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Cylindrical roller bearing / double-row
Two-row cylindrical roller bearings are available in two varieties: with a narrowed or a cylindrical bore. While for those with a narrowed bore, the precise quantity of clearance can be got by regulating the press-in space. A few bearings are fixed with lubrication openings and lubrication channels on the external ring. They are acknowledged by additional code "W". These bearings can house high radial loads, and are frequently employed in engine tool spindles. A mechanized bronze retainer keeps up appropriate space between the rolling elements and is extremely efficient for high-velocity purposes. It decreases shaking, has a silent function and can house weighty radial and crash loading. An additional choice is to boast divisible internal or external rings. This makes the mounting simpler and descending of the R variety bearing. It as well boosts load rating ability.