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滚动轴承是现代工业中重要的配件之一,为了保证它的性能和质量,必须满足国标规定的各项技术指标,内外套圈与滚动体之间的尺寸配合精度即是其中极重要的一项。为此,同一轴承中滚动体直径的相互差就需要保持在规定的范围内,但这一点是无法通过机械加工的精度来保证的,只能采用选配的方式将滚动体的直径公差带按一定的间隔分成若干组,然后将同一组的滚动体与相对应的内外套圈配合,从而保证必须的配合精度。
Rolling bearing is one of the most important parts in modern industry. In order to ensure its performance and quality, it must meet various technical specifications stipulated by national standard. The dimension matching precision between inner and outer rings and rolling elements is one of the most important items. To this end, the same bearing in the rolling diameter difference between the need to maintain within the specified range, but this is not guaranteed by the accuracy of machining can only be used in an optional way to rolling the body diameter tolerance with A certain interval is divided into several groups, and then with the same group of rolling elements and the corresponding inner and outer rings with, so as to ensure the necessary accuracy with.