Industry-Verified Manufacturing Data (2026)

Eccentric Shaft Assembly

Based on aggregated insights from multiple verified factory profiles within the CNFX directory, the standard Eccentric Shaft Assembly 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 Eccentric Shaft Assembly is characterized by the integration of Eccentric Shaft and Eccentric Weights. In industrial production environments, manufacturers listed on CNFX commonly emphasize Alloy Steel construction to support stable, high-cycle operation across diverse manufacturing scenarios.

A mechanical assembly that generates eccentric motion to drive vibration in screening and feeding equipment.

Product Specifications

Technical details and manufacturing context for Eccentric Shaft Assembly

Definition
The eccentric shaft assembly is a critical component of a Vibrating Grizzly Feeder that converts rotational motion into linear vibratory motion. It consists of an eccentric shaft with offset weights or lobes, bearings, and mounting components that create controlled vibration for material separation and feeding.
Working Principle
When the eccentric shaft rotates, the offset mass creates an unbalanced force that generates linear vibration. This vibration is transmitted through the feeder structure to move and separate materials based on size and density.
Common Materials
Alloy Steel, Bearing Steel
Technical Parameters
  • Eccentricity distance (offset from center) (mm) Customizable
Components / BOM
  • Eccentric Shaft
    Main rotating component with offset mass to generate vibration
    Material: Alloy Steel
  • Eccentric Weights
    Adjustable or fixed weights that create unbalanced force
    Material: Steel
  • Bearing Housings
    Support and contain bearings for smooth rotation
    Material: Cast Iron or Steel
  • Spherical Roller Bearings
    Allow rotation while accommodating misalignment and heavy loads
    Material: Bearing Steel
  • Shaft Seals
    Prevent contamination and retain lubrication
    Material: Rubber or Polymer
Engineering Reasoning
0.5-3.0 mm eccentricity at 800-1800 RPM
Eccentric bearing temperature exceeding 120°C or radial clearance exceeding 0.15 mm
Design Rationale: Brinelling fatigue from Hertzian contact stress exceeding 1.8 GPa at bearing-raceway interface during cyclic loading
Risk Mitigation (FMEA)
Trigger Lubricant viscosity breakdown at 90°C operating temperature
Mode: Bearing seizure causing shaft deflection exceeding 0.25 mm
Strategy: Forced oil circulation cooling system maintaining lubricant at 40-60°C
Trigger Resonant vibration at 27 Hz matching shaft natural frequency
Mode: Fatigue crack propagation at shaft shoulder fillet radius
Strategy: Dynamic balancing to ISO 1940 G6.3 standard with damping mounts

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Eccentric Shaft Assembly.

Applied To / Applications

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

Industrial Ecosystem & Supply Chain DNA

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Not applicable (mechanical assembly)
other spec: Max vibration amplitude: 15mm, Max operating frequency: 25Hz, Max slurry concentration: 60% solids by weight
temperature: -20°C to 120°C
Media Compatibility
✓ Dry bulk materials (aggregates, grains) ✓ Wet slurries (mineral processing) ✓ Industrial powders (chemicals, plastics)
Unsuitable: Corrosive chemical environments without proper sealing
Sizing Data Required
  • Required vibration amplitude (mm)
  • Operating frequency (Hz)
  • Total dynamic load (kg)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Bearing fatigue failure
Cause: Cyclic loading from eccentric motion exceeding bearing fatigue limits, often due to improper load distribution, misalignment, or inadequate lubrication leading to spalling and cracking.
Shaft bending or fracture
Cause: High stress concentrations at keyways or fillets combined with torsional and bending stresses from off-center loads, exacerbated by material defects, corrosion pitting, or shock loads.
Maintenance Indicators
  • Excessive vibration or audible knocking during operation indicating bearing wear or shaft imbalance
  • Visible oil leakage or discoloration around bearing housings suggesting seal failure or overheating
Engineering Tips
  • Implement precision laser alignment during installation and periodic checks to minimize eccentric loading on bearings and shaft
  • Use continuous oil analysis and condition monitoring to detect early wear particles and maintain optimal lubrication viscosity for eccentric motion profiles

Compliance & Manufacturing Standards

Reference Standards
ISO 286-2:2010 (Limits and fits) ANSI B4.1-1967 (Preferred limits and fits for cylindrical parts) DIN 7184-1 (Tolerances for linear and angular dimensions)
Manufacturing Precision
  • Bore diameter: +/-0.015mm
  • Eccentricity: +/-0.01mm
Quality Inspection
  • Dimensional verification with CMM (Coordinate Measuring Machine)
  • Magnetic particle inspection for surface cracks

Factories Producing Eccentric Shaft Assembly

Verified manufacturers with capability to produce this product in China

✓ 95% Supplier Capability Match Found

T Technical Director from Brazil Jan 06, 2026
★★★★★
"Reliable performance in harsh Machinery and Equipment Manufacturing environments. No issues with the Eccentric Shaft Assembly so far."
Technical Specifications Verified
P Project Engineer from Canada Jan 03, 2026
★★★★☆
"Testing the Eccentric Shaft Assembly 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 United States Dec 31, 2025
★★★★★
"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.”

17 sourcing managers are analyzing this specification now. Last inquiry for Eccentric Shaft Assembly from India (1h ago).

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Frequently Asked Questions

What is the primary function of an eccentric shaft assembly in machinery?

The eccentric shaft assembly generates controlled eccentric motion to drive vibration in screening, feeding, and conveying equipment, essential for material separation and flow in industrial processes.

What materials are used in manufacturing eccentric shaft assemblies?

Our eccentric shaft assemblies are constructed from high-grade alloy steel for structural components and bearing steel for precision parts, ensuring durability, wear resistance, and reliable performance under heavy loads.

What maintenance is required for eccentric shaft assemblies?

Regular maintenance includes lubrication of spherical roller bearings, inspection of shaft seals for wear, monitoring eccentric weights for balance, and checking bearing housings for proper alignment to prevent premature failure.

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.

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