Industry-Verified Manufacturing Data (2026)

Bearing

Based on aggregated insights from multiple verified 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
    Fits onto the shaft and rotates with it, providing raceway for rolling elements
    Material: Chrome steel
  • Outer ring
    Stationary component that fits into housing, providing outer raceway
    Material: Chrome steel
  • Rolling elements
    Balls or rollers that reduce friction by rolling between raceways
    Material: Chrome steel or ceramic
  • Cage/retainer
    Separates and maintains proper spacing between rolling elements
    Material: Steel, brass, or polymer
  • Seals/shields
    Protect bearing interior from contaminants and retain lubrication
    Material: Rubber or metal
Engineering Reasoning
0-15000 rpm rotational speed, -40°C to 150°C temperature, 0.1-100 kN radial load
Contact stress exceeds 4.2 GPa (yield strength of AISI 52100 steel), temperature surpasses 150°C (lubricant breakdown), or vibration amplitude exceeds 7.1 mm/s RMS
Design Rationale: Hertzian contact stress causing subsurface fatigue spalling, thermal expansion differentials exceeding 11 μm/m·K mismatch, lubricant film thickness falling below 0.1 μm (λ ratio <1)
Risk Mitigation (FMEA)
Trigger Contaminant particle ingress exceeding 15 μm diameter
Mode: Surface indentation leading to premature fatigue spalling
Strategy: Integral sealing with labyrinth design maintaining 0.05 MPa positive pressure differential
Trigger Lubricant starvation for >30 seconds at >5000 rpm
Mode: Boundary lubrication transition causing adhesive wear and seizure
Strategy: Forced oil circulation system with 0.3 L/min flow rate and <5 μm filtration

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 DNA

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

Verified manufacturers with capability to produce this product in China

✓ 94% Supplier Capability Match Found

S Sourcing Manager from United Arab Emirates Jan 24, 2026
★★★★★
"Reliable performance in harsh Machinery and Equipment Manufacturing environments. No issues with the Bearing so far."
Technical Specifications Verified
P Procurement Specialist from Australia Jan 21, 2026
★★★★☆
"Testing the Bearing 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
T Technical Director from Singapore Jan 18, 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 Bearing from Vietnam (1h ago).

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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.

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