Hydraulic torque wrench

Alkitronic hydraulic torque wrenches serve tightening and loosening of bolts and nuts in heavy industrial environments, delivering torque from 60 Nm to 83000 Nm. The AT series such as H-AT-2, H-AT-3, H-AT-5 use square drive connections with standard sockets, while the AX series such as 70201, 70202, 70203 feature low-profile design combined with separate hexagon links. Operating pressure reaches 700 bar, swivel couplings rotate 360 degrees horizontally and 180 degrees vertically, aluminum alloy or aluminum-titanium alloy housings ensure high durability. The X-DRIVER and V-DRIVE series expand the application range with torque up to 83000 Nm. Authorized distributors guarantee clear origin and full warranty for all imported Alkitronic products.

Hydraulic torque wrenches serve tightening and loosening of bolts and nuts in industrial environments, especially when high torque and precision are required. This product range includes multiple series from Alkitronic, each addressing a different torque range and bolt size. Models such as H-AT-1, H-AT-2, H-AT-3 in the AT series use square drive socket connections, while the AX series such as 70201, 70202, 70203 feature low-profile design, combined with separate hexagon links.

Maximum operating pressure of these models typically reaches 700 bar, equivalent to 10000 psi. Hydraulic couplings on many models can rotate flexibly 360 degrees horizontally and 180 degrees vertically, facilitating operation in confined spaces. Housings are manufactured from aluminum alloy or aluminum-titanium alloy, ensuring high durability and light weight. The torque range spans from 60 Nm on 70201 to 83000 Nm on X-DRIVER, allowing selection appropriate to project scale and bolt size to be handled.

Classification by connection mechanism

The product range divides into two main mechanisms: square drive series and hexagon drive series. The square drive series uses standard sockets, while the hexagon drive series requires separate Hexagon Link or Ratchet Link accessories. This difference affects how accessories are selected and prepared before deployment.

The AT series includes H-AT-1 with 3/4 inch square drive and torque 110-1120 Nm, H-AT-2 with the same square drive size but torque 180-1840 Nm, H-AT-3 with 1 inch square drive torque 450-4510 Nm, H-AT-5 with 1.1/2 inch square drive torque 750-7530 Nm, H-AT-8 with 1.1/2 inch square drive torque 1080-10780 Nm. Larger models such as H-AT-10 torque 1550-15520 Nm, H-AT-20 torque 2660-26660 Nm, H-AT-25 torque 3470-34730 Nm, H-AT-35 torque 4860-48600 Nm, H-AT-50 torque 7200-72000 Nm all use 1.1/2 inch or 2.1/2 inch square drives. Square drives have pin holes to secure sockets, helping transmit force stably.

The AX series features low-profile design, including 70201 torque 60-770 Nm, 70202 torque 260-2600 Nm, 70203 torque 540-5400 Nm, 70204 torque 1150-11900 Nm, 70205 torque 2150-22900 Nm, 70206 torque 4450-49000 Nm. Each model requires a separate hexagon link, for example H-AX1-SW for 70201, H-AX2-SW for 70202, H-AX4-SW for 70203, H-AX8-SW for 70204, H-AX16-SW for 70205, H-AX32-SW for 70206. These hexagon links have fine-tooth ratchets, 28-degree swing arc, and reversing via a flip lever.

Torque range and corresponding applications

Torque range determines the ability to handle bolts of different sizes and tightening grades. Low torque suits small bolts or soft materials, high torque is for large bolts or tight clamping requirements in load-bearing structures. Selecting the correct torque range helps avoid thread damage and ensures joint reliability.

