INDUSTRY COMPONENT

Jaw Plates

Jaw plates are replaceable wear components in primary crushers that crush rocks and ores through compressive force.

Component Specifications

Definition
Jaw plates are critical wear components installed on the fixed and movable jaws of primary jaw crushers. They form the crushing chamber where raw materials like rocks, ores, and aggregates are fractured through mechanical compression. These plates are designed with corrugated or smooth surfaces to optimize crushing efficiency and particle size reduction. Their geometry, material composition, and tooth profile directly influence crusher capacity, product gradation, and operational costs in mining, quarrying, and aggregate production.
Working Principle
Jaw plates operate on the principle of compressive crushing. The movable jaw plate moves cyclically toward the fixed jaw plate, creating a narrowing gap. Material fed into the chamber is crushed by the mechanical pressure exerted between the two plates. The corrugated or tooth patterns on the plate surfaces enhance grip and fracturing efficiency, breaking larger particles into smaller, uniform sizes through repeated compression cycles.
Materials
High manganese steel (Mn14, Mn18, Mn22), alloy steel with chromium (Cr) and molybdenum (Mo) additives, or composite materials with ceramic inserts for abrasion resistance. Heat treatment processes like quenching and tempering are applied to achieve optimal hardness (200-400 HB) and toughness.
Technical Parameters
  • Weight 500-5000 kg per plate
  • Hardness 200-400 HB
  • Thickness 50-200 mm
  • Service Life 100,000-1,000,000 tons depending on material and application
  • Tooth Profile Corrugated, smooth, or specialized patterns
Standards
ISO 21873, DIN 22101

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Jaw Plates.

Parent Products

This component is used in the following industrial products

Engineering Analysis

Risks & Mitigation
  • Premature wear due to abrasive materials
  • Fatigue failure from cyclic loading
  • Improper installation causing misalignment
  • Material hardening leading to brittle fracture
FMEA Triads
Trigger: Abrasive feed material like granite or basalt
Failure: Excessive wear reducing plate thickness and crushing efficiency
Mitigation: Use high-chromium alloy plates, optimize feed size, and implement regular wear monitoring
Trigger: Overloading or tramp metal in feed
Failure: Cracking or catastrophic plate breakage
Mitigation: Install metal detectors, use overload protection systems, and ensure proper crusher settings

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
Dimensional tolerance ±2 mm for plate thickness and bolt hole alignment; surface flatness within 1.5 mm/m
Test Method
Ultrasonic testing for internal defects, hardness testing per ASTM E10, wear resistance testing via ASTM G65 abrasion test

Buyer Feedback

★★★★☆ 4.6 / 5.0 (25 reviews)

"The Jaw Plates we sourced perfectly fits our Machinery and Equipment Manufacturing production line requirements."

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"The technical documentation for this Jaw Plates is very thorough, especially regarding technical reliability."

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Frequently Asked Questions

How often should jaw plates be replaced?

Replacement frequency depends on material hardness, crusher settings, and feed material abrasiveness. Typically, plates last from several weeks to months, with monitoring through regular inspections for wear patterns and thickness reduction.

What are the signs of worn jaw plates?

Signs include decreased crushing efficiency, increased power consumption, uneven product size, visible cracks or deformation, and excessive wear on plate teeth or surfaces.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Get Quote for Jaw Plates

Jaw Inserts Jaw Set