Tensioning gets the job done faster, better, and safer, thereby minimizing costs and downtime. Hydraulic bolt tensioning tools 1500 bar additions to standard range bolt diameters stroke hydraulic area max load tool outside dia min bolt pitch nearest obstruction inchmetric mm mm kn lbf mm mm mm 23b 158 4 178 2 15 6,320 948 2,118 144 97 99 100 101 200 23b m42 m45 m48 m52 15 6,320 948 2,118 144 97 99 100 102 200 29 178 15. Hydraulic hoses connect all of the tools to the air driven hydraulic pump unit enabling every bolt to be tensioned simultaneously. New square drive and low profile hydraulic torque wrenches. Bolting systems offers a comprehensive range of bolting tools, torque wrench pumps, continuousduty hydraulic pumps, nut splitters, flange pullers, bolt tensioners and bolting systems. When the hydraulic pressure is released, the stretch in the bolt. This concept of engineering innovation has been a part of ith since the beginning. In 1979 the founder of ith hans hohmann first introduced the bolt tensioning process to the gas and steam turbine industry.
The pst bolt tensioner is very simple to use and consists of four parts threaded puller, load cell, bridge and nut driver. Tentec ctst range of topside bolt tensioning tools comprises 6 base tools covering bolt sizes from 34 to 4 m20 to m100. Hytorc topside spring return tensioners hydraulic bolt. Using torque tools, such as nutrunners or hydraulic torque wrenches, you turn. Hytorc topside spring return tensioners hydraulic bolt tightening tools, hydraulic tensioning of bolts. The compact8 series is made from high strength stainless steel which. This pump was designed with maintenance technicians in mind. Hydraulic bolt tensioning tools and torque wrenches ith. Tensioning is very accurate as it applies a precise axial force. Increasingly we see that this is achieved using hydraulic bolt tensioners hydratight has been at the forefront of the development of bolt tensioning systems for 30 years, and weve been responsible for the extensive uptake of this technology across the world in the oil. In table 2 the measurement values are shown with residual load 1 tensioning 1 st pass. The ctst range of topside bolt tensioning tools comprises 6 base tools covering bolt sizes from 34 to 4 m20 to m100.
Here at htl group, you can find our fantastic collection of innovative and 100% british made bolt tensioning equipment. With our hydraulic rod tensioning system, designlimiting considerations, such as coefficient of friction due to torquing, are no longer a concern. The nordlock group is a world leader in bolting technologies and offers a wide product portfolio, including nordlock wedgelocking solutions, superbolt tensioners, boltight hydraulic tensioning and expander system. As a bolt is stretched, the nut will lift clear of the flange. The hy series of tension pumps are our latest design for the tensioning market. This stretchingelongation is maintained by the head of the bolt and the nut on the joint thereby maintaining the joint at the desired tension. Hydraulic nuts do not require a thread projection as bolt tensioners do and.
A broad range of hydraulic bolt tensioners designed for critical fastening applications. These improvements increase efficiency and enhance the tools load capabilities. Bolt tensioners can be removed from the bolt connection after pre tensioning. Designed for accurate, precise, and repeatable performance to save you time and money, riverhawks line of hydraulic bolt tensioners stand the test of real world applications exceeding expectations and leading the industry in quality.
When the tensioner is pressurized, the bolt is stetched and the the nut is turned by hand to retain the extension of the bolt. Tension using torque tools, such as nutrunners or hydraulic torque wrenches, you turn the nut. Afactors up to 1,05 according to german bolting guideline vdi 2230 the tightening factor. The industries hydratight serve have highlighted the need to apply accurate bolt loading in a controlled and safe manner.
Jan 31, 2014 the video describes the tightening process of bolt connections with the hydraulic, friction and torsionfree tensioning method. Cable sling tensioner for grouting of tg toto bolts used with all cable tensioners must be internally regulated for tensioners operating at lower than 10 000 psi. As the boltsafes start measuring from 101 kn the data also starts from 101 kn. Whats the difference between tensioning and torquing. The tensioners can be adjusted to fit different bolt lengths and for use in areas with limited space. Safe, reliable, and repeatable, the use of hydraulic tensioners offers many advantages over less accurate tightening methods. With a smaller footprint, hy series tension pumps are nearly 30 pounds lighter than most tension pumps on the market today. Boltight will design and manufacture a hydraulic bolt tensioning tool to solve your bolt tightening problem.
