{"title":"CEMA wheel bearings","description":null,"products":[{"product_id":"cema-headset-bearing-418-x-301-x-65","title":"CEMA headset bearing 41.8 × 30.1 × 6.5","description":"\u003ch3\u003eCema Headset Bearing – headset bearing 41.8 x 30.1 x 6.5 mm\u003c\/h3\u003e\n\u003cp\u003eCema Headset Bearing 41.8 x 30.1 x 6.5 is an ACB-type headset bearing for a bicycle headset. The bearing dimensions are 41.8 mm outer diameter, 30.1 mm inner diameter, and 6.5 mm height. The contact angle is 45°\/45°.\u003c\/p\u003e\n\u003cp\u003eThis is a chrome steel headset bearing suitable for compatible integrated and semi-integrated headset solutions when the frame, fork, and headset cup dimensions match this bearing.\u003c\/p\u003e\n\u003cp\u003eThe headset bearing size should always be verified from the old bearing, the frame manufacturer's specifications, or by measuring. The outer diameter alone is not enough; the inner diameter, height, and contact angles must also match.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003ePrecise replacement bearing for a bicycle headset\u003c\/h3\u003e\n\u003cp\u003eThe headset bearing directly affects the precision and feel of the bicycle steering and the elimination of play. A worn, rusted, or pitted bearing can cause clicking in the steering, stiffness, seizing in the center position, or difficult-to-adjust play.\u003c\/p\u003e\n\u003cp\u003eCema 41.8 x 30.1 x 6.5 mm 45°\/45° is a replacement bearing for situations where the original headset bearing has the same dimensions and angles. The ACB design means an angular contact headset bearing where the bearing's contact surfaces fit directly against the contact surfaces of the frame or headset.\u003c\/p\u003e\n\u003cp\u003eDuring installation, it is advisable to carefully remove the old bearing, thoroughly clean the bearing seats, and check that there is no damage to the contact surfaces of the frame or fork. A thin layer of suitable grease should be applied to the outer surface and contact surfaces of the new bearing to prevent moisture and creaking.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eTechnical specifications and features\u003c\/h2\u003e\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\n\t\u003cli\u003eCema headset bearing for a bicycle headset\u003c\/li\u003e\n\n\t\u003cli\u003eACB \/ angular contact bearing design\u003c\/li\u003e\n\n\t\u003cli\u003eDimensions 41.8 x 30.1 x 6.5 mm\u003c\/li\u003e\n\n\t\u003cli\u003eContact angle 45°\/45°\u003c\/li\u003e\n\n\t\u003cli\u003eChrome steel construction\u003c\/li\u003e\n\n\t\u003cli\u003eReplacement bearing for a worn or pitted headset bearing\u003c\/li\u003e\n\n\t\u003cli\u003eSuitable for compatible frames and headset systems\u003c\/li\u003e\n\n\t\u003cli\u003eAlways select based on the dimensions and angles of the old bearing\u003c\/li\u003e\n\n\t\u003cli\u003eSold as a single bearing\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003cul\u003e\n\n\t\u003cli\u003e\n\n\u003cstrong\u003eProduct:\u003c\/strong\u003e Cema Headset Bearing 41.8 x 30.1 x 6.5\u003c\/li\u003e\n\n\t\u003cli\u003e\n\n\u003cstrong\u003eProduct type:\u003c\/strong\u003e Headset bearing\u003c\/li\u003e\n\n\t\u003cli\u003e\n\n\u003cstrong\u003eBearing type:\u003c\/strong\u003e ACB \/ angular contact bearing\u003c\/li\u003e\n\n\t\u003cli\u003e\n\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Chrome steel\u003c\/li\u003e\n\n\t\u003cli\u003e\n\n\u003cstrong\u003eOuter diameter:\u003c\/strong\u003e 41.8 mm\u003c\/li\u003e\n\n\t\u003cli\u003e\n\n\u003cstrong\u003eInner diameter:\u003c\/strong\u003e 30.1 mm\u003c\/li\u003e\n\n\t\u003cli\u003e\n\n\u003cstrong\u003eHeight \/ width:\u003c\/strong\u003e 6.5 mm\u003c\/li\u003e\n\n\t\u003cli\u003e\n\n\u003cstrong\u003eContact angle:\u003c\/strong\u003e 45°\/45°\u003c\/li\u003e\n\n\t\u003cli\u003e\n\n\u003cstrong\u003eColor:\u003c\/strong\u003e