HYTORC MXT+ Square-Drive Hydraulic Torque Wrench

The HYTORC MXT+ is a square-drive hydraulic torque wrench that can be set up three ways: with a side or coaxial reaction arm, with a rear reaction arm, or in reaction-free mode when used with the manufacturer washer or nut system. It combines the original MXT design with coaxial reaction drive, an auto-release feature and an embedded cycle counter, and the manufacturer states it is constructed from aircraft-grade aluminum for more than 5,000 duty cycles at maximum torque. Seven Star LLC quotes it for refinery turnarounds, pipeline flanges, power-plant casings and general heavy bolting.

Three bolting configurations on one wrench

Most square-drive wrenches need a rear reaction arm resting on a neighbouring nut or flange. The MXT+ adds coaxial and side reaction arms, so the arm can be turned to whichever position gives a stable reaction point, and the manufacturer lists an extensive range of fixtures: ALCO arm, track pad fixture, crab nut fixture, HYTORC Nut direct drive, hex direct drive and rotatable reaction arm. With a HYTORC Washer driver the tool becomes pinch-point free, because the reaction is taken by the washer under the nut. The auto-release feature removes the need to flip a lever to unlock the wrench from the application, and quick couplers with a locking mechanism prevent accidental disconnection of the hose.

Technical specifications

Models, torque range and dimensions

Values below come from the manufacturer extended cut sheet. The product page lists slightly different intermediate torque and weight values for some sizes, so the cut sheet figures are used here; always confirm against the torque chart supplied with the individual tool.

Choosing the MXT+ size and accessories

Select by square drive size, required torque and available reaction. The 3/4 in and 1 in models suit small and medium flange bolting, while the two 1-1/2 in models cover large studs up to 16468 Nm. Reaction-free work needs the washer or nut system, which in turn needs enough thread protrusion for the washer and the correct stud material, so plan these accessories at the same time as the wrench. The embedded cycle counter helps schedule maintenance, and the spline cover supplied with each tool protects the rear spline when drive reaction systems are used. A hydraulic pump with the correct pressure rating and a hose set are separate items.

How the HYTORC MXTP works

Hydraulic oil from the pump pushes a piston inside the wrench. The piston drives a ratchet that turns the square drive in small steps. Each stroke adds torque to the nut or bolt. A reaction arm presses on a fixed point and takes the opposite force, so the operator does not feel it.

Where the MXTP is used

• Refinery turnarounds
• Pipeline flanges
• Power-plant casings
• Heavy structural bolting
• General maintenance bolting

Selection checklist for the MXTP

• Model, MXTP-01, 03, 05 or 10
• Torque range needed
• Square drive size
• Reaction arm type
• Access space around the bolt
• Tool weight
• Angle measurement need
• Pump and hose

Installation, commissioning and maintenance notes for the MXTP

Connect the hoses with the quick couplers and check they lock. Fit the socket and the reaction arm. Set the pump pressure for the target torque. Make a test stroke on a spare bolt. Keep the couplers and the spline clean, and send the wrench for calibration on schedule.

Requesting a quotation for the HYTORC MXTP

Please send the bolt size, the torque value and the access space. Seven Star LLC serves industrial customers in Oman and the GCC and replies with a quotation based on the information provided.

MXTP models

The models are MXTP-01, MXTP-03, MXTP-05 and MXTP-10.

MXTP torque range

The torque range runs from 278 to 16468 Nm.

MXTP square drive

The square drive runs from 3/4 in to 1-1/2 in.

MXTP weight

The weight runs from 3.08 to 11.33 kg.

MXTP radius

The radius runs from 30 to 60 mm.

MXTP construction

The body is aircraft-grade aluminum, and the 01 model is steel.

MXTP reaction options

Options are side or coaxial, rear, and reaction-free with a HYTORC Washer or Nut.

MXTP auto-release

The auto-release removes the need to flip a lever to unlock the wrench.

MXTP cycle counter

An embedded cycle counter is built in.

MXTP quick couplers

Locking quick couplers prevent accidental hose disconnection.

MXTP angle measurement

Both indirect and direct angle of rotation can be measured.

Wrench records for the MXTP

Record the torque values, the cycle count and the date of each calibration.

Choosing the right MXTP model

Choose the model whose range holds the target torque in its middle, not at its limit.

Documents and quotation

The extended cut sheet is attached; the manufacturer also publishes an operations manual and torque charts for each size. For a quotation, send the stud diameter and grade, the target torque, the access clearance, and whether torque and angle control or ATEX equipment is needed. Related equipment is grouped under Material Handling and Lifting Equipment.