Cutting Teeth/Bits: Cutting Width 50-200 mm, Weight 2-25 kg

Component Specifications

Definition

Cutting teeth and bits are engineered components mounted on the cutting edges of digging equipment such as excavator buckets, trenchers, and mining machinery. They serve as the primary interface for penetrating and fragmenting soil, rock, or other materials through mechanical force. These components are designed to withstand extreme abrasion, impact loads, and cyclic stresses while maintaining cutting efficiency. Their geometry, material composition, and mounting systems are optimized for specific applications ranging from soft soil excavation to hard rock mining.

Working Principle

Cutting teeth/bits operate on mechanical fragmentation principles. When the digging assembly engages with material, force is concentrated at the tooth tip, creating high-pressure zones that exceed the material's compressive or shear strength. This causes localized failure through cracking, chipping, or plastic deformation. The tooth geometry directs forces efficiently while minimizing energy consumption. Some designs incorporate self-sharpening features through controlled wear patterns or multi-material construction.

Materials

High-alloy steel (typically 400-500 HB hardness), tungsten carbide inserts (1400-1600 HV), boron steel, martensitic steels with chromium and molybdenum alloys. Surface treatments include hardfacing with chromium carbide or tungsten carbide composites.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Weight	2-25 kg
Hardness	400-500 HB (steel), 1400-1600 HV (carbide)
Shank Type	Pin-on, wedge lock, or threaded
Service Life	200-800 operating hours depending on material
Cutting Width	50-200 mm
Mounting Torque	300-800 Nm for threaded systems

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 22261, ISO 13333

Parent Products

This component is used in the following industrial products

Digging Assembly

The core digging mechanism of a trencher that excavates soil and creates trenches.

View Product Details

Hammer/Drill Head

The impact or drilling component of a piling rig that directly contacts and penetrates the ground.

View Product Details

Engineering Analysis

Risks & Mitigation

Premature wear from abrasive materials
Tooth loss due to improper mounting
Fatigue failure from cyclic loading
Reduced efficiency from worn geometry

FMEA Triads

Trigger: Insufficient hardness for application material
Failure: Rapid wear and reduced service life
Mitigation: Material testing and proper grade selection based on abrasiveness index

Trigger: Improper mounting torque or pin wear
Failure: Tooth detachment during operation
Mitigation: Regular torque checks and pin replacement schedules

Trigger: Impact loading beyond design limits
Failure: Fracture or catastrophic failure
Mitigation: Operational training and load monitoring systems

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±0.5 mm on critical dimensions, ±1° on angle specifications

Test Method

ASTM G65 for abrasion resistance, ISO 148-1 for impact testing, dimensional verification per ISO 2768-m

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/Bits

Manufacturer profiles associated with Cutting Teeth/Bits.

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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 difference between cutting teeth and cutting bits?

Cutting teeth typically refer to larger, individually mounted components on excavator buckets, while bits are smaller, often used in arrays on trenchers or road milling machines. Both serve similar fragmentation functions but differ in scale and mounting systems.

How often should cutting teeth be replaced?

Replacement intervals depend on material hardness, operating conditions, and tooth design. Typically, teeth in abrasive environments require replacement every 200-400 hours, while less demanding applications may extend to 800 hours. Regular inspection for wear beyond 30% of original length is recommended.

Can cutting teeth be reconditioned or rebuilt?

Yes, many cutting teeth can be rebuilt through hardfacing processes that apply wear-resistant alloys to worn surfaces. This is cost-effective when the base structure remains intact, typically extending service life by 60-80% of original.

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/Bits