Impact Plates/Anvils: Thickness 50-150 mm, Weight 100-2000 kg

Component Specifications

Definition

Impact plates and anvils are critical wear components in horizontal shaft impact crushers and vertical shaft impact crushers. Positioned within the crushing chamber, these plates serve as stationary or adjustable surfaces that receive material accelerated by the rotor. When feed material strikes these plates at high velocity, kinetic energy converts to fracture energy, causing the material to break along natural cleavage planes. The geometry, positioning, and material composition of these plates determine crushing efficiency, product gradation, and wear life. Modern designs often incorporate replaceable segments or reversible configurations to maximize service life and maintain consistent crushing performance.

Working Principle

Impact crushing operates on the principle of accelerated material impacting stationary or semi-stationary surfaces. The rotor assembly accelerates feed material to high velocities (typically 40-80 m/s). This material then strikes the impact plates/anvils, where kinetic energy converts to fracture energy through brittle failure mechanisms. The angle of impact, velocity, and material properties determine breakage patterns. Secondary impacts occur as fragments rebound between plates and rotor, creating additional size reduction through inter-particle collision and further plate impacts.

Materials

High-chromium white iron (27-30% Cr), Martensitic steel with ceramic inserts, Manganese steel (11-14% Mn), Bimetal composites (steel base with hardfacing), Tungsten carbide reinforced alloys. Hardness typically ranges from 55-65 HRC for wear surfaces with adequate fracture toughness.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Weight	100-2000 kg
Hardness	550-650 HB
Thickness	50-150 mm
Impact Angle	45-90 degrees
Service Life	200-2000 operating hours
Mounting Type	Bolted, Wedge-locked, or Modular cartridge

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 21873, DIN 22101, ASTM A532

Parent Products

This component is used in the following industrial products

Impact Crusher

A crushing machine that uses impact force to reduce the size of materials by striking them with hammers or blow bars mounted on a rotating rotor.

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Engineering Analysis

Risks & Mitigation

Catastrophic failure from fatigue cracking
Reduced crushing efficiency from excessive wear
Unbalanced operation from uneven wear patterns
Material contamination from plate degradation
Increased downtime from unexpected failures

FMEA Triads

Trigger: Fatigue stress concentration at bolt holes or edges
Failure: Crack propagation leading to plate fracture
Mitigation: Implement radiused edges, proper torque sequencing, regular NDT inspections, and use of fatigue-resistant alloys

Trigger: Abrasive wear from high-silica content materials
Failure: Excessive thickness reduction altering crushing dynamics
Mitigation: Select appropriate material grade (higher chromium content), implement wear monitoring systems, optimize feed material blending

Trigger: Impact overload from tramp metal or oversize feed
Failure: Localized spalling or plastic deformation
Mitigation: Install metal detectors, maintain proper feed size control, use impact-absorbing mounting systems

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±2 mm on critical dimensions, ±0.5° on mounting angles

Test Method

Ultrasonic thickness testing, Brinell hardness testing, Dye penetrant inspection, Dimensional verification against CAD models

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 Impact Plates/Anvils

Manufacturer profiles associated with Impact Plates/Anvils.

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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 impact plates and anvils?

Impact plates typically refer to larger stationary or adjustable wear surfaces in horizontal shaft impactors, while anvils often describe the circumferential wear rings in vertical shaft impactors. Both serve similar functions but differ in geometry and mounting configuration.

How often should impact plates be replaced?

Replacement intervals vary from 200 to 2000 hours depending on material abrasiveness, feed size, rotor speed, and plate material. Regular thickness measurements (every 50-100 hours) help predict remaining life and schedule replacements during planned maintenance.

Can impact plates be repaired or reconditioned?

Yes, plates with sufficient base material can be rebuilt using hardfacing alloys or weld overlay techniques. However, economic feasibility depends on remaining base thickness, repair costs versus new part costs, and required performance characteristics.

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.

Impact Plates/Anvils