Pivot Arbor: Load Capacity 500-5000 N, Length Range 50-500 mm

Component Specifications

Definition

The Pivot Arbor is a critical rotating shaft component within actuator arm assemblies, designed to provide a stable and precise axis of rotation. It facilitates controlled angular displacement through bearing surfaces, ensuring accurate positioning and smooth movement in mechanical systems. This component typically features machined journals, keyways, or splines for secure attachment and torque transmission.

Working Principle

The Pivot Arbor operates as a fixed or rotating axis that allows the actuator arm to pivot around it. It transfers rotational forces while maintaining alignment through precision bearings or bushings. The arbor's geometry and surface finish minimize friction and wear, enabling smooth angular motion with minimal backlash.

Materials

Typically manufactured from alloy steels (AISI 4140, 4340) or stainless steels (304, 316) for corrosion resistance. High-precision applications may use case-hardened steels or ceramic-coated surfaces. Material selection depends on load capacity, environmental conditions, and required surface hardness (typically 45-60 HRC).

Technical Parameters

Parameter	Typical range	Notes & selection driver
Hardness	45-60 HRC
Tolerance	±0.01 mm
Maximum RPM	100-1000
Length Range	50-500 mm
Load Capacity	500-5000 N
Diameter Range	10-100 mm
Surface Finish	Ra 0.4-1.6 μm

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 286, DIN 748, ISO 1101

Parent Products

This component is used in the following industrial products

Actuator Arm

A mechanical lever component within an escapement mechanism that transfers energy from the power source to regulate the release of the escape wheel.

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Engineering Analysis

Risks & Mitigation

Wear and fatigue failure
Misalignment causing binding
Corrosion in harsh environments
Bearing surface degradation
Torque overload damage

FMEA Triads

Trigger: Insufficient lubrication
Failure: Increased friction and wear leading to seizing
Mitigation: Implement scheduled lubrication protocols and use appropriate lubricants

Trigger: Misalignment during installation
Failure: Premature bearing wear and vibration
Mitigation: Use precision alignment tools and follow installation procedures

Trigger: Material fatigue under cyclic loading
Failure: Crack propagation and catastrophic failure
Mitigation: Regular inspection and replacement based on load cycles

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Geometric tolerances per ISO 1101, dimensional tolerances per ISO 286

Test Method

Coordinate measuring machine (CMM) verification, surface roughness testing, hardness testing, dynamic load testing

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 Arbor

Manufacturer profiles associated with Pivot Arbor.

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review

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Frequently Asked Questions

What is the primary function of a Pivot Arbor?

The Pivot Arbor serves as the rotational axis for actuator arms, enabling controlled angular movement while maintaining structural integrity and precise alignment in mechanical systems.

How do I select the right Pivot Arbor material?

Material selection depends on load requirements, environmental conditions (corrosion, temperature), and wear resistance needs. Alloy steels offer strength, stainless steels provide corrosion resistance, and hardened surfaces enhance durability.

What maintenance does a Pivot Arbor require?

Regular lubrication of bearing surfaces, inspection for wear or scoring, and checking alignment and torque specifications. Replacement is typically needed when tolerances exceed ±0.05 mm or surface damage occurs.

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 Arbor