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。
0.6250 inches nominal bore diameter, fixed block type, 2.1250 inches nominal center to center distance between mounting holes along side of a square, rigid alignment type, 1.1250 inches nominal assembly overall length