Fixed Jaw Plates

Provides the stationary crushing face and withstands compression, sliding and abrasive wear.

Fixed Jaw Plates

Fixed Jaw Plates (Fixed Jaw Plate)— Jaw Crushers Wear part, position 01.

Installation and Function

Installation PositionFixed to the frame, position 5 in the layout; forms the V-shaped crushing chamber together with the moving jaw plate.
Main FunctionProvides the stationary crushing face and withstands compression, sliding and abrasive wear.
Replacement FrequencyHigh replacement frequency; normally inspected alongside the moving jaw plate by comparing wear profiles, and turned or reversed as specified by the OEM.

Materials and Mechanical Properties

ItemDetails
Material OptionsAustenitic high-manganese cast steel, such as Mn13Cr2, Mn18Cr2 or Mn22Cr2, selected for the OEM chamber profile and feed material
Typical Properties and Acceptance CriteriaThe solution-treated condition should provide an austenitic structure, toughness and the ability to work-harden in service. Acceptance checks focus on chemical composition, grain-boundary carbides, casting defects, tooth profile, mounting faces and flatness. Delivery hardness alone does not predict service life. Retain sufficient toughness for high-impact duty; higher-manganese grades or OEM-approved composite options may be considered for low-impact, highly abrasive duty.
Principal Failure MechanismSliding or three-body abrasion, localized impact and cracking around fastener holes

Material and Design Considerations

  • Identify material hardness, particle size, abrasiveness, moisture, temperature, pH, impact and tramp material;
  • High hardness does not replace core toughness, fatigue strength, corrosion resistance or high-temperature performance;
  • For composite, hardfaced, ceramic and elastomer designs, assess substrate bonding, edge protection, fastening and maintainability;
  • For parts that mate with shafts, gears, seals, roll surfaces or housings, control fits, tolerances, surface finish and assembly clearances together;
  • Assess material upgrades using cumulative throughput, dimensional wear, failure modes, product quality and downtime costs.

Required Ordering / RFQ Information

  • Equipment manufacturer, machine model, serial number, part number and latest drawing revision;
  • Part dimensions, unit weight, key tolerances, assembly and fastening method;
  • Current material, chemical composition, heat treatment, hardness and mechanical property reports;
  • Processed material, maximum particle size, hardness/abrasiveness, moisture and tramp material records;
  • Speed, load, temperature, pressure, process medium chemistry and continuous operating time;
  • Failure photographs, wear measurements, crack/fracture locations and current service life;
Materials and values are for preliminary engineering selection. Final chemical composition, heat treatment, hardness and dimensional tolerances must follow the OEM drawings and technical agreement.
Related Equipment and Materials

Equipment, Materials and OEM Identification

Use these links for preliminary selection. Confirm the complete model, serial or drawing number, drawing revision, dimensions and actual operating conditions to establish fit.

Equipment

Material Options for This Part

Independent aftermarket information. OEM names and trademarks belong to their respective owners and do not imply authorization, affiliation or endorsement. Confirm the series, complete model, serial or drawing number, drawings and operating conditions before manufacture.

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