An effective solution for high tightening torque

Rapid-Torc hydraulic torque wrenches were developed for the most demanding applications. They are an effective solution for applications requiring very high tightening torque. Atlas Copco has been delivering the Rapid-Torc brand worldwide since last year. The acquisition added products to the portfolio and opened a new market segment.

Rapid-Torc torque wrenches offer unique performance and high reliability. Users also like them for their safe handling, ergonomics, long life, and especially that the tools work on their own – they don’t even have to be held. All these features combined make Rapid-Torc tools absolutely unique. That’s one more reason why we decided to buy the company and include their products to extend our industrial tool portfolio.

Step-by-step tightening
Tightening is done by a hydraulic system. Oil pressure moves a piston in the tool forward, and a robust mechanism converts linear movement to rotation to turn the bolt. “Tightening isn’t continuous, but occurs in individual steps,” says Josef Grochovský, Product Manager at Atlas Copco. The worker controls a hydraulic pump, and at that moment it is important that the operator does not have to hold or support the tool. The tool has a mechanism that allows the operator to be out of reach of the bolt, and control the whole process from a safe, comfortable distance by pressing a control button. This prevents injury, which is common with similar tools when operators’ hands are pinched due to reaction forces. The Rapid-Torc solution is also good for bolts that are hard-to-reach due to their height or location, and when it would be physically demanding for the operator to support the tool.

The Rapid-Torc system consists of two parts, a pump and a tool. “The pumps differ depending on whether the motor is driven by electricity or compressed air, and also by power, which is compared by how much oil the pump can deliver per minute. Hydraulic pumps can be chosen by the size of the tool, by the tightening torque needed, and by the individual application conditions. The final tightening torque depends on the pressure we set at the pump,” adds Grochovský.

No need to hold the tool
Atlas Copco offers two lines of Rapid-Torc torque wrenches. RT Series have a square drive, on which the square, connected to a grooved interface, transfers the tool’s force to the joint to be tightened. This tool’s advantage is its universality, because the wrench has a broad range of tightening torque and the square drive can be connected to various sizes of industrial power sockets. This means that one tool can be used for various applications just by changing the socket and adjusting the pump pressure to change the tightening torque.

The other product line is the RTX series. Their advantage is their low height, and we also call them cassette tools. They are made up of two parts that are driven by an RTX head and an RL cassette that contains a hexagon of the required size. In many applications, there is not enough space above the bolt or nut to accommodate a square-drive tool. Here a cassette tool is the only alternative. These tools are also used where the nut is tightened on long bolts, because the bolt easily goes through the nut and the tool, and is not limited by the depth of the socket, as with a square-drive tool.

The Rapid-Torc system also offers many modifications for Inbus bolts, and simple modifications allow extension and changes in the way both RT and RTX tools are used. A wide assortment of accessories for any application is available for the tools and the entire system.

Rapid-Torc found a place in the Atlas Copco portfolio because it is a very modern, ingenious tool that meets the highest standards of quality and ergonomics. These are typical of all Atlas Copco products, and in today’s competitive environment, they are key factors in improving industrial productivity and quality. We expect its main application to be in producing and maintaining products equipped with flanges that are typical in energy, mining and raw materials extraction, and on machines that work with high volumes of materials at high temperatures or pressure.


More information on each model offered can be found at our website.


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