Silver \/ Black\u003c\/li\u003e\n\n\t\u003cli\u003e\n\n\u003cstrong\u003eManufacturer product ID:\u003c\/strong\u003e SRC-HS-JS09\u003c\/li\u003e\n\n\t\u003cli\u003e\n\n\u003cstrong\u003eEAN \/ GTIN:\u003c\/strong\u003e 4712910900641\u003c\/li\u003e\n\n\t\u003cli\u003e\n\n\u003cstrong\u003eSales unit:\u003c\/strong\u003e 1 bearing\u003c\/li\u003e\n\n\n\u003c\/ul\u003e","brand":"CEMA","offers":[{"title":"Default Title","offer_id":57434968326468,"sku":"SRC-HS-JS09","price":18.5,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0987\/6068\/7940\/files\/cema-ohjainlaakeri-41-8x30-1x6-5_orig.jpg?v=1791571818"},{"product_id":"cema-headset-bearing-418x305x77","title":"Cema Headset Bearing 41.8x30.5x7.7","description":"\u003ch2\u003eCEMA Headset Bearing 41.8 x 30.5 x 7.7 mm 45°\/45°\u003c\/h2\u003e\n\u003cp\u003eThe CEMA Headset Bearing 41.8 x 30.5 x 7.7 mm 45°\/45° is a high-quality bicycle headset bearing designed to replace a worn, loose, or noisy bearing. The headset bearing is an important part of the bike's handling, as it enables the fork and handlebars to move smoothly, evenly, and without play.\u003c\/p\u003e\n\u003cp\u003eThis bearing is suitable for headset solutions requiring a size of 41.8 mm outer diameter, 30.5 mm inner diameter, and 7.7 mm height. The contact angles are 45°\/45°, so compatibility must also be checked for the angles, not just the diameters. The wrong contact angle can cause a poor fit, loose steering, creaking, or premature bearing wear.\u003c\/p\u003e\n\u003cp\u003eThe CEMA headset bearing is a good replacement part for road, gravel, and mountain bikes when the old bearing is worn or the steering no longer feels smooth. The bearing should be replaced if the steering feels notched, creaks, is stiff, or has play.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eCEMA 41.8 x 30.5 x 7.7 mm headset bearing - technical specifications and compatibility\u003c\/h2\u003e\n\u003cp\u003eDimensions are crucial when choosing a headset bearing. This bearing is not the same as 41.8 x 30.1 x 6.5 mm, 41.8 x 30.5 x 8 mm, or 41.8 x 32.7 x 6 mm bearings, even though the outer diameter is almost the same. Check the markings on the old bearing or measure the bearing before ordering.\u003c\/p\u003e\n\u003cp\u003eA 45°\/45° contact angle means that both the inner and outer races have a 45-degree angle. This is a common angled ACB headset bearing, but it should not be replaced with a 36°\/45° bearing unless specifically approved by the frame or headset manufacturer.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTechnical specifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\n\t\u003cli\u003eProduct: CEMA Headset Bearing 41.8 x 30.5 x 7.7 mm\u003c\/li\u003e\n\n\t\u003cli\u003eProduct type: headset bearing\u003c\/li\u003e\n\n\t\u003cli\u003eBearing type: ACB \/ angular contact bearing\u003c\/li\u003e\n\n\t\u003cli\u003eOuter diameter: 41.8 mm\u003c\/li\u003e\n\n\t\u003cli\u003eInner diameter: 30.5 mm\u003c\/li\u003e\n\n\t\u003cli\u003eHeight \/ width: 7.7 mm\u003c\/li\u003e\n\n\t\u003cli\u003eContact angles: 45°\/45°\u003c\/li\u003e\n\n\t\u003cli\u003eMaterial: steel \/ chrome steel\u003c\/li\u003e\n\n\t\u003cli\u003eApplication: bicycle headset bearing\u003c\/li\u003e\n\n\t\u003cli\u003eManufacturer code: SRC-HS-JS13\u003c\/li\u003e\n\n\t\u003cli\u003eShort model\/search code: JS13\u003c\/li\u003e\n\n\n\u003c\/ul\u003e","brand":"CEMA","offers":[{"title":"Default Title","offer_id":57434968490308,"sku":"SRC-HS-JS13","price":18.5,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0987\/6068\/7940\/files\/cema-headset-bearing-52x40x7-d528320c_orig.jpg?v=1791571819"},{"product_id":"cema-headset-bearing-418x327x6","title":"Cema Headset Bearing 41.8x32.7x6","description":"\u003ch2\u003eCEMA Headset Bearing 41.8 x 32.7 x 6 mm 45°\/45°\u003c\/h2\u003e\n\u003cp\u003eCEMA Headset Bearing 41.8 x 32.7 x 6 mm 45°\/45° is a high-quality steering bearing for integrated and compatible steering bearing solutions. The steering bearing is a small but extremely important part of the bike's steering: it enables the handlebars and fork to move smoothly, without play, and with light rotation.