{"product_id":"zero-bearing-40x52x7mm-45-45-r413","title":"Zero Bearing 40x52x7Mm 45\/45 R413","description":"\u003ch2 data-end=\"38\" data-section-id=\"139nirw\" data-start=\"0\"\u003eZero Bearing 40x52x7mm 45°\/45° R413\u003c\/h2\u003e\r\n\r\n\u003ch3 data-end=\"55\" data-section-id=\"c32iwk\" data-start=\"40\"\u003eWhat Is It?\u003c\/h3\u003e\r\n\r\n\u003cp data-end=\"338\" data-start=\"56\"\u003eThe \u003cstrong data-end=\"99\" data-start=\"60\"\u003eZero Bearing R413 40x52x7mm 45°\/45°\u003c\/strong\u003e is a \u003cstrong data-end=\"157\" data-start=\"105\"\u003esealed angular-contact headset cartridge bearing\u003c\/strong\u003e used in bicycle headsets (road, MTB, gravel, and XC bikes). It sits inside the headset cup and allows the fork steerer to rotate smoothly while handling steering loads and impacts.\u003c\/p\u003e\r\n\r\n\u003cp data-end=\"535\" data-start=\"340\"\u003eThis specific size is commonly used in \u003cstrong data-end=\"428\" data-start=\"379\"\u003eintegrated or semi-integrated headset systems\u003c\/strong\u003e, especially on frames that require a \u003cstrong data-end=\"534\" data-start=\"466\"\u003e40mm inner diameter \/ 52mm outer diameter lower bearing standard\u003c\/strong\u003e.\u003c\/p\u003e\r\n\r\n\u003chr data-end=\"540\" data-start=\"537\"\u003e\r\n\u003ch3 data-end=\"558\" data-section-id=\"1iz91iu\" data-start=\"542\"\u003eKey Features\u003c\/h3\u003e\r\n\r\n\u003cul data-end=\"964\" data-start=\"559\"\u003e\r\n\t\u003cli data-end=\"619\" data-section-id=\"6f0m3m\" data-start=\"559\"\u003eSealed cartridge headset bearing (maintenance-free design)\u003c\/li\u003e\r\n\t\u003cli data-end=\"696\" data-section-id=\"d2vakk\" data-start=\"620\"\u003e45°\/45° angular contact geometry for smooth steering and load distribution\u003c\/li\u003e\r\n\t\u003cli data-end=\"750\" data-section-id=\"1h5b14a\" data-start=\"697\"\u003eFully sealed to resist water, dust, and mud ingress\u003c\/li\u003e\r\n\t\u003cli data-end=\"835\" data-section-id=\"1wp535l\" data-start=\"751\"\u003eDesigned for integrated headset systems (IS \/ ZS \/ EC variants depending on frame)\u003c\/li\u003e\r\n\t\u003cli data-end=\"872\" data-section-id=\"20st0x\" data-start=\"836\"\u003eHigh durability steel construction\u003c\/li\u003e\r\n\t\u003cli data-end=\"921\" data-section-id=\"19ea1nl\" data-start=\"873\"\u003eDirect replacement style bearing (drop-in fit)\u003c\/li\u003e\r\n\t\u003cli data-end=\"964\" data-section-id=\"y4g6po\" data-start=\"922\"\u003eSmooth low-friction steering performance\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003chr data-end=\"969\" data-start=\"966\"\u003e\r\n\u003ch3 data-end=\"989\" data-section-id=\"1yl5694\" data-start=\"971\"\u003eSpecifications\u003c\/h3\u003e\r\n\r\n\u003cul data-end=\"1394\" data-start=\"990\"\u003e\r\n\t\u003cli data-end=\"1007\" data-section-id=\"qbggmx\" data-start=\"990\"\u003e\n\u003cstrong data-end=\"1002\" data-start=\"992\"\u003eModel:\u003c\/strong\u003e