The torsion shear type is specially used for screwing the shear bolts, and the electric wrench is selected according to the bolt standard; the high-precision fixed torque is mainly used in the occasion with torque requirements, and the electric wrench is selected according to the torque size; the impact electric wrench is cheap and efficient, but the torque accuracy is poor, so the electric wrench is selected according to the bolt standard.

一、看精度

1、 Look at the accuracy

精度高的扳手，会在达到预设扭矩时准确的停止旋转，特别是对拧紧精度要求高的法兰螺栓，建议使用高精度扳手，可以有效的避免走漏。德国的电动扳手一般精度为正负3%，为现在全球精度的扳手。

The wrench with high precision will stop rotating when the preset torque is reached. Especially for flange bolts with high tightening accuracy, it is recommended to use high-precision spanner to effectively avoid leakage. The general accuracy of German electric wrench is plus or minus 3%, which is the highest precision wrench in the world.

二、看扭矩

2、 Look at the torque

一般国内扭矩型扳手的扭矩可达10000牛米左右，而德国电动扳手的扭矩可达40000牛米。依据螺栓巨细和工艺要求，挑选适宜的扭矩规模。

Generally, the maximum torque of domestic torque wrench can reach about 10000 nm, while that of German electric wrench can reach 40000 nm. According to the bolt size and process requirements, select the appropriate torque scale.

三、看转速

3、 Look at the speed

转速直接决定了作业效率，转速快的扳手，能为操作者节约宝贵的作业时间。

Speed directly determines the efficiency of the operation. The wrench with fast speed can save valuable operation time for the operator.

四、看马达

4、 Look at the motor

现在的电动马达分为有刷和无刷两种。

Now electric motors are divided into two types: brush and brushless.

上面的内容就是今天小编给大家介绍的内容了，我们真诚为您提供电动扭矩扳手服务，您的满意就是我们的责任，欢迎在网站下方留言：

The above content is what we introduced to you today. We sincerely provide you with electric torque wrench service. Your satisfaction is our responsibility. Welcome to leave a message at the bottom of the website: