Treatment method for four-row cylindrical roller bearings and retainers

Abstract

The invention discloses a treatment method for four-row cylindrical roller bearings and retainers. Each four-row cylindrical roller bearing comprises double-raceway outer rings, outer stop rings, a middle stop ring, middle separating rings, cylinder rollers, single-row inner rings and retainers, wherein the number of the double-raceway outer rings is two; the number of the single-row inner rings is two; the outer stop rings are installed on two sides of the double-raceway outer rings; the middle stop ring is placed between the two double-raceway outer rings; each middle separating ring is installed between double raceways of each double-raceway outer ring; each retainer is installed between the corresponding double-raceway outer ring and the corresponding single-row inner ring; and a cylinder roller is installed in each retainer. The treatment process for the retainers is simple in principle, the operation process is flexible, the machining treatment cost is low, the quality is good, and products are good in surface compactness and abrasion resistance and environmentally friendly.

Description

technical field [0001] The invention relates to the technical field of bearings, in particular to a processing method for a four-row cylindrical roller bearing and a cage. Background technique [0002] The four-row cylindrical roller bearing is a separable bearing. The inner and outer rings are in linear contact with the rollers, the friction coefficient is small, the radial load capacity is large, and the cleaning, inspection and disassembly of the bearing are very convenient. This type of bearing can obtain high machining accuracy, and the friction of the bearing itself is lower than other bearings, so the four-row cylindrical roller bearing is especially suitable for rolls that require high speed and high precision, such as wire rod mills, profile mills and sheet cold and hot Support for rolling mills, blanking machines, etc. The outer ring structure of the traditional four-row cylindrical roller bearing is equipped with a fixed rib and lubricating oil groove, which eas...

AI Technical Summary

Problems solved by technology

The outer ring structure of the traditional four-row cylindrical roller bearing is equipped with a fixed rib and lubricating oil groove, which easily leads to the concentration of bearing parts. When the bearing parts are heat treated, quenched and ground, the oil groove becomes the source of cracks that may generate cracks ;In addition, during the operation of the bearing, the edges of the bearing parts are prone to stress, which makes the bearing parts easy to damage and reduces the service life of the bearing

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