DB组合，DF组合及四点接触、双列角接触球轴承可承受径向和双向轴向负荷。
DB combinations, DF combinations and four-point contact, double row angular contact ball bearings can withstand radial and bi-axial load.
DB组合，DF组合及四点接触、双列角接触球轴承可承受径向和双向轴向负荷。
DB combinations, DF combinations and four-point contact, double row angular contact ball bearings can withstand radial and bi-axial load.
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