Fixed Jaw Plate: Length 800-2500 mm, Height 500-1500 mm

Component Specifications

Definition

The Fixed Jaw Plate is a critical wear component in jaw crushers, mounted on the stationary frame opposite the moving jaw. It forms one side of the crushing chamber where raw materials like rocks, ores, and aggregates are compressed against the moving jaw plate. Its stationary position provides the reaction surface for the oscillating motion of the movable jaw, creating the compressive force needed for size reduction. The plate's geometry, tooth profile, and material composition directly influence crushing efficiency, product gradation, and wear resistance.

Working Principle

Works on the principle of compressive crushing. As the movable jaw plate oscillates toward the fixed jaw plate, material fed into the crushing chamber is trapped and compressed between the two surfaces. The fixed jaw remains stationary, providing a reaction surface that enables the generation of high compressive forces (typically 100-350 MPa) to fracture brittle materials through mechanical stress exceeding their compressive strength.

Materials

High manganese steel (Mn13, Mn18Cr2), alloy steel with chromium carbide overlay, or martensitic steel. Typical specifications: ASTM A128 Grade B-2 (11-14% Mn), DIN 1.3401, or wear-resistant steel plates like Hardox 400/500 with Brinell hardness 400-500 HB.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Height	500-1500 mm
Length	800-2500 mm
Weight	200-2000 kg
Thickness	50-200 mm
Service Life	300-2000 operating hours depending on material abrasiveness
Tooth Profile	Corrugated, smooth, or sharp teeth
Mounting Method	Bolted or wedged to crusher frame

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 21873-1, DIN 22101, ASTM A128

Parent Products

This component is used in the following industrial products

Jaw Crusher

A primary crushing machine that reduces large rocks into smaller particles using compressive force between two jaw plates.

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Engineering Analysis

Risks & Mitigation

Wear and tear from abrasive materials
Fatigue cracking from cyclic loading
Improper installation causing misalignment
Material hardening reducing impact absorption

FMEA Triads

Trigger: Abrasive material flow
Failure: Excessive wear reducing crushing efficiency
Mitigation: Use higher grade manganese steel or apply hardfacing; implement regular wear monitoring

Trigger: Cyclic compressive loading
Failure: Fatigue cracks and plate fracture
Mitigation: Proper material selection with adequate toughness; implement NDT inspection protocols

Trigger: Improper installation/tightening
Failure: Plate loosening and catastrophic failure
Mitigation: Follow manufacturer torque specifications; use locking compounds; implement installation checklists

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±1.5 mm on mounting surfaces, ±2 mm on overall dimensions

Test Method

Ultrasonic thickness testing for wear monitoring, magnetic particle inspection for crack detection, hardness testing per ASTM E10

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 Fixed Jaw Plate

1 company lists this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

Zhuzhou Chuangrui Cemented Carbide Co., Ltd.

Hunan, CN

Also makes: Spray Nozzle, Jaw Crusher, Structural Steel Welding Electrode

Listed on the company's own website · profile compiled by CNFX from public sources

Listed there as: “Movable And Fixed Jaw Plate”
View source page ↗ zzcrcarbide.com · checked 2026-08-28

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Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

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 fixed jaw plates be replaced?

Replacement intervals depend on material abrasiveness and throughput. Typically every 300-2000 operating hours. Monitor wear patterns and replace when wear exceeds 30-40% of original thickness or when crushing efficiency drops significantly.

Can fixed jaw plates be reversed for extended life?

Yes, many designs allow rotation or reversal when the bottom section wears faster than the top. This doubles service life by utilizing both ends of the wear surface before replacement.

What causes premature wear on fixed jaw plates?

Common causes include improper material feed (oversize or tramp metal), incorrect plate material for the application, excessive crushing force, poor alignment with moving jaw, and abrasive materials without proper material selection.

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.

Fixed Jaw Plate