Industry-Verified Manufacturing Data (2026)

Stacking Fixture

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

Technical Definition & Core Assembly

A canonical Stacking Fixture is characterized by the integration of Base Plate and Alignment Pins. In industrial production environments, manufacturers listed on CNFX commonly emphasize Tool steel construction to support stable, high-cycle operation across diverse manufacturing scenarios.

A specialized tool used to precisely align and secure electrical steel laminations during the assembly of transformer or motor cores.

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Product Specifications

Technical details and manufacturing context for Stacking Fixture

Definition
A stacking fixture is a critical component in the manufacturing of electrical steel lamination cores, designed to hold individual laminations in perfect alignment while they are stacked to form the core structure. It ensures consistent positioning, prevents misalignment, and maintains the required insulation between laminations, which is essential for optimal magnetic performance and energy efficiency in electrical equipment.
Working Principle
The fixture typically consists of alignment pins, clamping mechanisms, and a base plate. Laminations are placed over the alignment pins to ensure precise positioning. Once stacked to the required height, the clamping mechanism secures the stack to prevent movement during handling or subsequent processing like welding or bonding.
Common Materials
Tool steel, Stainless steel
Technical Parameters
  • Fixture dimensions must match the lamination profile and stack height requirements (mm) Customizable
Components / BOM
  • Base Plate
    Provides stable foundation and mounting surface for the fixture
    Material: steel
  • Alignment Pins
    Precisely position each lamination during stacking process
    Material: hardened steel
  • Clamping Mechanism
    Secures the stacked laminations to prevent movement
    Material: steel
Engineering Reasoning
0.5-2.0 kN clamping force, 0.01-0.05 mm alignment tolerance, 20-80°C operating temperature
Clamping force exceeds 2.5 kN causing permanent deformation, alignment tolerance exceeds 0.1 mm causing core misalignment, temperature exceeds 100°C causing thermal expansion mismatch
Design Rationale: Yield strength of fixture material (typically 4140 steel at 415 MPa) exceeded under excessive clamping force, cumulative plastic deformation from cyclic loading at 50-100 Hz during lamination stacking, differential thermal expansion between fixture (steel, α=11.5×10⁻⁶/°C) and laminations (electrical steel, α=12.5×10⁻⁶/°C)
Risk Mitigation (FMEA)
Trigger Insufficient clamping force below 0.5 kN during lamination stacking
Mode: Lamination slippage and misalignment exceeding 0.1 mm tolerance
Strategy: Force monitoring system with piezoelectric load cells and automatic pressure compensation
Trigger Accumulated ferrous dust particles exceeding 0.1 mm thickness on alignment surfaces
Mode: Progressive alignment error reaching 0.08 mm after 5000 cycles
Strategy: Integrated air knife cleaning system operating at 3 bar pressure with 30-second intervals

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Stacking Fixture.

electrical steel lamination stacking fixture transformer core assembly tool motor core alignment fixture precision stacking tool for laminations electrical equipment manufacturing fixture

Industrial Ecosystem & Supply Chain DNA

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Up to 5 MPa clamping pressure (adjustable based on lamination stack height)
other spec: Stack height tolerance: ±0.05 mm, Alignment accuracy: ±0.02 mm, Maximum stack diameter: 1000 mm
temperature: Ambient to 150°C (typical operating range for electrical steel processing)
Media Compatibility
✓ Electrical steel laminations (silicon steel) ✓ Insulation-coated laminations ✓ Grain-oriented steel sheets
Unsuitable: Corrosive environments (acidic/alkaline atmospheres) or abrasive particulate contamination
Sizing Data Required
  • Maximum lamination stack height (mm)
  • Lamination outer diameter (mm)
  • Required clamping force per unit area (N/mm²)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Structural fatigue cracking
Cause: Cyclic loading from repeated stacking/unstacking operations causing stress concentration at weld joints or sharp corners
Alignment degradation
Cause: Wear at locating pins/bushings and guide surfaces due to abrasive contamination and improper handling during loading/unloading
Maintenance Indicators
  • Visible cracks or deformation at weld points and structural joints
  • Excessive play or misalignment during component placement indicating worn locating features
Engineering Tips
  • Implement regular dimensional verification using precision gauges to detect early alignment drift before functional failure occurs
  • Apply protective coatings on wear surfaces and establish controlled cleaning procedures to prevent abrasive contamination accumulation

Compliance & Manufacturing Standards

Reference Standards
ISO 9001:2015 - Quality Management Systems ANSI MH16.1-2012 - Industrial Storage Racks CE Marking - Machinery Directive 2006/42/EC
Manufacturing Precision
  • Flatness: +/- 0.5mm per meter
  • Hole Position: +/- 0.2mm
Quality Inspection
  • Load Testing - 150% of rated capacity
  • Dimensional Verification with CMM

Factories Producing Stacking Fixture

Verified manufacturers with capability to produce this product in China

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✓ 93% Supplier Capability Match Found

T Technical Director from Germany Feb 23, 2026
★★★★★
"Reliable performance in harsh Electrical Equipment Manufacturing environments. No issues with the Stacking Fixture so far."
Technical Specifications Verified
P Project Engineer from Brazil Feb 20, 2026
★★★★☆
"Testing the Stacking Fixture now; the technical reliability results are within 1% of the laboratory datasheet. (Delivery took slightly longer than expected, but technical support was excellent.)"
Technical Specifications Verified
S Sourcing Manager from Canada Feb 17, 2026
★★★★★
"Impressive build quality. Especially the technical reliability is very stable during long-term operation."
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.”

14 sourcing managers are analyzing this specification now. Last inquiry for Stacking Fixture from Vietnam (1h ago).

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Frequently Asked Questions

What is the primary function of a stacking fixture in electrical equipment manufacturing?

A stacking fixture precisely aligns and secures electrical steel laminations during the assembly of transformer or motor cores, ensuring proper stacking for optimal magnetic performance and structural integrity.

What materials are used in this stacking fixture and why?

This fixture is constructed from tool steel and stainless steel for durability, corrosion resistance, and the ability to maintain precise alignment under repeated use in manufacturing environments.

How does the clamping mechanism work in this stacking fixture?

The clamping mechanism securely holds laminations in place during assembly, typically using adjustable pressure to accommodate varying lamination thicknesses while preventing movement that could affect core quality.

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 Electrical Equipment Manufacturing sector.

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