Structured Manufacturing Data (2026)

Bearing

Based on aggregated insights from structured factory profiles within the CNFX directory, the standard Bearing 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 Bearing is characterized by the integration of Inner ring and Outer ring. In industrial production environments, manufacturers listed on CNFX commonly emphasize Chrome steel construction to support stable, high-cycle operation across diverse manufacturing scenarios.

A mechanical component that supports rotational or linear movement while reducing friction between moving parts.

Product Specifications

Technical details and manufacturing context for Bearing

Definition
Within a Housing/Pillow Block assembly, the bearing is the critical rotating element that enables smooth shaft rotation while supporting radial and/or axial loads. It interfaces directly with the shaft and is contained within the housing structure, which provides alignment, protection, and lubrication support.
Working Principle
The bearing operates by using rolling elements (balls, rollers) or sliding surfaces to separate moving parts, converting sliding friction into rolling friction or minimizing contact area to reduce wear and energy loss. In pillow block applications, it typically handles moderate to heavy loads with precise alignment maintained by the housing.
Common Materials
Chrome steel, Stainless steel, Ceramic
Technical Parameters
  • Bore diameter (inner diameter) that matches the shaft size (mm) Customizable
Components / BOM
  • Inner ring Part
    Fits onto the shaft and rotates with it, providing raceway for rolling elements
    Material: Chrome steel
  • Outer ring Part
    Stationary component that fits into housing, providing outer raceway
    Material: Chrome steel
  • Rolling elements Part
    Balls or rollers that reduce friction by rolling between raceways
    Material: Chrome steel or ceramic
  • Cage/retainer Part
    Separates and maintains proper spacing between rolling elements
    Material: Steel, brass, or polymer
  • Seals/shields Part
    Protect bearing interior from contaminants and retain lubrication
    Material: Rubber or metal

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Bearing.

Applied To / Applications

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

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
speed: Up to 1,500,000 DN (bore diameter in mm × RPM)
pressure: Up to 500 MPa static, 300 MPa dynamic
temperature: -40°C to +150°C (standard), up to +300°C with special materials
load capacity: Radial: Up to 1,000 kN, Axial: Up to 500 kN
Media Compatibility
✓ Lubricated steel-on-steel systems ✓ Clean oil or grease environments ✓ Dry polymer applications (e.g., PTFE composites)
Unsuitable: High-concentration abrasive slurry without proper sealing
Sizing Data Required
  • Radial load (kN)
  • Axial load (kN)
  • Rotational speed (RPM)
  • Required service life (hours)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Fatigue spalling
Cause: Cyclic loading exceeding material endurance limit, leading to subsurface crack initiation and propagation to surface, often due to improper load distribution, misalignment, or material defects.
Lubrication failure
Cause: Inadequate or contaminated lubricant causing metal-to-metal contact, resulting in overheating, scoring, and accelerated wear; common causes include incorrect lubricant selection, contamination (water, particles), or insufficient lubrication intervals.
Maintenance Indicators
  • High-frequency vibration or audible squealing/grinding noises during operation
  • Abnormal temperature rise (typically >70°C/158°F) detected via infrared thermography or touch
Engineering Tips
  • Implement precision alignment during installation (laser alignment preferred) and maintain proper shaft-housing fits to prevent induced stresses and uneven load distribution.
  • Establish condition-based lubrication program using appropriate viscosity grease/oil, monitor lubricant cleanliness (ISO cleanliness codes), and utilize ultrasonic or vibration analysis for early fault detection.

Compliance & Manufacturing Standards

Reference Standards
ISO 15:2011 (Rolling bearings - Radial bearings - Boundary dimensions, general plan) ANSI/ABMA Std 20 (Radial Bearings of Ball, Cylindrical Roller, and Spherical Roller Types - Metric Design) DIN 620-2 (Rolling bearings - Tolerances - Part 2: Measuring and gauging principles and methods)
Manufacturing Precision
  • Bore diameter tolerance: ±0.0025 mm for precision class P5
  • Radial runout tolerance: 0.003 mm for precision class P4
Quality Inspection
  • Vibration analysis test (ISO 15242: Rolling bearings - Measuring methods for vibration)
  • Hardness testing (Rockwell C scale) per ASTM E18

Factories Producing Bearing

Manufacturer profiles with relevant production capability in China

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Technical documentation
4/5
Manufacturing capability
4/5
Inspection readiness
5/5
Supplier transparency
3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

What are the main components in a bearing's BOM?

A bearing's Bill of Materials typically includes the cage/retainer, inner ring, outer ring, rolling elements (like balls or rollers), and seals or shields for protection.

When should I choose ceramic bearings over steel?

Ceramic bearings are ideal for high-speed, high-temperature, or corrosive environments where steel bearings might fail. They offer lower friction, longer life, and better performance in extreme conditions.

How do bearings reduce friction in machinery?

Bearings use rolling elements (balls or rollers) between inner and outer rings to replace sliding friction with rolling friction, significantly reducing wear and energy loss in moving parts.

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 Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

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