Industry-Verified Manufacturing Data (2026)

Pivot Bearing

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

A bearing that allows rotational movement around a fixed pivot point in mechanical assemblies.

Product Specifications

Technical details and manufacturing context for Pivot Bearing

Definition
A pivot bearing is a specialized bearing component used in dancer arm or tension sensor systems to enable smooth rotational movement around a central pivot point. It supports the dancer arm while allowing it to pivot freely in response to material tension changes, ensuring accurate tension measurement and control.
Working Principle
The pivot bearing operates by providing a low-friction interface between the stationary mounting point and the rotating dancer arm. It uses rolling elements (balls or rollers) or a plain bearing surface to reduce friction, allowing the arm to rotate smoothly in response to tension variations while maintaining precise alignment and minimal resistance.
Common Materials
Bearing steel, Stainless steel, Bronze alloy
Technical Parameters
  • Bore diameter, outer diameter, and width dimensions (mm) Customizable
Components / BOM
  • Inner Race
    Rotates with the pivot shaft and provides a smooth surface for rolling elements
    Material: Bearing steel
  • Outer Race
    Stationary housing that supports the bearing assembly within the mounting structure
    Material: Bearing steel
  • Rolling Elements
    Balls or rollers that reduce friction between inner and outer races
    Material: Bearing steel or ceramic
  • Cage/Retainer
    Maintains proper spacing between rolling elements
    Material: Steel or polymer
  • Seals/Shields
    Protect bearing internals from contamination and retain lubrication
    Material: Rubber or metal
Engineering Reasoning
0-1000 N·m torque, -40°C to 120°C temperature, 0-1000 RPM rotational speed
Yield strength exceeded at 1200 N·m torque, Brinell hardness reduction below 200 HB at 150°C, surface fatigue spalling at 10⁷ cycles under 800 N·m load
Design Rationale: Hertzian contact stress exceeding material yield strength (σ_max > 1.1 GPa), thermal softening reducing hardness via Arrhenius-type diffusion (Q=150 kJ/mol), rolling contact fatigue initiating subsurface cracks at τ_max > 0.4 GPa shear stress
Risk Mitigation (FMEA)
Trigger Lubricant film thickness reduction below 0.1 μm (λ < 1) due to particulate contamination
Mode: Boundary lubrication regime causing adhesive wear and seizure
Strategy: Install 10 μm absolute filtration with β₁₀≥200 rating, implement ferrographic oil analysis at 100-hour intervals
Trigger Misalignment exceeding 0.05° angular deviation from shaft axis
Mode: Edge loading producing 2.5× nominal contact stress concentration
Strategy: Integrate self-aligning spherical seat with ±2° compensation, apply laser alignment during installation with <0.01° tolerance

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Pivot 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
pressure: Up to 10 MPa (100 bar) static, 5 MPa (50 bar) dynamic
other spec: Max rotational speed: 100 RPM, Load capacity: 50 kN radial, 25 kN axial
temperature: -40°C to 120°C (dependent on seal material)
Media Compatibility
✓ Lubricated steel-on-steel systems ✓ Hydraulic fluid environments ✓ Clean industrial air applications
Unsuitable: High-concentration abrasive slurry without filtration
Sizing Data Required
  • Maximum radial load (kN)
  • Required rotational speed (RPM)
  • Shaft diameter (mm)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Fatigue spalling
Cause: Cyclic loading exceeding material endurance limit, often due to misalignment, improper preload, or shock loads
Lubrication failure
Cause: Contaminated lubricant (particles, moisture), insufficient lubrication quantity, or incorrect lubricant viscosity for operating conditions
Maintenance Indicators
  • Abnormal vibration or audible grinding/clicking during rotation
  • Visible metal particles in lubricant or excessive heat generation at bearing housing
Engineering Tips
  • Implement precision laser alignment during installation and monitor alignment quarterly with vibration analysis
  • Establish condition-based lubrication program using oil analysis to monitor contamination and degradation, with strict filtration standards

Compliance & Manufacturing Standards

Reference Standards
ISO 1132-1:2000 (Rolling bearings - Tolerances - Part 1: Terms and definitions) ANSI/ABMA 20:1996 (Radial Bearings of Ball, Cylindrical Roller, and Spherical Roller Types - Metric Design) DIN 620-2:1994 (Rolling bearings - Tolerances - Part 2: Measuring and gauging principles for radial bearings)
Manufacturing Precision
  • Bore diameter tolerance: ±0.01 mm for precision class P4
  • Radial runout tolerance: 0.005 mm maximum for high-precision applications
Quality Inspection
  • Dimensional verification using coordinate measuring machine (CMM) for geometric tolerances
  • Ultrasonic testing for internal material defects and homogeneity

Factories Producing Pivot Bearing

Verified manufacturers with capability to produce this product in China

✓ 95% Supplier Capability Match Found

S Sourcing Manager from Brazil Feb 05, 2026
★★★★★
"As a professional in the Machinery and Equipment Manufacturing sector, I confirm this Pivot Bearing meets all ISO standards."
Technical Specifications Verified
P Procurement Specialist from Canada Feb 02, 2026
★★★★☆
"Standard OEM quality for Machinery and Equipment Manufacturing applications. The Pivot Bearing arrived with full certification. (Delivery took slightly longer than expected, but technical support was excellent.)"
Technical Specifications Verified
T Technical Director from United States Jan 30, 2026
★★★★★
"Great transparency on the Pivot Bearing components. Essential for our Machinery and Equipment Manufacturing supply chain."
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 Pivot Bearing from India (57m ago).

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Frequently Asked Questions

What materials are available for pivot bearings in machinery applications?

Our pivot bearings are manufactured using high-quality bearing steel, corrosion-resistant stainless steel, or durable bronze alloy to suit various industrial environments and load requirements.

What are the key components in a pivot bearing assembly?

A complete pivot bearing includes an inner race, outer race, rolling elements, cage/retainer for element spacing, and seals/shields for contamination protection and lubrication retention.

How do pivot bearings differ from other bearing types in equipment manufacturing?

Pivot bearings are specifically designed to facilitate rotational movement around a fixed axis point, making them ideal for applications like linkages, levers, and articulated joints where precise pivot motion is required.

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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