Industry-Verified Manufacturing Data (2026)

Bearing Assembly

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

Technical Definition & Core Assembly

A canonical Bearing Assembly is characterized by the integration of Outer Race and Inner Race. In industrial production environments, manufacturers listed on CNFX commonly emphasize Stainless Steel construction to support stable, high-cycle operation across diverse manufacturing scenarios.

A mechanical assembly within a furniture hinge that facilitates smooth rotational movement and reduces friction between moving parts.

Product Specifications

Technical details and manufacturing context for Bearing Assembly

Definition
The bearing assembly is a critical sub-component of furniture hinges, specifically designed to enable controlled rotation of doors, cabinets, and other furniture elements. It consists of precision-engineered bearing elements housed within a structural frame, ensuring minimal friction, wear resistance, and consistent performance over the hinge's operational lifespan. This assembly directly contributes to the hinge's smooth opening/closing action, load-bearing capacity, and overall durability.
Working Principle
The bearing assembly operates on the principle of rolling or sliding contact to reduce friction. In furniture hinges, it typically contains ball bearings or bushings that rotate within races or sleeves. When torque is applied to the hinge (e.g., opening a door), the bearing elements roll or slide, converting direct metal-on-metal friction into smoother rotational motion. This distributes mechanical stress evenly, prevents seizing, and maintains alignment between hinge knuckles and leaves.
Common Materials
Stainless Steel, Carbon Steel, Brass, Polymer (e.g., POM, Nylon)
Technical Parameters
  • Inner/outer diameter and width of bearing assembly; critical for compatibility with hinge pin and knuckle dimensions. (mm) Per Request
Components / BOM
  • Outer Race
    Provides structural housing and mounting surface within hinge knuckle.
    Material: Stainless Steel
  • Inner Race
    Interfaces with hinge pin; rotates relative to outer race.
    Material: Carbon Steel
  • Rolling Elements
    Balls or rollers that facilitate smooth rotation by reducing friction between races.
    Material: Chrome Steel
  • Cage/Retainer
    Separates and maintains even spacing of rolling elements.
    Material: Brass or Polymer
  • Seal/Shield
    Protects internal components from dust, debris, and retains lubrication.
    Material: Rubber or Polymer
Engineering Reasoning
0-120°C temperature, 0-50 N·m torque, 0-1000 rpm rotational speed
Lubricant breakdown at 150°C, bearing seizure at 80 N·m torque, surface pitting at 10^7 stress cycles
Design Rationale: Hertzian contact stress exceeding 1.5 GPa causes subsurface fatigue cracks; lubricant thermal degradation at Arrhenius rate constant k=1.2×10^4 s^-1
Risk Mitigation (FMEA)
Trigger Contaminant ingress (particle size >5 μm) exceeding ISO 4406 18/16/13 cleanliness level
Mode: Abrasive wear increasing surface roughness Ra >0.8 μm
Strategy: Integrate labyrinth seals with 0.1 mm clearance and IP65-rated housing
Trigger Misalignment exceeding 0.05° angular deviation from shaft axis
Mode: Edge loading causing localized stress concentration Kt=3.2
Strategy: Implement self-aligning spherical bearing design with ±2° compensation

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Bearing 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: Max 5 MPa static load
other spec: Max rotational speed: 120 RPM
temperature: -20°C to 80°C
Media Compatibility
✓ Indoor air environments ✓ Wood furniture applications ✓ Light lubricated conditions
Unsuitable: High-moisture or corrosive chemical environments
Sizing Data Required
  • Door/panel weight (kg)
  • Hinge mounting hole diameter (mm)
  • Required angular rotation range (degrees)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Fatigue spalling
Cause: Cyclic loading exceeding material endurance limit, often from improper preload, misalignment, or contamination-induced stress concentrations
Lubrication failure
Cause: Insufficient or degraded lubricant leading to metal-to-metal contact, caused by incorrect viscosity, contamination, excessive temperature, or improper lubrication intervals
Maintenance Indicators
  • High-frequency vibration or ultrasonic emissions indicating early-stage surface degradation
  • Abnormal temperature rise (>15°C above ambient) detected via infrared thermography or embedded sensors
Engineering Tips
  • Implement precision alignment during installation using laser alignment tools to maintain angular and parallel misalignment below 0.002 inches per inch
  • Establish condition-based lubrication program using oil analysis to monitor viscosity, water content, and particle counts, replenishing only when parameters exceed OEM thresholds

Compliance & Manufacturing Standards

Reference Standards
ISO 15:2011 (Rolling bearings - Radial bearings - Boundary dimensions, general plan) ANSI/ABMA 9:1990 (Load Ratings and Fatigue Life for Ball Bearings) DIN 620-1:2012 (Rolling bearings - Radial bearings - Boundary dimensions, general plan)
Manufacturing Precision
  • Bore diameter: ±0.0025mm for P5 precision class
  • Radial runout: 0.003mm for ABEC 5 precision
Quality Inspection
  • Vibration analysis for noise and defect detection
  • Dimensional verification using coordinate measuring machine (CMM)

Factories Producing Bearing Assembly

Verified manufacturers with capability to produce this product in China

✓ 95% Supplier Capability Match Found

P Procurement Specialist from Brazil Jan 31, 2026
★★★★★
"Testing the Bearing Assembly now; the technical reliability results are within 1% of the laboratory datasheet."
Technical Specifications Verified
T Technical Director from Canada Jan 28, 2026
★★★★★
"Impressive build quality. Especially the technical reliability is very stable during long-term operation."
Technical Specifications Verified
P Project Engineer from United States Jan 25, 2026
★★★★★
"As a professional in the Furniture Manufacturing sector, I confirm this Bearing Assembly meets all ISO standards."
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.”

8 sourcing managers are analyzing this specification now. Last inquiry for Bearing Assembly from Thailand (1h ago).

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Frequently Asked Questions

What materials are best for bearing assemblies in furniture manufacturing?

Stainless steel offers corrosion resistance for high-moisture environments, carbon steel provides durability for heavy-duty applications, brass reduces noise, and polymers like POM or nylon offer lightweight, self-lubricating options with low friction.

How does a bearing assembly improve furniture hinge performance?

The bearing assembly facilitates smooth rotational movement between hinge parts, reduces friction to prevent wear, minimizes noise during operation, and extends the lifespan of the furniture hinge by distributing load evenly across rolling elements.

What maintenance do furniture bearing assemblies require?

Most bearing assemblies in furniture are sealed or shielded to prevent contamination and require minimal maintenance. For unsealed types, periodic cleaning and lubrication with appropriate grease may be needed depending on material and usage frequency.

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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