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。
cage:steel,sheet,strip or wire form,centered by rolling elements,bronze or brass cages,not in sheet,strip or wire form are an acceptable alternate.shields:none;seals:double ;internal clearance:afbma-3;tolerances:abec-1 ;lubricant:4824-15p (mobil number 28) 4824-15aj(royco number 28)is an acceptable alternate grease.treatment:bearing designed for operation at degrees (f);supplementarspecification:416825-1 special features, motors and generators (motor) end item identification, ball,single row radial non-filling slot part name assigned by controlling agency