our company produce high quality deep groove ball bearing. Their structure are simple and convient to use.The bearings are primarilu to carry radial loads, and also capable of carrying combination loads in radial and axial directions.This type of bearings have lower friction coefficient,higher limiting speed.But they are not suitable for carrying shock and heavy loads.our deep grooce ball bearings are as following:d=150mm-1320mm D=210mm-1720mm H=28mm-128mm