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来源: 日期:2022-12-29 发布人:wanzhong

What should be paid attention to when selecting torque wrenches?
1、 Look at the motor. At present, there are two kinds of electric motors: brushless motor and brushless motor.
What is a carbon brush? The brush motor is pushed on the surface of the phase converter inside. When the motor rotates, it transmits electric energy to the coil through the phase converter. Because its main component is carbon, it is called carbon brush, which is easy to wear. It shall be maintained and replaced regularly, and the carbon deposit shall be cleaned.
How does the brushless motor work? Brushless motor adopts electronic commutation, the coil does not move, and the magnetic pole rotates. Brushless motors use a set of electronic devices to sense the position of permanent magnet poles through Hall elements. According to this perception, electronic circuits are used to switch the direction of current in the coil at the right time to ensure that the magnetic force in the right direction is generated to drive the motor. The disadvantage of the brush motor is eliminated.
Although the brushless motor is a little expensive, it has a relatively high cost performance due to its extremely low failure rate and long service life.
2、 According to the torque, the maximum torque of domestic torque wrenches can reach about 10000 Nm, while that of German electric wrenches can reach 40000 Nm. Select appropriate torque range according to bolt size and process requirements.
3、 It depends on the speed. The speed directly determines the working efficiency. A wrench with fast speed can save valuable working time for the operator.
4、 The wrench with high accuracy will stop rotating accurately when the preset torque is reached. Especially for flange bolts with high requirements on tightening accuracy, it is recommended to use a high-precision wrench to effectively prevent leakage.
The above is a detailed introduction to the torque shear wrench. I hope it will be helpful to you. If you have any questions, please contact us. We will provide services for you with our attitude