此类型产品是托辊轴承中最通用的一种，开式轴承也叫平板轴承，即轴承本身不带密封，托辊本来就有几层尼龙托辊轴承密封圈的保护，密封性能已经很好，轴承再加密封也没太大的用处。开式轴承方便安装前自己按实际情况掌握润滑油脂加注量。开式轴承比密封轴承成本也有一定的价格优势。便于提高托辊乃至于输送机的市场竞争力。
   This is the most general type of idler roller bearing products. Open bearing is also called flat plate bearing, that is, the bearing itself is not sealed. ldler roller has several layers of nylon sealing ring protection, sealing performance has been very good, so that bearing seal is not too useful.Open bearing facilitates the installation of their own before the actual situation to master the amount of lubricating oil filling.Open bearing has a certain price advantage than the sealed bearing. It is convenient to improve the market competitiveness of the idler roller and even conveyor.