圈上泽文通大华 Common Types of Gears 圈上泽夫道大学 Spur Gear(直齿轮) These gears have teeth parallel to the axis of rotation and are used to transmit motion and power from one shaft to another parallel shaft. low cost for transmitting motion and power between parallel shafts. 口 Low cost to manufacture. 44 Common Types of Gears Spur Gear（直齿轮）  These gears have teeth parallel to the axis of rotation and are used to transmit motion and power from one shaft to another parallel shaft.  low cost for transmitting motion and power between parallel shafts.  Low cost to manufacture