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  <xs:element id="ait_IndustrialMachineryMember" abstract="true" name="IndustrialMachineryMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ait_MetalsMember" abstract="true" name="MetalsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ait_FoodMember" abstract="true" name="FoodMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ait_ForestProductsMember" abstract="true" name="ForestProductsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ait_ChemPetrochemMember" abstract="true" name="ChemPetrochemMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ait_CementAggregateMember" abstract="true" name="CementAggregateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ait_OilGasMember" abstract="true" name="OilGasMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ait_TransportationMember" abstract="true" name="TransportationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ait_DisaggregatedRevenueByCustomerIndustryPercent" abstract="false" name="DisaggregatedRevenueByCustomerIndustryPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="ait_PowerTransmissionMember" abstract="true" name="PowerTransmissionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ait_GeneralMaintenanceHoseProductsOtherMember" abstract="true" name="GeneralMaintenanceHoseProductsOtherMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ait_FluidPowerMember" abstract="true" name="FluidPowerMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ait_BearingsLinearSealsMember" abstract="true" name="BearingsLinearSealsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ait_SpecialtyFlowControlMember" abstract="true" name="SpecialtyFlowControlMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ait_DisaggregatedRevenueByProductLinePercent" abstract="false" name="DisaggregatedRevenueByProductLinePercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="ait_ContractWithCustomerAssetPeriodIncreaseDecrease" abstract="false" name="ContractWithCustomerAssetPeriodIncreaseDecrease" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="ait_ContractWithCustomerLiabilityPeriodIncreaseDecrease" abstract="false" name="ContractWithCustomerLiabilityPeriodIncreaseDecrease" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="ait_ThompsonIndustrialSupplyMember" abstract="true" name="ThompsonIndustrialSupplyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ait_BusinessCombinationRecognizedAssetsAcquiredNetTangibleAssets" abstract="false" name="BusinessCombinationRecognizedAssetsAcquiredNetTangibleAssets" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ait_BusinessCombinationContingentConsiderationInterestRate" abstract="false" name="BusinessCombinationContingentConsiderationInterestRate" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="ait_SwingLineLoansMember" abstract="true" name="SwingLineLoansMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ait_VariableInterestRateBaseRatePlusMargin" abstract="false" name="VariableInterestRateBaseRatePlusMargin" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="ait_VariableInterestRateSOFRPlusMargin" abstract="false" name="VariableInterestRateSOFRPlusMargin" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="ait_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationRollForward" abstract="true" name="AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationRollForward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="ait_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPlanRollForward" abstract="true" name="AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPlanRollForward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="ait_AOCICashFlowHedgeCumulativeGainLossRollForward" abstract="true" name="AOCICashFlowHedgeCumulativeGainLossRollForward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="ait_ReportableSegmentsMember" abstract="true" name="ReportableSegmentsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ait_CorporateAndOtherExpenseNet" abstract="false" name="CorporateAndOtherExpenseNet" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ait_UnrealizedGainLossesGainsOnAssetsHeldUnderTrustForANonqualifiedDeferredCompensationPlan" abstract="false" name="UnrealizedGainLossesGainsOnAssetsHeldUnderTrustForANonqualifiedDeferredCompensationPlan" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ait_OtherNet" abstract="false" name="OtherNet" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ait_DavidK.WellsMember" abstract="true" name="DavidK.WellsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
</xs:schema>
