flywheel ring gears for Truck & Bus & Car

ring gear 1. Material:C45/SAE1045 2. Progress:forging---normalizing---expand---turning---gearcutting---chamfering---cleaning-carryandinspection---quenching---tempering---rustproof---completed. 3. Features: 1) Raw material:C45 and any raw material you requested 2) Produced according to your drawing or sample. 3) Quotation: If you could tell us the inner and outside diameter, height and the teeth number, material,port ,then we could give you the price for your reference. 4) Series:FAW,DIESEL,IVECO,STEYR, KAMAZ, TATRA, NISSAN, ISUZU, MAZDA, LADA, AUDI,FORD and so on... 5) OEM:a drawing or sample 4. Astarterringgear,sometimescalledastarterringorringgear,isamediumcarbonsteelringwithteeththatisfittedontheperipheryofaflexplateorflywheelofaninternalcombustionengine,mostlyforautomotiveapplications. Theteethofthestarterringaredrivenbythesmallergear(thepinion)ofthestartermotor.Theprimaryfunctionofthestarterringistotransfertorquefromthestartermotorpiniontotheflywheelorflexplatetorotatetheenginetobeginthecycle. Thestarterringgearismostcommonlymadebyformingalengthofsquareorrectangularsteelbarintoacircleandweldingtheendstogether.Therethenfollowvariousheat-treatmentlikenormalisingandtemperingandmachiningoperations,includingthemachiningoftheteethandfinallyaheat-treatmentoperation.Theteethofthestarterringneedtobehardenedinordertoincreasetheirstrengthandresistwear.Thenormalhardnessatpitchcirclediameteris45-55HRC.Thehardnessattherootoftheteethisabout40HRCandat2mmbelowrootthehardnessis35Hrcmax.Thebodyoftheringisgenerallyleftuntreated. Engineswithmanualtransmissionusuallyhaveaheavyflywheel,typically5to10kgofcastiron,withthestarterringgearshrunkontotheoutside.Thisisdonebyheatingtheringtoaround200°Ctoexpandtheringwhichisthenplacedontotheflywheel,holdtheringgearwithhydraulicpressureof5kg/cm2for1minandallowedtocooltheringgear.Thestarterringistherebyfirmlyattachedtotheflywheel.