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Bolting Technology

ITH Bolting Technology, brand distributed in Italy by FRUSCA SRL, is a worldwide leader for the development and the supply of complete systems for the Tightening and Loosening of Industrial Bolted connections. ITH Bolting Tecnhology provides Bolt tensioning Cylinders, Hydraulic Torque Wrenches, Electric, Battery-Powered and Pneumatic Nut Runners, Electric and Pneumatic High Pressure Pump Units, Hand Lever High Pressure Pump Units, Testing and Controlling Systems and even more.

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The main application fields of the ITH tools are:

  • Energy Production – Gas, Steam and Hydraulic Turbines, Compressors, Wind Turbines, etc.
  • Petrochemical, Oil & Gas Industry – Reactor, Heat Exchanger, Ducts, Valves, Submarine Valves, etc.
  • Mechanical and Civil Construction Industry – Slewing Bearing, Hydraulic Press, Civil and Industrial Carpentries, Bridges, etc.
  • Power Engines, Power Transmission Components and Pumps – Diesel and Gas Engines, Gear Boxes and Multipliers, Joints, High Pressure Process Pumps, Volumetric Centrifugal Machines, etc.
  • Machines and Building Constructions – Wheeled and Tracked Excavators, Tower Cranes, Lifting Cranes, Beton Pumps, Road Layer Rollers, Paver Machines, Mixers, Dywidag Bars,  etc.
  • Steel Plants and Rolling Mills – Ladle Turrets, EAF/LF Furnaces, Foundation Bolting Connections, Stands and Columns of Rolling Mills.

BOLT TENSIONING CYLINDERS

The ITH Stretch-Method has been stated over time as the preferential tensioning process for many Industrial Applications. The technical and economical advantages of the ITH-Stretch-Method are proved by a long-standing partnerships to industry leaders from the energy sector (Turbine, Power Plant Construction, Wind energy), Oil and Gas Industry, Gas/Diesel Engine Construction, Heavy Machines and General Construction Projects.

  • SINGLE STAGE type ES: for radially open but vertical limited clearance applications. Patented safety features: cycle counter, safety handle and safety fracture device. For Bolted connections M16 (5/8") upwards.
  • MULTI STAGE type MS:  for vertically open but limited radial clearance applications Patented safety features: cycle counter, safety handle and safety fracture device. For Bolted connections M16 (5/8”) upwards.
  • SPECIAL TENSIONERS: large scale, type TWIN, type segment, type segment cylinder ring, realized on Customer’s specification.

HYDRAULIC NUTS TYPE HM

ITH Hydraulic Nuts can be used as a substitute for conventional Hexagon Nuts or Standard Round Nuts. The dimension are from M24 to M100 (7/8'' a 4'') with pretensionig force from 225 kN to 2750 kN. Are used on small amounts of Bolt Connections, once pretensioned remain on the Bolted Connection and can be easily loosened , when necessary, even after a long period. Especially useful in High Pressure Areas and for applications which are only accessible in Axial Direction. Further designs can be developed according to Customer’s needs.

TORQUE WRENCHES

The ITH Torque Wrenches work with the Torque or Torque-Angle Method. The 4 available types are: DRS, DKS, CX.e D-Flex. They can be equipped with a wide range of standard and/or customized inserts. The ITH Torque wrenches offer to the Customer flexible solutions for different applications. They are light, compact, with single-hose system (DRS, DKS) and can be used in areas difficult to reach. The CX and D-FLEX versions with double-hose system, thanks to their speed, flexibility and size, are especially indicated for operations on Bolted Connections which required reduced operation time and different dimensions.

  • DRS, for universal nut with power classes from 600 Nm to 80.000 Nm for the use in radially limited spaces. Ideal for the use on Varying Reaction Conditions.
  • DKS, to tighten or loosen industrial bolted connection up to 130.000N and for the use in radially limited spaces with constant and repetitive supporting conditions as for example: Flange Bolts, large Roller Bearings.
  • CX, with high speed operating system, compact, for universal nut with power classes up to 40.000Nm and for the use in radially limited spaces, in particular for overhead applications with Varying Reaction Conditions.
  • CX- ALPHA, as the previous one but with the control of the rotation angle that allows to obtain a more precise final result because is independent from the fiction effect.
  • D-FLEX, with High Speed Operating System, compact, for universal nut with power classes up to 40.000Nm, with interchangeable cassettes with reduced head radius and a quick change mechanism by hand between Cylinder and Cassette, without any extra tools required.
  • D-FLEX ALPHA, as the previous one but with the control of the Rotation Angle that allows to obtain a more precise final result because is independent from the Friction Effect.

NUT RUNNERS and MULTIPLIERS

ITH offers a wide range of Nut Runners, electric, Pneumatic, Battery Powered and Manually Multipliers, that work with the Toque Method and Torque-Angle: EDS, PDS, ADS and MDS.

