HYTORC EDGE S Square-Drive Hydraulic Torque Wrench

The HYTORC EDGE S is the workhorse square-drive hydraulic torque wrench of the HYTORC range, intended for general maintenance bolting that needs high torque and repeatable results at a lower cost than the premium wrenches. The cut sheet states that the straightforward three-moving-part design was created by HYTORC more than 30 years ago and has been improved continuously. It is offered in five sizes from EDGE-1S to EDGE-11S, covering 241 to 15304 Nm.

Simple mechanism, easy to maintain

With only three moving parts the EDGE S reduces maintenance and operating cost. Switching between tightening and loosening is done by moving the removable square drive to the other side of the tool, and the adjustable safety handle can be mounted on either side of the wrench for a more comfortable grip. The 360 by 180 degree uniswivel stops hoses from tangling, which is a practical benefit on flanges with many bolts. The tool does not include a lock-on release, auto pressure release or cycle counter, so it is best matched to routine maintenance and shutdown work where data capture is not required.

Technical specifications

Models, torque and weights

Figures are from the manufacturer cut sheet of 2025. The product page shows the same ranges with small rounding differences; the cut sheet is used here.

How to specify an EDGE S wrench

Choose the square drive from the socket size and the torque from the joint calculation, then keep the working torque inside the middle of the model range. Compare the radius and height shown on the cut sheet with the nut spacing and the space around the joint; if the free space is tight, a low-clearance cassette tool such as the VERSA or STEALTH may be a better fit. ALCO arms and hex drives are available as reaction accessories, and a separate pump and hose set is required. Request the torque chart for the exact tool, because the pressure to torque relationship is specific to each model. For long-term jobs, keep the calibration certificate with the tool, record the pump pressure used for each bolt, and inspect hoses and couplers before each shift; the simple mechanism makes routine checks quick, but a worn hose or a damaged coupler will still affect safety and repeatability.

How the HYTORC EDGE-S works

The EDGE-S is a hydraulic torque wrench. A hand or electric pump sends oil to the tool, and the oil pushes a piston. The piston turns a ratchet and the square drive in small steps, and each step adds torque to the nut or bolt. Torque follows the oil pressure, so the pump gauge setting decides the torque. The removable square drive moves to the other side of the tool to change between tightening and loosening.

Where the EDGE-S is used

• Flange bolting on pipework
• Pump and compressor maintenance
• Shutdown and turnaround work
• Structural steel connections
• Wind and power plant bolting

Selection checklist for the EDGE-S

• Required torque in Nm
• Model from EDGE-1S to EDGE-11S
• Square drive size: 3/4, 1 or 1-1/2 inch
• Space around the nut, height and radius
• Tool weight for hand handling
• Pump type and hose set
• Hex drives and reaction arms
• Need for data capture, which this tool does not offer

Installation, commissioning and maintenance notes for the EDGE-S

Check the nut size and the reaction point before you start. Connect the hoses, bleed the air, set the pump pressure from the torque chart and keep hands clear of the reaction arm. Work in a star pattern on flanges. Inspect the hoses and couplings for wear and keep the tool clean and lightly oiled.

Requesting a quotation for the HYTORC EDGE-S

Please send the torque range, the drive size, the pump type and the quantity. Seven Star LLC serves industrial customers in Oman and the GCC and replies with a quotation based on the information provided.

EDGE-S torque range

The five sizes cover 241 to 15304 Nm, or 178 to 11,291 ft-lbs.

EDGE-S design

The design has only three moving parts, which keeps service simple.

EDGE-S hose connection

The 360 by 180 degree uniswivel stops hoses from tangling on crowded flanges.

EDGE-S handle

The adjustable safety handle can be fitted on either side of the wrench.

EDGE-S sizes and weights

The EDGE-1S weighs 1.84 kg and the EDGE-11S weighs 11.36 kg.

Tool records for the EDGE-S

Keep the serial number, the pressure used and the date of each service.

Choosing the right EDGE-S size

Choose the size so that the bolt torque sits well inside the range of the tool.

EDGE-S accessories

ALCO reaction arms and hex drives are listed as accessories for the range.

EDGE-S documents

A cut sheet, a manual, torque charts and a hydraulic oil safety data sheet are listed for the range.

EDGE-S square drives

Square drive sizes are 3/4 inch, 1 inch and 1-1/2 inch across the five models.

Documents and quotation

The EDGE S cut sheet is attached. To quote, Seven Star LLC needs the bolt size, target torque, drive size, reaction method and the pump available on site. See the wider Material Handling and Lifting Equipment section for related equipment.