The torque setting for the tool translates into load on the connection. The spring return tensioner line offers the customer the same quality as our standard series, but incorporates a springreturn function and a more robust design. The bolt tensioners puller is then threaded down into each load cell until securely in contact with the cylinder piston. Hydraulic bolt tensioning cylinders hydraulic bolt tensioners hydraulic torque wrenches. Before operating tensioner, please read carefully with this tmanal, and understand its content and keep it. Hydraulic bolt tensioners a broad range of hydraulic bolt tensioners designed for critical fastening applications. High pressure hydraulic oil from a pump applies an accurate, axial load to the fastener. General description of the titan multi stage tensioner. When the hydraulic pressure is released, the stretch in the bolt the clamping force is retained. Our bolt tensioners suit a wide variety of industries, so whether you are looking for controlled bolting for accurate bolt measurements, to minimise diver fatigue with our subsea bolt tensioners, or you need an option when there is no power available with our hand tensioner. Bolting systems is the goto source for the latest hydraulic torque and tensioning technologies. Hydratight can also demonstrate that the bolt load calculations it uses have been independently verified.
Hydraulic bolt tensioning tools 1500 bar inch sizes metric sizes also available tool no bolt diameters stroke hydraulic area max load tool outside dia min bolt pitch nearest obstruction inches mm mm kn lbf mm mm mm 21 34 78 1 118 12 1,555 233 52,380 73 53 53 62 62 145 22 118 114 8 112 15 2,884 433 97,342 105 62 73 81 83 175. Internal tensioner wedge for tens27t and tens12t tensioner and superstrand cables internal tensioner wedge for tens2728 tensioner and tg bolt internal tensioner wedge for cram. Residual bolt load bolt stress x bolt tensile stress area units. A hydraulic tensioner system consists of an hydraulic actuator in combination with a tensioner pulley fig. A takes into account the scatter of the achievable assembly preload forces between fmmin and fmmax.
Hydraulic bolt tensioner instruction manual this manual is operating process, waring,caution and trouble shooting guide of bolt tensioner. Bolt tensioners are unsuitable for tightening very short bolts or for applications requiring bolt loads very close to yield. Once the system reaches a predetermined pressure, the operator uses a small bar to run the nut down by hand. Hydraulic bolt tensioning cylinders hydraulic bolt tensioners hydraulic. Hydraulic tensioning tools designed for the complete installation andor maintenance of different types of wind turbines. Subsea hydraulic bolt tensioner tentec compact 8 the compact8 range of subsea bolt tensioning tools brings a new generation of bolting solutions. Bolt tensioning hydraulic bolt tensioning equipment integra. Hti provides the finest method available to achieve proper bolt loading in critical connections hydraulic tensioning. Calculation notes on using hydraulic bolt tensioning tools.
Although many tools utilize torque to twist a bolt head or nut to effectively stretch the bolt, it is not accurate to say that a specific amount of torque will always yield a specific amount of tension in the bolt. Saving time and improving the accuracy, reliability, and repeatability of bolting any critical flange is. Boltight has been at the forefront of hydraulic bolt tensioning for over a decade. As the stud bolt stretches, the predrilled standard nut lifts from the flange surface. This is accomplished using a pulling or pushing force which is created by a hydraulic cylinder.
Power plant heaters installed with a telescopic hydraulic gantry. The het is the standard tensioning solution for applications where the bolted joint has a minimum of one stud diameter thread length exposed above the nut. The bolt load is retained in each bolt by inserting a tommy bar through the aquajack bridge window, into the. Tentec tensioners topside bolt tensioning tools torkworx.
Our hydraulic rod tensioning system is a patented enhancement of our line of standard hydraulic nuts and tensioners, which already offer the industry versatility, flexibility and modular design. Hydraulic bolt tensioning technology provides the highest level of accuracy, productivity, and safety on critical joints across the energy industry. A hydraulic bolt tensioning tool provides a quick and easy method for tightening large diameter bolts to high and accurate preloads. Bolt load measurement report tensioning versus torque. Tristar hydraulic stud bolt tensioners are designed to directly stretch the bolt by applying a known load to the bolt using a hydraulic cylinder and. Hydraulic nuts are a permanent form of bolt tensioning where the hydraulic nut replaces the conventional hexagon or round nut. Clean flanges and check for scars on the flange surface area. Features like spring or hydraulic piston return, positive piston stop, captive socket and quick release bridges can be custom built into any tools more than 50% of the tooling sold by boltight is custom designed and built. Unlike conventional methods it does not use torque and does not require any forceful turning of the nut or bolt, like impact wrenches, flogging spanners or hydraulic torque wrenches. In order to prevent leakage from bolted joints, metalock uses the most secure bolt tensioning methods. Hydraulic bolt tensioner ctst topside the ctst range of topside bolt tensioning tools comprises 6 base tools covering bolt sizes from 34 to 4 0 wr 0 7kh wrrov duh ghvljqhg wr. Increasingly we see that this is achieved using hydraulic bolt tensioners. The pressure equipment covered by this operating manual is a multistage hydraulic bolt tensioning tool. Each base tool can be converted for use with different bolt sizes using a conversion kit.
