一種組裝單元,由包含單列或多列滾珠軸承的外殼組成,設計用於滿足各種或特定的安裝條件。
rigid alignment type, 0.500 inches nominal base thickness, 0.6250 inches nominal bore diameter, 1.000 inches nominal base length, 2.875 inches nominal center to center distance between mounting holes along width