  • EDS , Electric Drive, Power ratings up to 13.000 Nm, suitable for the use in series production, site activities on Wind Turbines and Great Works, Maintenance on Heavy Machinery.
  • EDS-ALPHA, as the previous one but with the control of the Rotation Angle that allows to obtain a more precise final result because is independent from the Friction Effect.
  • PDS, Pneumatic Drive, Power ratings up to 14.000 Nm, suitable for different applications in Atex areas as in Oil & Gas Industry, Heat Exchanger and Generic Applications where the Power supply is not available.
  • ADS, Powered with High Capacity and long-life Li-Ion Battery, Power ratings up to 6000 Nm, suitable for quick and flexible applications where the Power or Pneumatic supply is not available.
  • ADS-ALPHA, as the previous one but with the control of the Rotation Angle that allows to obtain a more precise final result because is independent from the Friction Effect.
  • MDS, Manual Torque Multiplier with Handheld Torque Wrench, Power classes up to 10.000 Nm.

HIGH PRESSURE HYDRAULIC AND HAND LEVER PUMPS

ITH develops and manufactures High Pressure Hydraulic and Hand Lever Pumps for the drive of its own equipments, for the Tightening and Loosening of Bolted Joints and are differentiated in two categories:  

FOR BOLT TENSIONING CYLINDERS and HYDRAULIC NUTS

  • Hydro-MAX – Powerful Electric Pump with Hydro-Booster, pressure ratings up to 3000 bar, for a fast pressure build-up during the Tensioning process.
  • Eco-MAX  - Electric High Pressure Hydraulic Pump, max. pressure 1500 bar, also for the use on site with current Generator.
  • Micro-MAX – Electric and Battery Powered Hydraulic Pump, Compact, max. pressure 1500bar, for Service and Maintenance Job.
  • Aero-MAX – Pneumatic Pump, pressure up to 4000bar.
  • Travel-MAX – Pneumatic Hydraulic Pump, max. pressure 2500bar, placed in a Transport Trolley for easy transport, suitable for Service Jobs.
  • Lever-MAX - High Pressure Hand Lever Pump, pressure up to 4000bar, compact and fast Handling, available in Standard and Mini version.

FOR TORQUE WRENCHES

  • Hydro-DAX 21 – strongest Electric Pump, for intensive and Fastest Bolting Procedures, used with dual-hose Torque Wrenches type CX and D-Flex.
  • Hydro-DAX 18 – Electric Pump, weight-optimized version for Service, Maintenance and Assembly Jobs used with dual-hose Torque Wrenches type CX and D-Flex.
  • Aero-DAX 19  Pneumatic Pump, for intensive and Fastest Bolting procedures used with dual-hose Torque Wrenches type CX and D-Flex. Suitable for the use in Atex areas.
  • DA 11 – Electric Pump, for intensive and Fastest Bolting procedures used with single-hose Torque Wrenches type DRS and DKS.
  • DA 8 – Electric Pump, weight-optimized version for Service, Maintenance and Assembly Jobs for single-hose Torque Wrenches type DRS and DKS.
  • DA 15 – Pneumatic Pump, for intensive and Fastest Bolting procedures for single-hose Torque Wrenches type DRS and DKS, suitable for the use in Atex areas.
  • DA16 – Hand Lever Pump, Compact and Fast Handling, for single-hose Torque Wrenches type DRS and DKS.

TESTING AND CONTROLLING SYSTEMS FOR BOLTING TOOLS

DIGITAL DOCUMENTATION PD /PSD
Automatic Control and Easy Documentation with the Digital Documentation System PD / PSD for ITH Bolt Tensioning Cylinders with saving and documenting of the obtained results.

MOBILE TEST STAND FOR BOLT TENSIONING CYLINDER
Mobile Test and Calibration Stand accredited by the German Accreditation Body DAkkS for the ITH Bolt Tensioning Cylinders from M20 to M72 (3/4” a 3”) , automatically generated Excel or PDF-files of the Test Datas.

MOBILE TEST STAND FOR TORQUE WRENCHES
Mobile Test and Calibration Stand for the Dynamic Torque, accredited by the German Accreditation Body DAkkS for all the Torque Wrenches from 600Nm to 45.000 Nm, in Robust Safety Housing, automatically generated Excel or PDF-files of the test datas.

MOBILE TEST FOR NUT RUNNERS
Mobile Test and Calibration Stand for the Dynamic Torque, accredited by the German Accreditation Body DAkkS, in two classes from 250Nm to 2.500Nm and from 500Nm to 6000 Nm, for all ITH Nut Runners types: Electric, Pneumatic and Battery Powered.

TORQUEMETER FOR NUT RUNNERS
Mobile Torquemeter, including integrated Battery and available Power Supply 110V or 230V, with clear Display of the Torque Values, ready for use on Bolted Connection, for Dynamic Check of the Torque Values and Torque Angles during the Bolting Process, Torque Measurable range from 125Nm to 6000Nm, accredited by the German Accreditation Body DAkkS.

ACCESSORIES

High Pressure Hose Lines, Nipples and Couplings, Distributors, Test Gauges.
Hand Lever Torque Wrenches, Inserts and Adapters of various sizes for all the model of Nut Runners and Torque Wrenches.  
Side Drives, Extensions, Standard and Special Reaction Arms for Nut Runners.

ITH FASTENING ELEMENTS: BOLTS, NUTS AND WASHERS

ITH, as worldwide leader in Bolting Technology, offers a wide range of Fasteners that includes Bolts, Nuts and Washers in different design and configurations.
BOLTS – with thread from M20 (3/4”) to W510 (510mm/20,078”) and larger, in various surface treatments such us Galvanic Process, Zinc Lamellar Coating, Hot Dip Galvanizing, PTFE and many more.

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