{"product_id":"skf-21311-ek-tapered-55-mm-id-roller-bearing-120-mm-od_21311-ek","title":"SKF 21311 EK Tapered 55 mm ID Roller Bearing, 120 mm OD_21311 EK","description":"\u003cp\u003eThis roller bearing is a single-row tapered solution designed to support rotating shafts in demanding mechanical assemblies. It combines steel rolling elements with a tapered bore and sheet‑metal cage to manage combined radial and axial loads at moderate to high operating speeds within industrial machinery contexts.\u003c\/p\u003e\u003ch3\u003e\u003cb\u003eFeatures and Benefits\u003c\/b\u003e\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e159 kN dynamic load capacity for sustained operational stresses\u003cbr\u003e166 kN static load capacity for high static force resistance\u003cbr\u003eTapered bore enabling secure press-fit assembly on tapered shafts\u003cbr\u003eSheet‑metal cage ensuring accurate roller guidance and reduced friction\u003cbr\u003eCN internal clearance permitting precise axial and radial play control\u003cbr\u003eRated for 7,500 r\/min to accommodate high-speed rotation demands\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003e\u003cb\u003eApplications\u003c\/b\u003e\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eSuitable for heavy machinery bearing housings with combined loads\u003cbr\u003eUsed with gearbox shafts requiring tapered-bore mounting\u003cbr\u003eIdeal for rotating equipment operating at elevated speeds\u003cbr\u003eCan be used for replacement in assemblies with 120 x 55 x 29 dimensions\u003cbr\u003eSuitable for industrial drives needing steel roller durability\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003e\u003cb\u003eWhat material composes the rolling elements and races?\u003c\/b\u003e\u003c\/h3\u003e\u003cp\u003eThe rollers and raceways are manufactured from steel to provide wear resistance and load support.\u003c\/p\u003e\u003ch3\u003e\u003cb\u003eHow does the cage design affect maintenance intervals?\u003c\/b\u003e\u003c\/h3\u003e\u003cp\u003eThe sheet‑metal cage maintains roller spacing and reduces contamination‑related wear, which can extend bearing service life under proper lubrication.\u003c\/p\u003e\u003ch3\u003e\u003cb\u003eWhat clearance grade does the bearing employ for axial positioning?\u003c\/b\u003e\u003c\/h3\u003e\u003cp\u003eIt uses CN internal clearance to balance axial movement and preload sensitivity in assemblies.\u003c\/p\u003e\u003ch3\u003e\u003cb\u003eWhat mounting considerations apply for the tapered bore?\u003c\/b\u003e\u003c\/h3\u003e\u003cp\u003eA tapered bore requires an appropriate tapered adapter or sleeve to achieve correct interference fit and axial location on the shaft.\u003c\/p\u003e\u003ch3\u003eSelection guidance\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eReview the manufacturer specifications for compatibility with your equipment.\u003c\/li\u003e\n\u003cli\u003eConfirm the required dimensions and fitting arrangement before ordering.\u003c\/li\u003e\n\u003cli\u003eCheck the intended operating conditions against the product documentation.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SKF","offers":[{"title":"Default Title","offer_id":56506792018299,"sku":"SKF-207-8388","price":251.23,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0283\/5408\/4963\/files\/i53od8q6s3an2tp5qzgo.jpg?v=1791933436","url":"https:\/\/tiedex.co.uk\/products\/skf-21311-ek-tapered-55-mm-id-roller-bearing-120-mm-od_21311-ek","provider":"TIEDEX LIMITED","version":"1.0","type":"link"}