\u003c\/p\u003e\n\u003cp\u003eThis bearing is suitable for situations where the dimensions of the old steering bearing are \u003cstrong\u003e41.8 mm outer diameter, 32.7 mm inner diameter, and 6 mm height\u003c\/strong\u003e, with contact angles of \u003cstrong\u003e45°\/45°\u003c\/strong\u003e. When choosing a steering bearing, outer diameter alone is not enough; the inner diameter, height, and contact angles must also match the old bearing or the requirements of the frame\/steering bearing.\u003c\/p\u003e\n\u003cp\u003eA CEMA bearing is a good replacement for a worn, noisy, seized, or loose steering bearing. The chrome steel construction offers precise rotation and good durability in normal road, gravel, and mountain bike use, provided the bearing is installed correctly and protected from moisture and dirt.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eCEMA 41.8 x 32.7 x 6 mm steering bearing - specifications and compatibility\u003c\/h2\u003e\n\u003cp\u003eSteering bearing wear is often visible as noise, play, stiff steering, or play when pressure is applied to the front brake. A new bearing of the correct size restores steering precision and makes the bike safer and more pleasant to ride.\u003c\/p\u003e\n\u003cp\u003eThis CEMA bearing is an angular ACB steering bearing with contact angles of 45°\/45°. Contact angles are a particularly important compatibility specification, as a 45°\/45° bearing should not be replaced with a 36°\/45° bearing, even though the outer dimensions may look almost the same. The wrong contact angle can cause a poor fit, play, creaking, or premature wear.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\n\t\u003cli\u003eProduct: CEMA Headset Bearing 41.8 x 32.7 x 6 mm\u003c\/li\u003e\n\n\t\u003cli\u003eProduct type: steering bearing\u003c\/li\u003e\n\n\t\u003cli\u003eBearing type: ACB \/ angular contact bearing\u003c\/li\u003e\n\n\t\u003cli\u003eOuter diameter: 41.8 mm\u003c\/li\u003e\n\n\t\u003cli\u003eInner diameter: 32.7 mm\u003c\/li\u003e\n\n\t\u003cli\u003eHeight \/ width: 6 mm\u003c\/li\u003e\n\n\t\u003cli\u003eContact angles: 45°\/45°\u003c\/li\u003e\n\n\t\u003cli\u003eMaterial: chrome steel \/ chrome steel\u003c\/li\u003e\n\n\t\u003cli\u003eColor: silver \/ steel\u003c\/li\u003e\n\n\t\u003cli\u003eApplication: bicycle steering bearing\u003c\/li\u003e\n\n\t\u003cli\u003eManufacturer code: SRC-HS-JS12\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCompatibility note\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\n\t\u003cli\u003eCheck the dimensions of the old bearing before ordering.\u003c\/li\u003e\n\n\t\u003cli\u003eThe dimensions must match: 41.8 x 32.7 x 6 mm.\u003c\/li\u003e\n\n\t\u003cli\u003eThe contact angle must be 45°\/45°.\u003c\/li\u003e\n\n\t\u003cli\u003eNot the same product as the 41.8 x 30.1 x 6.5 mm bearing.\u003c\/li\u003e\n\n\t\u003cli\u003eNot the same product as the 41.8 x 30.5 x 8 mm bearing.\u003c\/li\u003e\n\n\t\u003cli\u003eDoes not replace a bearing with a 36°\/45° contact angle.\u003c\/li\u003e\n\n\t\u003cli\u003eIt is advisable to confirm the fit of the steering bearing from the markings on the old bearing or by measuring.\u003c\/li\u003e\n\n\n\u003c\/ul\u003e","brand":"CEMA","offers":[{"title":"Default Title","offer_id":57434968654148,"sku":"SRC-HS-JS12","price":18.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0987\/6068\/7940\/files\/cema-headset-bearing-52x40x7-754356c4_orig.jpg?v=1791571820"}],"url":"https:\/\/www.ridemore.fi\/en\/collections\/cema-pyoran-laakerit.oembed","provider":"Ride More","version":"1.0","type":"link"}