{"product_id":"headsetset-bearing-40x52x7mm-36-45-r426","title":"Zero Headset Bearing 40x52x7mm 36\/45 R426","description":"\u003ch1 data-end=\"43\" data-section-id=\"etic07\" data-start=\"0\"\u003eZero Headset Bearing 40x52x7mm 36\/45 R426\u003c\/h1\u003e\r\n\r\n\u003cp data-end=\"82\" data-start=\"45\"\u003e\u003cspan class=\"hover:entity-accent entity-underline inline cursor-pointer align-baseline\" role=\"button\" tabindex=\"0\"\u003eHeadset Bearing R426 40 x 52 x 7mm\u003c\/span\u003e\u003c\/p\u003e\r\n\r\n\u003ch2 data-end=\"98\" data-section-id=\"1a65zp3\" data-start=\"84\"\u003eWhat Is It?\u003c\/h2\u003e\r\n\r\n\u003cp data-end=\"568\" data-start=\"99\"\u003eThe Zero Headset Bearing R426 is a replacement angular-contact cartridge bearing used in integrated and semi-integrated (zero-stack) bicycle headsets. It is designed to provide smooth steering performance by allowing the fork and frame to rotate freely while supporting rider and impact loads. The R426 designation refers to a bearing measuring \u003cstrong data-end=\"529\" data-start=\"444\"\u003e40mm inner diameter × 52mm outer diameter × 7mm width with 36°\/45° bearing angles\u003c\/strong\u003e.\u003c\/p\u003e\r\n\r\n\u003ch2 data-end=\"585\" data-section-id=\"1ma7m6t\" data-start=\"570\"\u003eKey Features\u003c\/h2\u003e\r\n\r\n\u003cul data-end=\"964\" data-start=\"586\"\u003e\r\n\t\u003cli data-end=\"628\" data-section-id=\"tkts6h\" data-start=\"586\"\u003eSealed cartridge headset bearing design.\u003c\/li\u003e\r\n\t\u003cli data-end=\"687\" data-section-id=\"15heatf\" data-start=\"629\"\u003e40mm inner diameter, 52mm outer diameter, 7mm thickness.\u003c\/li\u003e\r\n\t\u003cli data-end=\"738\" data-section-id=\"1u19gpo\" data-start=\"688\"\u003e36° x 45° angular contact bearing configuration.\u003c\/li\u003e\r\n\t\u003cli data-end=\"779\" data-section-id=\"1q4q6au\" data-start=\"739\"\u003eSmooth steering and load distribution.\u003c\/li\u003e\r\n\t\u003cli data-end=\"844\" data-section-id=\"6qu70\" data-start=\"780\"\u003eSealed construction helps resist water and dirt contamination.\u003c\/li\u003e\r\n\t\u003cli data-end=\"907\" data-section-id=\"n1z9fa\" data-start=\"845\"\u003eSuitable for many integrated and zero-stack headset systems.\u003c\/li\u003e\r\n\t\u003cli data-end=\"964\" data-section-id=\"7ehl8d\" data-start=\"908\"\u003eDirect replacement for worn or rough headset bearings.\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003ch2 data-end=\"983\" data-section-id=\"1a3ueyz\" data-start=\"966\"\u003eSpecifications\u003c\/h2\u003e\r\n\r\n\u003cdiv class=\"TyagGW_tableContainer\"\u003e\r\n\u003cdiv class=\"group TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\"\u003e\r\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\" data-end=\"1425\" data-start=\"985\"\u003e\r\n\t\u003cthead data-end=\"1012\" data-start=\"985\"\u003e\r\n\t\t\u003ctr data-end=\"1012\" data-start=\"985\"\u003e\r\n\t\t\t\u003cth class=\"last:pe-10 align-top\" data-col-size=\"sm\" data-end=\"1001\" data-start=\"985\"\u003eSpecification\u003c\/th\u003e\r\n\t\t\t\u003cth class=\"last:pe-10 align-top\" data-col-size=\"md\" data-end=\"1012\" data-start=\"1001\"\u003eDetails\u003c\/th\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\u003c\/thead\u003e\r\n\t\u003ctbody data-end=\"1425\" data-start=\"1040\"\u003e\r\n\t\t\u003ctr data-end=\"1084\" data-start=\"1040\"\u003e\r\n\t\t\t\u003ctd data-col-size=\"sm\" data-end=\"1055\" data-start=\"1040\"\u003eProduct Type\u003c\/td\u003e\r\n\t\t\t\u003ctd data-col-size=\"md\" data-end=\"1084\" data-start=\"1055\"\u003eHeadset