Page 60 - North American Clean Energy March April 2018 Issue

wind spotlight: tensioners and torque systems
Tensioners and Torque Syetems
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The proper alignment of a bolted joint can be achieved by using either torque or tension methods of bolting. Proper bolt loads must be realized during installation or the integrity of the joint will be compromised, leading to misalignment and, if left unchecked, the ultimate failure of the joint. In this issue, we look at some of the tensioners and torque systems available today.
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Torkworx, L.P.
Product: Multi-schedule Base Bolt Tensioner
Description: Multi-schedule Tensioning Systems can accommodate #9, #10, #11 75Ksi, and 90Ksi plus 1-1/4" and 1-3/8" 150Ksi Grade Base Bolt hardware.
Bolt Diameter: #9, #10, #11, 1-1/4”, and 1-3/8"
Stud Protrusion: 10" (254mm)
Max Stroke: 0.7" (18mm)
Max Load: 140,000lbs (622kN)
Hydraulic Pressure Area (in2) & (mm2):
6.74" (4350mm)
Outside tool diameter: 5.19" (132mm) Overall height: 8.74" (222mm)
Overall distance between stud CLs:
4.37" (111mm)
Weight: 25 lbs (11.38kg)
Key Features:
• Elliptical design fits very narrow
applications;
• Built in Stroke Limiting Valve - No over- stroking;
• Built in Cycle Counter for accurate usage tracking;
• Dual purpose aluminum handle serves as an ergonomic handle for moving the tool and protects the hydraulic connection from damage. In case of failure, the hose cannot eject from inside handle.
www.torkworx.com
ITH Engineering Product: ITH Bolt Tensioning Cylinder
Description: ITH bolt tensioning cylinders are designed for tightening large diameter bolts of all major OEM wind turbine applications including: foundation rods, tower bolts, bearing bolts, and more. High accuracy and repeatability ensures consistent even loads throughout bolted joints. Combine with the Micro- MAX pump for a lightweight and compact bolting system.
Bolt Diameter: M16 and larger Key Features:
• Designed with OEMs for all turbine applications;
• Lightweight and compact designs;
• Patented safety features;
• High load accuracy and repeatability;
• Fast operation using one or multiple tensioners simultaneously.
www.ith.com
Hydratight
Product: Elliptical Base Bolt Tensioner
Description: The Elliptical Base Bolt Tensioner eliminates any potential thread fit problems by utilizing the existing
hex nut on the stressing bar in order to induce the required load. The tool has a 20% reduction in width, which allows fit on all applications including the limited clearance inner bolts.
Bolt Diameter: #10 or #11 Williams or Dyson rebar (up to 1.5" diameter)
Stud Protrusion: 77" (1970mm) Max Stroke: 0.393" (10mm)
Max Load: 104,821lbf (466.3 kN) Hydraulic Pressure Area (in2) &
(mm2): 4.82" (3108mm)
Outside tool diameter: 32" x 55"
(820mm x 1420mm)
Overall height: 58" (1470mm)
Overall distance between stud CLs: 14" x 27" from stud center (380mm x 710mm)
Weight: 17.8lbs (8.1kg) www.hydratight.com
Alltite, Inc. Product: 700 bar tensioners
Description: Alltite has a full line of tensioners that operate at 10,000 psi / 700 bar for safety and speed. This tensioner can be operated from a hydraulic torque wrench pump, saving time and money.
www.alltite.com
TorcUP, Inc.
Product: VOLTA Battery-Powered
Torque Wrench
Description: The VOLTAs 18V lithium- ion re-chargeable battery provides enough power to take on hundreds of fastenings without the restrictions of cords or hoses. Its internal brushless technology delivers longer run-
time, extended durability and 100% repeatable accuracy. Additional features include digital display, torque memory settings, ft/lb to Nm conversion and more.
Power System: 18V lithium-ion re- chargeable battery
Drive Size: 3/4" and 1"
Torque: 120 ft/lbs to 3,000 ft/lbs;
175Nm to 4045Nm
RPM: 0.5 RPM @ min. torque; 20 RPM @ max. torque
Weight: 14.5lbs (6.6kg) based on the VT-1000 model
Noise Level: 82db www.torcup.com
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MARCH•APRIL2018 /// www.nacleanenergy.com