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Tips for selecting hydraulic wrenches

Article Citations：本站 sentiment：Published time：2020-03-10 08:54:50

There are two series of hydraulic wrenches: drive type hydraulic wrenches and hollow type hydraulic wrenches. As the name suggests, the drive type hydraulic torque wrench is driven by the drive shaft to the corresponding specifications of the sleeve to achieve the pre-tightening of the nut, as long as the torque range allows, according to the replacement of the corresponding high strength of the sleeve to complete different specifications of bolts, as a general hydraulic wrench, a wide range of applications. Next small make up for you in detail about the purchase of hydraulic wrench knowledge, I hope to have some help for you.

According to the bolt specifications, there are generally several specifications, such as M36, M42, M48, if not how big the nut, is the metric bolt nut pair with the opposite side of the sleeve, M36 in the nut hexagon side is 55, M42 is 65, M48 is 75. If bolt specification span is too large, and torque span is large, then preload these bolts are bound to choose two types of spanner. According to bolt torque, remind: the specifications of the bolt, the bolt strength grade is the most key parameters on the selection of hydraulic torque wrench, bolt, torque is different, the same bolt strength grade different torque, the same bolt strength grade and different working condition of the torque is different also, used for rolling mill equipment and chemical equipment bolt torque is not the same, the general design drawings will give the torque size. A type of hydraulic wrench, can only solve a few similar bolts, generally with 1-10 sleeve; Conditional manufacturer had better be an electric pump with two wrench head use, diagonal use, can improve efficiency, torque more accurate; Hydraulic wrench must be used by special person, special person custody, regular maintenance, such as oil change, cleaning, etc. Bolt torque standards should be subject to the national standard, the national standard is in line with the national conditions of China.

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Tips for selecting hydraulic wrenches

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