Cartridge Bearing\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr data-end=\"1108\" data-start=\"1085\"\u003e\r\n\t\t\t\u003ctd data-col-size=\"sm\" data-end=\"1100\" data-start=\"1085\"\u003eBearing Code\u003c\/td\u003e\r\n\t\t\t\u003ctd data-col-size=\"md\" data-end=\"1108\" data-start=\"1100\"\u003eR426\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr data-end=\"1140\" data-start=\"1109\"\u003e\r\n\t\t\t\u003ctd data-col-size=\"sm\" data-end=\"1131\" data-start=\"1109\"\u003eInner Diameter (ID)\u003c\/td\u003e\r\n\t\t\t\u003ctd data-col-size=\"md\" data-end=\"1140\" data-start=\"1131\"\u003e40 mm\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr data-end=\"1172\" data-start=\"1141\"\u003e\r\n\t\t\t\u003ctd data-col-size=\"sm\" data-end=\"1163\" data-start=\"1141\"\u003eOuter Diameter (OD)\u003c\/td\u003e\r\n\t\t\t\u003ctd data-col-size=\"md\" data-end=\"1172\" data-start=\"1163\"\u003e52 mm\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr data-end=\"1189\" data-start=\"1173\"\u003e\r\n\t\t\t\u003ctd data-col-size=\"sm\" data-end=\"1181\" data-start=\"1173\"\u003eWidth\u003c\/td\u003e\r\n\t\t\t\u003ctd data-col-size=\"md\" data-end=\"1189\" data-start=\"1181\"\u003e7 mm\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr data-end=\"1219\" data-start=\"1190\"\u003e\r\n\t\t\t\u003ctd data-col-size=\"sm\" data-end=\"1206\" data-start=\"1190\"\u003eBearing Angle\u003c\/td\u003e\r\n\t\t\t\u003ctd data-col-size=\"md\" data-end=\"1219\" data-start=\"1206\"\u003e36° \/ 45°\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr data-end=\"1272\" data-start=\"1220\"\u003e\r\n\t\t\t\u003ctd data-col-size=\"sm\" data-end=\"1235\" data-start=\"1220\"\u003eBearing Type\u003c\/td\u003e\r\n\t\t\t\u003ctd data-col-size=\"md\" data-end=\"1272\" data-start=\"1235\"\u003eAngular Contact Cartridge Bearing\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr data-end=\"1323\" data-start=\"1273\"\u003e\r\n\t\t\t\u003ctd data-col-size=\"sm\" data-end=\"1287\" data-start=\"1273\"\u003eApplication\u003c\/td\u003e\r\n\t\t\t\u003ctd data-col-size=\"md\" data-end=\"1323\" data-start=\"1287\"\u003eIntegrated \/ Zero-Stack Headsets\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr data-end=\"1359\" data-start=\"1324\"\u003e\r\n\t\t\t\u003ctd data-col-size=\"sm\" data-end=\"1334\" data-start=\"1324\"\u003eSealing\u003c\/td\u003e\r\n\t\t\t\u003ctd data-col-size=\"md\" data-end=\"1359\" data-start=\"1334\"\u003eSealed Bearing Design\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr data-end=\"1425\" data-start=\"1360\"\u003e\r\n\t\t\t\u003ctd data-col-size=\"sm\" data-end=\"1369\" data-start=\"1360\"\u003eWeight\u003c\/td\u003e\r\n\t\t\t\u003ctd data-col-size=\"md\" data-end=\"1425\" data-start=\"1369\"\u003eApproximately 33 g (varies slightly by manufacturer)\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\u003c\/tbody\u003e\r\n\u003c\/table\u003e\r\n\u003c\/div\u003e\r\n\u003c\/div\u003e\r\n\r\n\u003cp data-end=\"1552\" data-start=\"1427\"\u003eThe R426 specification corresponds to a 40×52×7 mm bearing with 36°\/45° contact angles.\u003c\/p\u003e\r\n\r\n\u003ch2 data-end=\"1561\" data-section-id=\"1xwciez\" data-start=\"1554\"\u003ePros\u003c\/h2\u003e\r\n\r\n\u003cp data-end=\"1629\" data-start=\"1562\"\u003e✅ Cost-effective solution for restoring smooth headset performance.\u003c\/p\u003e\r\n\r\n\u003cp data-end=\"1680\" data-start=\"1631\"\u003e✅ Sealed design reduces maintenance requirements.