How should hydraulic wrenches be selected? This question (Emerson) must be
unknown to many people, so let’s study with the editor of Hydraulics today!

1. Confirmation of torque
Refer to the drawing requirements to find out what the torque value of the
bolt (composition: head and screw) is. [If you don’t know what the required bolt
torque is, please refer to the "bolt and nut maximum torque recommendation
table" according to the size of the bolt (nut) , Strength (strength) grade and
material quality] to get the corresponding torque value;
2. Considering the position of space (consider)
Due to many factors (limit) on site, please pay attention to the position
of the space used when choosing (xuanze) wrench, such as:
In case of the above working conditions, when the drive type cannot work,
you can choose (xuanze) hollow hydraulic wrench. The hydraulic wrench transmits
power to the working head through the high-pressure oil pipe and the hydraulic
pump, which drives the working head to tighten or loosen the nut. The hydraulic
pump can be driven by electricity or compressed air. The working head of the
hydraulic wrench is mainly composed of three parts, the frame (also called the
shell), the oil cylinder and the transmission parts. The output force of the oil
cylinder, the piston rod of the oil cylinder and the transmission part form a
motion pair. The distance from the center of the oil cylinder to the center of
the transmission component is the hydraulic wrench amplification arm. The oil
cylinder output multiplied by the arm is the theoretical output torque of the
hydraulic wrench. The actual output torque is smaller than the theoretical
output torque. Its unique (interpretation: unique, special) is that the wrench
can be divided into two parts: the working head part and the power head part.
The power of the same model remains unchanged. Within the working range (fàn
wéi) of this model, it can be passed ( tōng guò) Replace the working head to
realize the disassembly and assembly of bolts of different specifications
(composition: head and screw); in addition, a reducing sleeve can be added to
the working head to change the size of the opposite side to realize disassembly
and assembly of different specifications The selection of the hollow type
hydraulic torque wrench is the same as that of the drive type wrench in
principle.
Leseempfehlungen:
AN21-100/130/180/270 Pneumatischer Drehschrauber (ohne Abbildung)
DM31-013/016/030 Hydraulischer Magnetbohrer
pneumatische-balance-bohrer-9
Feste Klemmen
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