The square drive hydraulic torque wrench is one kind of hydraulic torque wrenches. Its drive shaft will drive the impact socket to achieve the pre-tightening of the nut, and is often used to tighten and remove bolts larger than one inch. Within a reasonable torque range, it can be matched with different high-strength sockets to act on bolts of different specifications. The square-drive hydraulic wrench is a general-purpose hydraulic wrench with a wider range of applications than the low profile hydraulic torque wrench.

TorcStark is a professional manufacturer of square-drive torque wrenches. We have full range of square-drive wrenches. All products are made of aluminum-titanium alloy and high-strength alloy steel. The one-piece fuselage can fully enhance the strength and toughness of the fuselage. It has longer service life, higher hardness and lower weight, and one power head can match a variety of working heads.

360°×180° rotating tubing joints are adopted, therefore no restrictions on operation space. Trigger-style lock, easy to press, you can freely set the 360° fine-tuning reaction arm on a solid fulcrum. There is no counteracting pawl to avoid tool jamming. Each stroke rotates 27°, and the speed is fast. Using precision ratchet, the accuracy is as high as ±3%. The small nose radius makes it easy to operate in a narrow space. Surface anti-corrosion treatment, suitable for use in harsh environments.

TorcSkark hydraulic square drive torque wrenches are widely used in electric power (nuclear power, wind power, hydropower, and thermal power), shipbuilding, metallurgy, transportation, cement, construction, aviation and other fields. We have won more and more customers with amazing product quality and cheap prices (TorcSkark is a manufacturer of square drive spanner. That avoids the dealers’ commissions to ensure your best price and highest profit.)

Now please tell us what you need, and TorcSkark will provide you with the perfect solution and best quotation.

Note: You can contact us via instant chat, email(, and form.

How to Operate Square Drive Hydrolic Wrench

Why you Should Choose Square Torque Wrench

Continuously ratcheting square torque wrench
Maximum torque 140,000Nm(103,700ft.lbs)
Max. Working pressure 70MPa(10,000psi)
Square drive 3/4”-4”
High repeatability, with accuracy +/-3%
Double acting, heavy duty type
360 degree reaction arm
Swivel hose connection 360X180 degree
Compact, high strength unibody construction
Hands free operation one way ratchet with easy release mechanism.
The tool is made out of Aero-grade high strength Aluminium titanium alloy.
The square drive have one-way ratchet mechanism.
The square drive have a locking arrangement with the tool with easy change over from tightening to loosening.
With carrying handle(for some bigger models)
The square drive have provision for locking the sockets with a dowel and o-ring (optional).
The reaction support is parallel to the axis of the bolt and reaction spline is provided in the square drive assembly.
The reaction arm can be adjustable in different angles / position in the entire 360 degree revolving periphery.


Square Drive Torque Wrench Application


A: We are the original manufacturer with more than 20,000sqm workshops, meanwhile a new 13,000sqm workshop is under construction.

A: If any customer wants a square drive hydraulic wrench, you’re kindly requested to provide necessary information as mentioned below:

  1. What is the maximum torque value you need?
  2. What are your bolt sizes? M39 M42 or else?
  3. What is the strength grade of the bolt? Usually it’s 10.9 or 8.8. If you don’t know the answer for Question 1, then this one is very necessary to answer.

With these details we will recommend you suitable model including wrench and socket.

A: Please show us the model number and picture of your old model, then we will recommend the similar.

A: We would recommend 3 stage electric pump EMP304 with high flow and high working efficiency.

A: In this case it is suggested that you just need drop us an email (ID: and our sales representative will guide you to fill in a questionnaire, with this form we will recommend the suitable model for you.

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