Pivot Bearing: Inner Diameter 10-50 mm, Outer Diameter 30-90 mm

Component Specifications

Definition

A specialized pivot bearing designed for dancer arm assemblies in tension sensor systems, providing smooth rotational movement with minimal friction while maintaining precise angular positioning under variable loads. This component enables accurate tension measurement and control by allowing the dancer arm to pivot freely in response to material tension changes.

Working Principle

Utilizes rolling elements (balls or rollers) between inner and outer races to reduce friction during rotational movement. The bearing supports radial and axial loads while maintaining precise alignment, allowing the dancer arm to pivot smoothly in response to tension variations in the material being processed.

Materials

Bearing steel (AISI 52100/SUJ2), stainless steel (AISI 440C) for corrosive environments, ceramic balls (Si3N4) for high-speed applications, PTFE or nylon retainers

Technical Parameters

Parameter	Typical range	Notes & selection driver
Width	10-30 mm
Clearance	C3 to C5
Speed Rating	Up to 10,000 rpm
Load Capacity	Dynamic: 5-50 kN, Static: 10-100 kN
Inner Diameter	10-50 mm
Outer Diameter	30-90 mm
Precision Grade	ABEC 3 to ABEC 7
Operating Temperature	-30°C to +120°C

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

ISO 15, ISO 355, DIN 625-1, DIN 628-1

Parent Products

This component is used in the following industrial products

Dancer Arm / Tension Sensor

A mechanical-electrical component that measures and regulates wire tension in continuous processing systems.

View Product Details

Dancer Arm or Tension Sensor

A mechanical-electrical component that measures and regulates material tension in decoiling/uncoiling systems.

View Product Details

Engineering Analysis

Risks & Mitigation

Bearing seizure due to inadequate lubrication
Premature wear from misalignment
Contamination ingress leading to failure
Fatigue failure under cyclic loading

FMEA Triads

Trigger: Inadequate lubrication or contamination
Failure: Increased friction, overheating, and eventual bearing seizure
Mitigation: Implement regular lubrication schedules, use proper seals, and maintain clean operating environments

Trigger: Misalignment during installation
Failure: Uneven load distribution leading to premature wear and reduced bearing life
Mitigation: Use precision alignment tools during installation and verify alignment periodically

Trigger: Excessive load or shock loading
Failure: Brinelling or fatigue failure of bearing components
Mitigation: Proper sizing for application loads, use of shock-absorbing mounts, and load monitoring systems

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Radial runout: ≤0.005 mm, Axial runout: ≤0.003 mm, Bore tolerance: h6, Outer diameter tolerance: g6

Test Method

ISO 15242-1 for vibration testing, ISO 281 for load rating verification, dimensional inspection per ISO 1132-2

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

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CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Pivot Bearing

Manufacturer profiles associated with Pivot Bearing.

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Frequently Asked Questions

What is the primary function of a pivot bearing in a dancer arm system?

The pivot bearing enables smooth rotational movement of the dancer arm while maintaining precise positioning, allowing accurate tension measurement and control in material processing systems.

How often should pivot bearings be maintained in industrial applications?

Maintenance intervals depend on operating conditions, but typically range from 3-12 months for lubrication and 1-3 years for replacement, with more frequent checks in high-load or high-speed applications.

What materials are best for pivot bearings in corrosive environments?

Stainless steel (AISI 440C) bearings with appropriate seals or ceramic bearings provide excellent corrosion resistance in harsh environments.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

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.

Pivot Bearing