Claw Fingers/Jaws: Stroke Length 10-100 mm

Component Specifications

Definition

Claw fingers, also known as jaws, are the terminal elements of a mechanical claw or gripper assembly designed to securely grasp, hold, and release objects. They are engineered to provide precise force application, surface contact, and object compatibility for automated material handling, assembly, and manipulation tasks in industrial settings. These components are critical for ensuring reliable operation in robotic systems, conveyor transfers, and automated machinery.

Working Principle

Claw fingers operate by applying controlled mechanical force through actuation (pneumatic, hydraulic, or electric) to close around an object, creating friction or form-fit contact. The gripping force is distributed across the contact surfaces to prevent slippage or damage. Release occurs when the actuation force is reversed or neutralized, allowing the fingers to open. Advanced designs may incorporate sensors for force feedback, adaptive surfaces, or multi-point contact for irregular shapes.

Materials

Common materials include hardened alloy steel (e.g., AISI 4140) for durability, aluminum alloys (e.g., 6061-T6) for lightweight applications, polyurethane or rubber for non-marring surfaces, and engineering plastics like PEEK for chemical resistance. Coatings such as titanium nitride or chrome plating may be applied to reduce wear.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Weight	0.1-2 kg per finger
Repeatability	±0.05 mm
Stroke Length	10-100 mm
Gripping Force	50-500 N
Mounting Interface	ISO 9409-1-50-4-M6
Operating Temperature	-20°C to 80°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 9409-1, DIN 332

Parent Products

This component is used in the following industrial products

Mechanical Claw Assembly

A mechanical gripping mechanism consisting of multiple articulated fingers or jaws designed to grasp, hold, and manipulate objects.

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Engineering Analysis

Risks & Mitigation

Wear and tear from repeated use
Misalignment causing poor grip
Material fatigue under high loads
Contamination affecting performance
Incompatibility with object surfaces

FMEA Triads

Trigger: Excessive cyclic loading
Failure: Finger fracture or permanent deformation
Mitigation: Use fatigue-resistant materials, implement regular inspection schedules, and design with safety factors exceeding operational loads.

Trigger: Improper alignment during installation
Failure: Uneven gripping force or object slippage
Mitigation: Follow precise mounting procedures, use alignment tools, and verify parallelism during setup.

Trigger: Exposure to corrosive environments
Failure: Surface degradation and reduced friction
Mitigation: Apply protective coatings, select corrosion-resistant materials (e.g., stainless steel), and implement environmental controls.

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Dimensional tolerances per ISO 2768-m, surface finish Ra ≤ 1.6 μm for critical contact areas

Test Method

Grip force testing via load cells, cycle testing to 1 million operations, and environmental exposure tests per ISO 9227 for corrosion resistance.

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.

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

Manufacturers of Claw Fingers/Jaws

Manufacturer profiles associated with Claw Fingers/Jaws.

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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 are the key factors in selecting claw finger materials?

Material selection depends on application requirements: use hardened steel for high wear resistance, aluminum for lightweight needs, and polymers like polyurethane to prevent damage to delicate objects. Consider factors like load capacity, environmental conditions (e.g., temperature, chemicals), and required surface friction.

How do claw fingers ensure secure gripping without damaging objects?

Secure gripping is achieved through precise force control, adaptive finger designs (e.g., compliant surfaces or multi-finger configurations), and surface materials that provide adequate friction while being non-abrasive. Sensors can monitor grip force to prevent over-tightening.

Can claw fingers be customized for specific objects?

Yes, claw fingers are often custom-designed to match object geometry, weight, and surface properties. Modifications include shape profiling, material selection, and integration of features like vacuum pads or sensors for irregular or fragile items.

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.

Claw Fingers/Jaws