So　far,　researches　of　the　meshing　performance　of　vehicles　cylindrical　gears　are　quite　rare.　Testers　that　can　be　used　to　test　the　gear　pair＇s　performance　for　vehicles　cylindrical　gears　do　not　exist.　A　tester　that　can　be　used　to　test　vehicles　cylindrical　gears　paring　performance　was　developed,　which　fills　the　gaps　of　vehicles　cylindrical　gears　meshing　performance　tester.　The　maximum　diameter　of　gears　measured　is　500mm,　the　maximum　spindle　speed　is　3000r/min　and　the　maximum　load　torque　is　200N.m.　The　tester　can　inspect　and　measure　the　following　items　simultaneously,　such　as　the　transmission　errors,　the　vibration　and　noise,　the　contact　pattern,　the　eccentricity　errors　and　so　on.　There　is　gear　error　analysis　function　in　this　tester.　In　addition,　it　can　meet　the　quality　inspection　requirements　for　the　vehicles　cylindrical　gears　with　the　accuracy　of　grade　5.