Cutting Teeth: Weight Range 2-8 kg per tooth

Component Specifications

Definition

Cutting teeth are replaceable wear components mounted on the jaws of diaphragm wall grabs, designed to penetrate and break up soil, rock, and other geological materials during excavation. These teeth feature specialized geometries and hardened surfaces to maximize cutting efficiency while withstanding extreme abrasive and impact forces in foundation construction applications.

Working Principle

Cutting teeth operate on mechanical penetration and shearing principles. When the grab jaws close, the teeth concentrate force on small contact areas to fracture materials through compressive stress. Their wedge-shaped profiles create lateral displacement of soil/rock particles, while hardened surfaces resist wear from abrasion during repeated excavation cycles.

Materials

High-carbon alloy steel (typically 40CrMnMo or similar) with surface hardening to 55-60 HRC, often with tungsten carbide inserts or wear-resistant coatings on critical edges

Technical Parameters

Parameter	Typical range	Notes & selection driver
Hardness	55-60 HRC surface
Service Life	150-400 operating hours depending on soil conditions
Weight Range	2-8 kg per tooth
Mounting Type	Bolt-on or weld-on
Tooth Profile	Chisel, conical, or tiger

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

Standards

DIN EN 10025

Parent Products

This component is used in the following industrial products

Diaphragm Wall Grab

A specialized excavation tool used for constructing diaphragm walls in geotechnical engineering.

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Engineering Analysis

Risks & Mitigation

Premature wear in abrasive soils
Tooth breakage from impact with obstructions
Improper mounting causing detachment during operation

FMEA Triads

Trigger: Excessive wear in highly abrasive soil conditions
Failure: Reduced excavation efficiency and increased energy consumption
Mitigation: Use teeth with tungsten carbide inserts and implement regular wear inspection protocols

Trigger: Impact with buried obstructions (boulders, concrete)
Failure: Tooth fracture or complete breakage
Mitigation: Implement ground penetration radar surveys and use impact-resistant tooth designs

Trigger: Improper mounting torque or worn mounting hardware
Failure: Tooth detachment during operation
Mitigation: Follow manufacturer torque specifications and replace mounting hardware with each tooth change

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±0.5mm on critical mounting dimensions, ±1° on cutting edge angles

Test Method

Hardness testing per ASTM E18, impact testing per ISO 148-1, wear testing using ASTM G65 procedure

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 Cutting Teeth

Manufacturer profiles associated with Cutting Teeth.

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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

How often should cutting teeth be replaced on diaphragm wall grabs?

Replacement frequency depends on soil conditions, typically every 150-400 operating hours. Monitor for wear exceeding 30% of original length or visible cracking.

Can cutting teeth be re-sharpened or repaired?

Limited re-sharpening is possible for some designs, but replacement is generally recommended as heat treatment properties degrade with repair attempts.

What tooth profile works best for rocky soil conditions?

Conical or tiger tooth profiles provide better penetration in rocky conditions, while chisel profiles excel in cohesive soils.

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.

Cutting Teeth