R413\u003c\/li\u003e\r\n\t\u003cli data-end=\"1039\" data-section-id=\"mi5r5v\" data-start=\"1008\"\u003e\n\u003cstrong data-end=\"1034\" data-start=\"1010\"\u003eInner Diameter (ID):\u003c\/strong\u003e 40mm\u003c\/li\u003e\r\n\t\u003cli data-end=\"1071\" data-section-id=\"1m6xa2p\" data-start=\"1040\"\u003e\n\u003cstrong data-end=\"1066\" data-start=\"1042\"\u003eOuter Diameter (OD):\u003c\/strong\u003e 52mm\u003c\/li\u003e\r\n\t\u003cli data-end=\"1092\" data-section-id=\"1kdzl9v\" data-start=\"1072\"\u003e\n\u003cstrong data-end=\"1088\" data-start=\"1074\"\u003eThickness:\u003c\/strong\u003e 7mm\u003c\/li\u003e\r\n\t\u003cli data-end=\"1123\" data-section-id=\"sauq1o\" data-start=\"1093\"\u003e\n\u003cstrong data-end=\"1113\" data-start=\"1095\"\u003eContact Angle:\u003c\/strong\u003e 45° \/ 45°\u003c\/li\u003e\r\n\t\u003cli data-end=\"1176\" data-section-id=\"yd6yvz\" data-start=\"1124\"\u003e\n\u003cstrong data-end=\"1135\" data-start=\"1126\"\u003eType:\u003c\/strong\u003e Sealed angular contact cartridge bearing\u003c\/li\u003e\r\n\t\u003cli data-end=\"1238\" data-section-id=\"1ktyqpt\" data-start=\"1177\"\u003e\n\u003cstrong data-end=\"1195\" data-start=\"1179\"\u003eApplication:\u003c\/strong\u003e Bicycle headset (lower bearing common use)\u003c\/li\u003e\r\n\t\u003cli data-end=\"1287\" data-section-id=\"1l4fwbd\" data-start=\"1239\"\u003e\n\u003cstrong data-end=\"1254\" data-start=\"1241\"\u003eMaterial:\u003c\/strong\u003e Hardened steel with sealed races\u003c\/li\u003e\r\n\t\u003cli data-end=\"1394\" data-section-id=\"1qzswxc\" data-start=\"1288\"\u003e\n\u003cstrong data-end=\"1308\" data-start=\"1290\"\u003eCompatibility:\u003c\/strong\u003e Frames requiring 40x52x7 45\/45 headset bearings (often integrated lower headset cups)\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003chr data-end=\"1399\" data-start=\"1396\"\u003e\r\n\u003ch3 data-end=\"1428\" data-section-id=\"lom3wk\" data-start=\"1401\"\u003eWho Is It Suitable For?\u003c\/h3\u003e\r\n\r\n\u003cul data-end=\"1725\" data-start=\"1429\"\u003e\r\n\t\u003cli data-end=\"1474\" data-section-id=\"12n5l3a\" data-start=\"1429\"\u003eMountain bikers (XC \/ trail \/ light enduro)\u003c\/li\u003e\r\n\t\u003cli data-end=\"1522\" data-section-id=\"1bgkuvl\" data-start=\"1475\"\u003eRoad cyclists with integrated headset systems\u003c\/li\u003e\r\n\t\u003cli data-end=\"1576\" data-section-id=\"s6z0zr\" data-start=\"1523\"\u003eGravel riders needing reliable steering performance\u003c\/li\u003e\r\n\t\u003cli data-end=\"1625\" data-section-id=\"ybyxvc\" data-start=\"1577\"\u003eBike mechanics replacing worn headset bearings\u003c\/li\u003e\r\n\t\u003cli data-end=\"1725\" data-section-id=\"1mzek51\" data-start=\"1626\"\u003eRiders experiencing:\r\n\t\u003cul data-end=\"1725\" data-start=\"1651\"\u003e\r\n\t\t\u003cli data-end=\"1668\" data-section-id=\"eezgsa\" data-start=\"1651\"\u003enotchy steering\u003c\/li\u003e\r\n\t\t\u003cli data-end=\"1685\" data-section-id=\"1r7eu86\" data-start=\"1671\"\u003eheadset play\u003c\/li\u003e\r\n\t\t\u003cli data-end=\"1725\" data-section-id=\"1xaonp0\" data-start=\"1688\"\u003ecorrosion or rough headset rotation\u003c\/li\u003e\r\n\t\u003c\/ul\u003e\r\n\t\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003chr data-end=\"1730\" data-start=\"1727\"\u003e\r\n\u003ch3 data-end=\"1754\" data-section-id=\"10onbcu\" data-start=\"1732\"\u003eWho Should Use It?