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。
dolly and a/c spo end item identification, 0.5000 inches nominal bore diameter, 0.1500 inches nominal base thickness, 0.5630 inches nominal base length, 2.5000 inches nominal center to center distance between mounting holes along width