Gear Wheel

Meshes with the pinion and transfers drive torque to the eccentric assembly.

Gear Wheel (Gear)— Gyratory Crusher Wear part, position 08.

Installation and Function

Installation PositionAround the eccentric assembly, corresponding to location 08 in the FLS cutaway diagram marked on this site.
Main FunctionMeshes with the pinion and transfers drive torque to the eccentric assembly.
Replacement FrequencyLow replacement frequency; assess the gear pair for pitting, spalling, scuffing, cracks, abnormal wear or an uneven contact pattern.

Materials and Mechanical Properties

ItemDetails
Material OptionsQuenched and tempered 42CrMo/50CrMo4 alloy steel or carburising steel such as 18CrNiMo7-6, according to the OEM gear pair design
Typical Properties and Acceptance CriteriaMaterial and heat treatment must be matched to the pinion. Quenched and tempered designs commonly balance tooth and core properties at around 280–360 HB; carburised designs may use a tooth surface around 58–62 HRC with a tough core. These specifications are not interchangeable between heat treatment routes. Verify material, forging grain flow, UT/MT, tooth profile and lead, runout, hardened case, contact pattern and backlash.
Principal Failure MechanismImpact, cutting and abrasive wear; gear tooth or pin-and-bushing wear, pitting, scuffing, uneven loading and fatigue

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.

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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