The group below 1000 Nm includes 70201 with 60-770 Nm and H-AT-1 with 110-1120 Nm, suitable for M8 to M16 bolts in light mechanical assembly. The 1000-5000 Nm group includes H-AT-2, H-AT-3, 70202, 70203, serving M20 to M36 bolts in medium industrial equipment. The 5000-15000 Nm group has H-AT-5, H-AT-8, 70204, H-AT-10, used for M42 to M64 bolts in steel structures, overhead cranes, turbines. The group above 15000 Nm such as H-AT-20, H-AT-25, H-AT-35, H-AT-50, 70205, 70206 handle M72 and larger bolts in power plants, oil and gas rigs, marine vessels.

The X-DRIVER series comprises 6 sizes from X-Driver 2 to X-Driver 64, covering torque 335-83000 Nm, allowing selection by power step. The V-DRIVE series provides interchangeable square drives, torque 265-65280 Nm, square drives from 3/4 inch to 2.1/2 inch, combined with X-Driver hydraulic units for flexible configuration. Pressure-to-torque conversion charts are attached to many models, enabling direct control of tightening force on site.

Notable technical features

Maximum operating pressure of 700 bar appears on most models, ensuring stable force transmission through hydraulic oil. Swivel couplings rotating 360 degrees horizontally and 180 degrees vertically on H-AT-3, H-AT-5, H-AT-20, H-AT-50 facilitate positioning in restricted spaces. Reaction feet rotating 360 degrees on H-AT-5 allow bracing against the nearest surface, reducing vibration during operation.

Aluminum alloy or aluminum-titanium alloy housings on H-AT-10, H-AT-35, H-AT-50 reduce weight, ease movement and maintain stability over long periods. Reversing rotation via flip lever to release square drive or hexagon link, no auxiliary tools needed. Fine-tooth ratchets on H-AX2-SW, H-AX4-SW, H-AX8-SW provide 28-degree swing arc, increasing torque precision and reducing the angle required per activation.

Accessories and supporting components

Hexagon Link and Ratchet Link play a key role for the AX series. Each AX size requires a corresponding hexagon link: H-AX1-SW covers 14-41 mm for 70201, H-AX2-SW covers 22-65 mm for 70202, H-AX4-SW covers 32-75 mm for 70203, H-AX8-SW covers 46-100 mm for 70204, H-AX16-SW covers 80-115 mm for 70205, H-AX32-SW covers 90-165 mm for 70206. Each hexagon link corresponds to a unique hexagon socket size, requiring a full set if working with multiple bolt sizes.

A-Drive hexagon cassettes support other models, including A-Drive 2, 73028- for A-Drive 4, A-Drive 8, 73050- for A-Drive 16. These cassettes meet industry standards, tightening and loosening large bolts in assembly clusters. Backup Wrench Handle provides a handle for the backup wrench, helping hold the bolt fixed when tightening the nut or vice versa, preventing rotation of the entire assembly.

Selection by working conditions

Confined spaces favor the low-profile AX series, as height is lower than the AT series. When bolts are close to walls, flanges or in machine recesses, 70201, 70202, 70203 are easier to access. If space is ample and quick socket changes are needed, the AT series with standard square drive is more convenient, requiring only a set of impact sockets.

High frequency of bolt size changes suits the AT series, as sockets change faster than hexagon links. If working with one or a few fixed sizes, the AX series combined with Ratchet Link delivers higher precision thanks to fine-tooth ratchets. Environments with strong vibration or frequent movement should choose models with aluminum-titanium alloy housings such as H-AT-10, H-AT-35, reducing hand fatigue and increasing housing lifespan.

When tight torque control is needed, prioritize models with attached pressure conversion charts such as H-AT-2, H-AT-3, enabling direct reading without consulting documentation. If portable hydraulic power is limited, choose lower torque models to reduce required oil flow. Conversely, large hydraulic power allows use of high torque models, shortening tightening time per bolt.

This product range addresses diverse needs from light mechanical assembly to heavy equipment maintenance. Proper combination of tool body, square drive or hexagon link, and suitable hydraulic power optimizes performance and workplace safety. Before deployment, clearly identify torque range, bolt size, working space and frequency of size changes to select the most appropriate model.