Insert ball bearing unit is consisted of a double sealed, single row bearing and one of various types of housings (cast iron or stamping steel housing).

• 带座外球面球轴承由一个双面密封且外圈具有球形外截面的宽内圈深沟球轴承和一个轴承座(铸铁座或钢板冲压座)两部分组成。