Liner Backing Compound

Fills gaps, distributes loads evenly and prevents local loss of liner support.

Liner Backing Compound (Backing Compound)— Gyratory Crusher Wear part, position 23.

Installation and Function

Installation PositionBetween the concave/mantle liners and their supporting bodies, corresponding to location 23 in the FLS cutaway diagram marked on this site.
Main FunctionFills gaps, distributes loads evenly and prevents local loss of liner support.
Replacement FrequencyReplaced whenever the associated liner is changed; an installation consumable.

Materials and Mechanical Properties

ItemDetails
Material OptionsTwo-part, 100% solids resilient epoxy composite for gyratory and cone crusher backing
Typical Properties and Acceptance CriteriaRequires low volumetric shrinkage, compressive load capacity, impact absorption, adhesion to steel and iron, and controlled exothermic curing. For example, the manufacturer gives a typical dry service range of approximately -28°C to 104°C for LOCTITE PC 9465. Final selection also requires checks of working time, curing temperature, pour thickness, removal procedures and safety data.
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.

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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Match requirements with suitable manufacturers in China and coordinate the exchange of technical information.

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