frame and concrete foundation
Mode: Frame misalignment exceeding 0.3 mm tolerance
Strategy: Thermal expansion joints with 5 mm clearance and Invar alloy inserts

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Gantry Frame / Structure.

linear accelerator gantry frame structure high-strength steel LINAC gantry support precision-cast iron gantry structural components medical radiation therapy gantry framework rotating gantry structural beams and rings

Applied To / Applications

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

Linear Accelerator (LINAC) Gantry
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 component, not pressure vessel)
other spec: Max dynamic load: 5000 kg, Max static load: 8000 kg, Vibration tolerance: ≤ 0.5 mm displacement at 5-100 Hz, Humidity: 30-70% RH non-condensing
temperature: 10°C to 40°C (operational), -20°C to 60°C (storage)
Media Compatibility
✓ Medical radiation therapy environments ✓ Clean room assembly facilities ✓ Controlled industrial manufacturing areas
Unsuitable: Corrosive chemical exposure or salt spray environments
Sizing Data Required
  • LINAC weight and dimensions
  • Required rotational accuracy and stability specifications
  • Installation space constraints and foundation requirements

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Fatigue cracking
Cause: Cyclic loading from operational movements, vibration, or thermal expansion/contraction leading to stress concentration at weld joints, bolt holes, or sharp corners.
Corrosion-induced weakening
Cause: Exposure to moisture, chemicals, or atmospheric contaminants causing rust, pitting, or galvanic corrosion, particularly in joints, crevices, or areas with compromised protective coatings.
Maintenance Indicators
  • Visible cracks, especially at welded joints or stress points
  • Excessive vibration, unusual noises (creaking, popping), or noticeable deflection during operation
Engineering Tips
  • Implement regular non-destructive testing (e.g., ultrasonic, magnetic particle) at high-stress areas to detect early-stage cracks before catastrophic failure.
  • Maintain protective coatings and ensure proper drainage to prevent water/chemical accumulation; use corrosion-resistant materials or cathodic protection in aggressive environments.

Compliance & Manufacturing Standards

Reference Standards
ISO 9001:2015 Quality Management Systems ANSI B30.2 Overhead and Gantry Cranes CE Marking per Machinery Directive 2006/42/EC
Manufacturing Precision
  • Vertical Alignment: +/- 0.5mm per meter
  • Weld Seam Flatness: 0.2mm over 300mm length
Quality Inspection
  • Ultrasonic Testing (UT) for weld integrity
  • Dimensional Verification with Laser Tracker

Factories Producing Gantry Frame / Structure

Verified manufacturers with capability to produce this product in China

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✓ 97% Supplier Capability Match Found

P Procurement Specialist from Canada Jan 11, 2026
★★★★★
"Impressive build quality. Especially the technical reliability is very stable during long-term operation."
Technical Specifications Verified
T Technical Director from United States Jan 08, 2026
★★★★★
"As a professional in the Machinery and Equipment Manufacturing sector, I confirm this Gantry Frame / Structure meets all ISO standards."
Technical Specifications Verified
P Project Engineer from United Arab Emirates Jan 05, 2026
★★★★★
"Standard OEM quality for Machinery and Equipment Manufacturing applications. The Gantry Frame / Structure 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.”

12 sourcing managers are analyzing this specification now. Last inquiry for Gantry Frame / Structure from Thailand (48m ago).

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Frequently Asked Questions

What materials are used in the gantry frame construction?

The gantry frame is constructed from high-strength steel alloy and precision-cast iron components, ensuring maximum rigidity and durability for LINAC system operation.

How does the bearing race integration work in the gantry structure?

The bearing race is seamlessly integrated into the main structural rings, providing smooth 360-degree rotation while maintaining precise alignment for radiation therapy applications.

What are the key structural components in the gantry frame assembly?

Key components include main structural beams and rings, radial support beams/spokes, reinforcement ribs/gussets, and mounting plates/interfaces that form the complete rotating support system.

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 Machinery and Equipment Manufacturing sector.

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