In contrast, DF mounting is used in only a few applications, primarily where misalignment must be accommodated. Speed capability is normally lower than a DB pair of identical preload.
DT mounting employs tandem pairs that offer greater capacity without increasing bearing size, through load sharing. The DT pairs can counter heavy thrust loads from one direction but they cannot take reversing loads as DB and DF pairs can. DT sets do not have inbuilt preloading and should be used in conjunction with spring preloading.什么是球轴承?
球轴承的功能
由小及大马达,汽车车桥电动风扇和硬盘驱动器(HDD ) ,球轴承主要用于机床的旋转运动的广泛。球轴承支撑旋转部件,减少摩擦,方便机器的流畅运行。球轴承的尺寸范围可以从比米粒更小 - 小到足以装进一个手表,超过一米直径的工厂和电厂的应用。 NMB ,是Minebea集团公司,专门从事具有30mm或更小的外径微型,小型球轴承的制造。论文网
球轴承组件
球轴承由四个主要部分组成:一个大环(外环) ,小环(内环) ,环(钢球)之间的滚珠及保持架,以防止球击中对方。现代的结构可以追溯到大约1500年,当达芬奇发明的球轴承,以减少摩擦对马拉大车的车轴。对于超过500年,球轴承已经被这个简单的结构定义。