Our tensioning tools provide fast, accurate and safe solutions to tighten and loosen multiple bolts simultaneously. Comprising just 8 bolt tensioning tools, the compact8 series is capable of tensioning most standard anges and compact anges. The torque wrench is more suited to such application and is the preferred method of breaking out, particularly for the removal of nuts from corroded bolts. Apr 25, 20 the objective of tensioning is to stretch the bolt, or stud, to a predetermined load, by using force to elongate the shank. Hydraulic bolt tensioners a broad range of hydraulic bolt tensioners designed for critical fastening applications new epulse pumps deliver higher flow, convenience and durability.
Single clamps or small clamps for opening and closing reactor pressure vessels or other primary circuit components. Replacing the original hex nut, the hydranut is a selfcontained single tensioning unit that remains on the flange during operation. Bolt tensioning hydraulic bolt tensioning equipment. The tensioners can be adjusted to fit different bolt. Jul 05, 2016 driven by safety, quality and technical integrity, our hydraulic bolt tensioning tools are designed to assist our clients to increase productivity, reduces production down time, and significantly. Bolt tensioning ancillary equipment hydraulic wrenches pumps. Residual load 1 tensioning 1 st pass the target bolting force was 460 kn. Safe, reliable, and repeatable, the use of hydraulic tensioners offers. Bolt tensioning services hydraulic bolt tensioning. The ctst range of topside bolt tensioning tools from tentec consist of 6 base tools covering bolt sizes from 34. Relocating a 70 ton press with a hydraulic gantry reduces downtime. As a specialist for the design, construction, supply and maintenance of highly automated bolt tensioning systems, we offer our customers demandoriented solutions for opening.
Bolt tensioners and bolt tensioning cylinders from the worldwide market leader in hydraulic tensioning. We have many years of experience of bolted joint assembly and we are more than happy to help you choose the right method and equipment for your plants needs. In general, the hydraulic tensioner units need more engine space. For the majority of applications, we recommend hydraulic mutestud tensioning. An access window in the tensioner bridge allows the nut to be turned down to the joint surface with little or no friction. Our hydraulic external tensioner operates at a maximum pressure of 21,750 psi and utilizes high strength alloy steel components for long lasting performance. Tensioning solutions hydratights extensive line of tensioners are suitable for either topside or subsea applications. Read all safety instructions in the manual before usage. The hydranut bolt tensioning system consists of the hydranut, hydraulic pumping unit, and hoses. Unlike other manufacturers, hydratight takes all factors, including temperature into consideration, when it makes its calculations.
Hydraulic bolt tensioners have a footprint and thread height requirement. Hydratight has been at the forefront of the development of bolt tensioning systems for 30 years, and weve been responsible for the extensive uptake of this technology across the world in the oil and gas and power generation markets. Hydrocam specific hydraulic bolt tensioners pdf 201. Hydraulic body using the fluid under pressure, the hydraulic body creates the tension load on the brace by pushing on the skirt fig. Integra technologies is purposefully dedicated to meeting the industrys needs as tensioning specialists by providing the proper tooling for each individual. Our tools are available through sales, rental, or with onsite technical support. The movement of the piston rod of the actuator is transmitted to the tensioner pulley via an integrated or separate lever. With application of hydraulic pressure to the hydraulic nuts, bolt load is generated effortlessly and the user needs only to insert easily fitted shims to retain the bolt load. Boltights standard range of hydraulic bolt tensioners are designed for general use on top side applications.
We offer an extensive line of hydraulic bolt tensioners, hydraulic pumps and hydraulic nuts to meet your needs. The true strength of a bolted connection comes from the tension or clamping force developed in the bolts through tightening. Function of a bolt tensioner ssv pg 3 in simplified representation. Undecking an electric rope shovel in a copper mine with a jackup system. Assembly of hydraulic bolt tensioners is started by sliding the hydraulic load cell over the stud bolt until it comes in contact with the flange. Hydraulic bolt tensioning pump part identifier 1 stainless steel frame 2 oil outlet, female quick release coupling 3 pressure release valve 4 onoff valve 5 pump unit 6 oil resovoir 7 filler cap 8 air inlet 9 air pressure gauge 10 air regulator 11 pressure gauge torcup inc 1025 conroy place easton, pa 18040 usa telephone.
January 2006 tips on bolt tensioning calculation notes on using hydraulic bolt tensioning tools. Hytorc hydraulic tensioners bolt tensioners hydraulic. Ith bolting technology is the worldwide market leader for hydraulic, friction and torsionfree bolt tensioning ith stretch method. Bolt tensioning a bolt and nut are designed to act together as the internal threaded fastener nut is tightened onto the externally threaded fastener bolt. Additionally, the change of workrelated injury is dramatically reduced during flange makeup or breakout. A predetermined hydraulic pressure is applied to the system, thus stretching the stud bolt as the aquajack piston pushes against the reaction nut.
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