\u003c\/h3\u003e\r\n\r\n\u003cul data-end=\"2053\" data-start=\"1755\"\u003e\r\n\t\u003cli data-end=\"1823\" data-section-id=\"1uqwus3\" data-start=\"1755\"\u003eRiders servicing or rebuilding a headset with this exact size spec\u003c\/li\u003e\r\n\t\u003cli data-end=\"1882\" data-section-id=\"o4g4m7\" data-start=\"1824\"\u003eCyclists replacing rusted or worn lower headset bearings\u003c\/li\u003e\r\n\t\u003cli data-end=\"1964\" data-section-id=\"vxngtm\" data-start=\"1883\"\u003eBike builders working with frames that specify \u003cstrong data-end=\"1964\" data-start=\"1932\"\u003eIS52\/40 or similar standards\u003c\/strong\u003e\n\u003c\/li\u003e\r\n\t\u003cli data-end=\"2053\" data-section-id=\"fl8e0e\" data-start=\"1965\"\u003eAnyone needing a precise replacement for a \u003cstrong data-end=\"2053\" data-start=\"2010\"\u003e40x52x7 45°\/45° angular-contact bearing\u003c\/strong\u003e\n\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003chr data-end=\"2058\" data-start=\"2055\"\u003e\r\n\u003ch3 data-end=\"2086\" data-section-id=\"1hml7rt\" data-start=\"2060\"\u003eImportant Fitment Note\u003c\/h3\u003e\r\n\r\n\u003cp data-end=\"2124\" data-start=\"2087\"\u003eEven though the size is standardized:\u003c\/p\u003e\r\n\r\n\u003cul data-end=\"2322\" data-start=\"2125\"\u003e\r\n\t\u003cli data-end=\"2199\" data-section-id=\"10c2isg\" data-start=\"2125\"\u003eThe \u003cstrong data-end=\"2199\" data-start=\"2131\"\u003e45°\/45° angle MUST match your frame’s crown race and headset cup\u003c\/strong\u003e\n\u003c\/li\u003e\r\n\t\u003cli data-end=\"2322\" data-section-id=\"5zcxt1\" data-start=\"2200\"\u003eA correct physical size but wrong angle can cause:\r\n\t\u003cul data-end=\"2322\" data-start=\"2255\"\u003e\r\n\t\t\u003cli data-end=\"2275\" data-section-id=\"1djvz2t\" data-start=\"2255\"\u003epoor steering feel\u003c\/li\u003e\r\n\t\t\u003cli data-end=\"2294\" data-section-id=\"61b0ok\" data-start=\"2278\"\u003epremature wear\u003c\/li\u003e\r\n\t\t\u003cli data-end=\"2322\" data-section-id=\"h855iy\" data-start=\"2297\"\u003eheadset play or binding\u003c\/li\u003e\r\n\t\u003c\/ul\u003e\r\n\t\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n","brand":"Zero","offers":[{"title":"Default Title","offer_id":45490092703804,"sku":"HSB009","price":165.0,"currency_code":"ZAR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0637\/2261\/8940\/files\/23973_HSB004-1-scaled-450x450-2.webp?v=1781270392","url":"https:\/\/www.olympiccycles.co.za\/products\/zero-bearing-40x52x7mm-45-45-r413","provider":"Olympic Cycles","version":"1.0","type":"link"}