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单排交叉滚柱式回转支承，由两个座圈组成，结构紧凑、重量轻、制造精度高，装配间隙小，对安装精度要求高，滚柱为1：1交叉排列，能同时承受轴向力，倾翻力矩和较大的径向力，被广泛地用于起重运输、工程机械和军工产品上。
Single row cross roller rotary bearing, composed of two seat rings, has a compact structure, light weight, high manufacturing accuracy, small assembly clearance, and high installation accuracy requirements. The rollers are arranged in a 1:1 cross arrangement, and can withstand axial force, overturning moment, and large radial force simultaneously. It is widely used in lifting transportation, engineering machinery, and military products.