Arm Segments / Links: Payload Capacity 5-500 kg, Weight 1-50 kg

Component Specifications

Definition

Arm segments or links are rigid structural components in robotic arm assemblies that connect adjacent joints, forming the kinematic chain. They provide the necessary reach, maintain precise positioning between joints, and support payloads while transmitting forces and moments. These components determine the robot's workspace geometry and are critical for maintaining structural integrity under dynamic loads.

Working Principle

Arm segments function as rigid bodies in serial kinematic chains, maintaining fixed distances between joint axes. They transfer motion from actuators through joints while providing leverage and structural support. The length and geometry of links directly influence the robot's reach, dexterity, and moment-carrying capacity according to kinematic and dynamic principles.

Materials

Typically aluminum alloys (6061-T6, 7075-T6) for lightweight strength, carbon steel for heavy-duty applications, or carbon fiber composites for high stiffness-to-weight ratios. Surface treatments include anodizing, powder coating, or plating for corrosion resistance.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Length	200-2000 mm
Weight	1-50 kg
Stiffness	>5000 N/mm
Payload Capacity	5-500 kg
Natural Frequency	>30 Hz
Positioning Accuracy	±0.05-0.5 mm

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 9283, ISO 10218-1, DIN EN ISO 8373

Parent Products

This component is used in the following industrial products

Robotic Arm Assembly

A multi-jointed mechanical assembly that provides precise positioning and movement for handling beverage containers in depalletizing operations.

View Product Details

Multi-axis Positioning Arm

A robotic arm component with multiple degrees of freedom that precisely positions adhesive application tools within a manufacturing system.

View Product Details

Engineering Analysis

Risks & Mitigation

Structural fatigue failure
Excessive deflection under load
Resonance at operational frequencies
Corrosion in harsh environments
Thermal expansion affecting accuracy

FMEA Triads

Trigger: Cyclic loading exceeding fatigue limits
Failure: Crack propagation leading to catastrophic fracture
Mitigation: Regular inspection, finite element analysis during design, proper material selection with adequate safety factors

Trigger: Inadequate stiffness for dynamic operations
Failure: Excessive vibration and positioning errors
Mitigation: Stiffness optimization through cross-section design, material selection, and damping integration

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±0.1 mm for critical dimensions, ±0.5° for angular relationships

Test Method

Coordinate measuring machine (CMM) verification, laser tracker measurement, dynamic stiffness testing, fatigue testing per ISO 12100

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

Check the legal entity, factory address, ownership, certifications, and direct contacts.

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Manufacturers of Arm Segments / Links

Manufacturer profiles associated with Arm Segments / Links.

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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 factors determine the optimal length of robotic arm links?

Link length is optimized based on workspace requirements, payload capacity, stiffness needs, and dynamic performance. Longer links increase reach but reduce stiffness and natural frequency, requiring careful trade-off analysis.

How do arm segments affect robotic accuracy?

Arm segments directly impact accuracy through their stiffness, thermal stability, and manufacturing precision. Deflection under load, thermal expansion, and dimensional tolerances all contribute to positioning errors that must be compensated in control systems.

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.

Arm Segments / Links