S2M节距：2mm　　　　型号齿数节线长型号齿数节线长60-S2M3060310-S2M15531066-S2M3366314-S2M15731480-S2M4080322-S2M16132288-S2M4488324-S2M16232496-S2M4896334-S2M16733498-S2M4998340-S2M170340100-S2M50100380-S2M190380102-S2M51102388-S2M194388112-S2M56112400-S2M200400118-S2M59118436-S2M218436120-S2M60120440-S2M220440130-S2M65130444-S2M222444140-S2M70140460-S2M230460146-S2M73146480-S2M240480150-S2M75150492-S2M246492152-S2M76152494-S2M247494156-S2M78156530-S2M265530160-S2M80160556-S2M278556162-S2M81162560-S2M280560164-S2M82164584-S2M292584172-S2M86172750-S2M325750176-S2M88176760-S2M330760180-S2M90180800-S2M400800182-S2M91182960-S2M480960186-S2M93186984-S2M492984192-S2M961921224-S2M6121224194-S2M971943000-S2M15003000200-S2M1002003672-S2M18363672212-S2M106212214-S2M107214240-S2M120240244-S2M122244260-S2M130260264-S2M132264266-S2M133266274-S2M137274284-S2M142284288-S2M144288302-S2M151302308-S2M154308