一種組裝單元,由包含單列或多列滾子軸承的外殼組成,設計用於滿足各種或特定的安裝條件。
52.4 millimeters nominal base length, 131.8 millimeters minimum and 147.6 millimeters maximum center to center distance between mounting holes along width, 54.0 millimeters nominal height from bottom of base to bore centerline, 33.3 millimeters nominal base thickness, 1.6875 inches nominal bore diameter