Page 4 of Spherical Plain Bearings by RBC Bearings

r bc originated the precision ground single fracture spherical plain bearing and continues to be the leader in design and innovation listed below are the basic types of spherical plain bearings that rbc makes with pertinent selection criteria spherical plain bearing selection guide b-l b-lss mbmb-ss standard radial b-el b-elss mb-e mb-ess extended inner ring bh-l bh-lss mbhmbh-ss high misalignment b-lssq mb-ssq quadlubeŽ b-lnmss mb-nmss self-lubricated duralubetm b-sa mb-sa angular contact b-dsa-3 mb-dsa3 double acting angular contact radial load reversing radial load uni-directional load thrust load reversing thrust load capability of misalignment max operating temp open 1 max operating temp sealed sensitivity to contamination re-lubrication corrosion protection adjustable clearance excellent excellent good good good good 500 250 low yes good no excellent excellent good good good good 500 250 low yes good no excellent excellent good good good excellent 500 250 low yes good no excellent excellent excellent good good good 500 250 low yes good no excellent good excellent good poor good 250 high no excellent no good excellent good excellent none good 500 low yes good yes excellent excellent good excellent excellent minimal 500 low yes good yes 1 operating temperatures above 300°f require a special heat treatment radial type spherical plain bearings standard series b-l and mb series open b-el and mb-e series open bh-l and mbh series open sealed sealed designed to support heavy radial loads under misalignment these bearings also possess moderate thrust loading capability they are non-separable with a single fractured outer ring and are available in open or sealed designs and inch or metric sizes with an extended inner ring the need for additional locational spacers is eliminated the inner ring bore is relieved to prevent excess bending stress available in open or sealed designs and inch or metric sizes due to greater inner ring cross section the bh-l and mbh series is capable of greater misalignment available in open or sealed designs and inch or metric sizes 4

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