\u003c\/p\u003e\r\n\r\n\u003cp data-end=\"1730\" data-start=\"1682\"\u003e✅ Handles steering and impact loads efficiently.\u003c\/p\u003e\r\n\r\n\u003cp data-end=\"1801\" data-start=\"1732\"\u003e✅ Easy replacement when matched to the correct headset specification.\u003c\/p\u003e\r\n\r\n\u003cp data-end=\"1868\" data-start=\"1803\"\u003e✅ Widely used size across many modern MTB and road bike headsets.\u003c\/p\u003e\r\n\r\n\u003ch2 data-end=\"1877\" data-section-id=\"1xvztdg\" data-start=\"1870\"\u003eCons\u003c\/h2\u003e\r\n\r\n\u003cp data-end=\"1937\" data-start=\"1878\"\u003e❌ Must exactly match bearing dimensions and contact angles.\u003c\/p\u003e\r\n\r\n\u003cp data-end=\"2011\" data-start=\"1939\"\u003e❌ Incorrect angle specification can cause poor fitment and headset play.\u003c\/p\u003e\r\n\r\n\u003cp data-end=\"2080\" data-start=\"2013\"\u003e❌ Bearings eventually wear from water ingress, dirt, and heavy use.\u003c\/p\u003e\r\n\r\n\u003cp data-end=\"2167\" data-start=\"2082\"\u003e❌ Requires headset disassembly for replacement.\u003c\/p\u003e\r\n\r\n\u003ch2 data-end=\"2195\" data-section-id=\"13o4ft3\" data-start=\"2169\"\u003eWho Is It Suitable For?\u003c\/h2\u003e\r\n\r\n\u003cul data-end=\"2376\" data-start=\"2196\"\u003e\r\n\t\u003cli data-end=\"2219\" data-section-id=\"1xkrtbn\" data-start=\"2196\"\u003eMountain bike riders.\u003c\/li\u003e\r\n\t\u003cli data-end=\"2248\" data-section-id=\"1ov5z9c\" data-start=\"2220\"\u003eTrail and enduro cyclists.\u003c\/li\u003e\r\n\t\u003cli data-end=\"2290\" data-section-id=\"e51j22\" data-start=\"2249\"\u003eRoad cyclists with integrated headsets.\u003c\/li\u003e\r\n\t\u003cli data-end=\"2325\" data-section-id=\"1208ws5\" data-start=\"2291\"\u003eBicycle mechanics and workshops.\u003c\/li\u003e\r\n\t\u003cli data-end=\"2376\" data-section-id=\"11m23me\" data-start=\"2326\"\u003eRiders servicing worn or rough headset bearings.\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003ch2 data-end=\"2399\" data-section-id=\"10v8nod\" data-start=\"2378\"\u003eWho Should Use It?\u003c\/h2\u003e\r\n\r\n\u003cp data-end=\"2847\" data-start=\"2400\"\u003eThis bearing is ideal for cyclists whose existing headset bearing is marked \u003cstrong data-end=\"2484\" data-start=\"2476\"\u003eR426\u003c\/strong\u003e, \u003cstrong data-end=\"2497\" data-start=\"2486\"\u003e40x52x7\u003c\/strong\u003e, or \u003cstrong data-end=\"2513\" data-start=\"2502\"\u003e36°\/45°\u003c\/strong\u003e. It is intended for replacing a worn, gritty, loose, or corroded headset bearing while maintaining the original headset fit and steering performance. Before purchasing, confirm the dimensions and bearing angles on the existing bearing, as similar-sized bearings may use different contact angles.\u003c\/p\u003e\r\n\r\n\u003ch2 data-end=\"2863\" data-section-id=\"1mrtquc\" data-start=\"2849\"\u003eBottom Line\u003c\/h2\u003e\r\n\r\n\u003cp data-end=\"3244\" data-start=\"2864\"\u003eThe Zero Headset Bearing 40x52x7mm 36\/45 R426 is a common replacement headset bearing that offers smooth steering, durability, and reliable performance when matched to the correct headset system. Its sealed angular-contact design makes it an excellent maintenance item for restoring precise handling and eliminating headset roughness or play. \u003c\/p\u003e\r\n","brand":"Zero","offers":[{"title":"Default Title","offer_id":46442269966558,"sku":"HSB013","price":155.0,"currency_code":"ZAR","in_stock":true}],"url":"https:\/\/onlino-bicycle-shopco.shop\/products\/headsetset-bearing-40x52x7mm-36-45-r426","provider":"Online Bicycle Shop","version":"1.0","type":"link"}