Too much clamping force can also cause severe problems. Torque window, displays torque and defines coefficient of friction Load Graph window, displays bolt stress over a 3 stage time period BTS TAKES THE COMPLEXITY OUT OF BOLT TIGHTENING CALCULATION. About this Calculator What is it for? Bolt Torque Calculator; US Bolts - Tensile Strength and Proof Loads ; Proof Load. 5) Calculate torsional shear force (Fm) Selecting “Auto Spacer” from the Spacer drop down menu, allows the software to calculate a suitable spacer thick-ness based on a target Load Transfer Factor (Note the lowest LTF when using bolt tensioning tools is 1.15). The load will vary for each bolt. Bolt Torque Calculator. See also this calculator and this table. Date :-01.01.2003. Clamp load (lb.) With too little clamping force, the joint may loosen. Actually what I do not understand in ASME is that the bolt load used for design seems different from the true bolt load (as the one I describe just above). joined by a bolted joint. The lower calculation table considers simulaneous axial (Fa) and shear … 2. 2. The bearing resistance of the bolt F b,Rd should be verified against the applied shear load F v,Ed in accordance with EN1993-1-8 Table 3.4: Accuracy. The Bolt load loss is a direct loss of stud elongation, this is due to many different factors, such as thread deflections, radial expansion of the nut and ‘bedding in’ of Pb = Bolt axial load resulting from yield, ultimate or joint separation load V = Bolt shear load resulting from limit load ... the calculation of the maximum and minimum preloads: (a) The maximum and minimum torques of the specified torque-range plus any prevailing torque (Tmax, Tmin and Tp). Caution. The calculator is generic an can used for imperial and metric units as long as the use of units are consistent. This calculator can be used as an aid to help estimate the weight of bolts, nuts, and washers. Bolt Load Calculator Please note that the above data is based on bolts lubricated to manufacturer’s spec. Tension elements: Elongation due to axial load Calculator: Calculates elongation (as well as stress and strain) for prismatic elements subject to axial force.. Wood tension element capacity Calculator: Calculates capacity of a wood tension element based on allowable tension on net area (reduced by bolt holes) and, if desired, row and group tear-out. The A t = Tensile Shear Area of Bolt S p = Proof Load of Bolt (or some percentage less than 100% of yield load of bolt, typically 85 % of yield S y) c = 0.75 For connections requiring reuse c = 0.89 For permanent connections . Load Calculator Quickly find the tensile, yield, proof, and estimated shear strengths of your bolts. Tensile Capacity at 195N/mm. BOLT LOAD CAPACITY TABLES TO BS5950 PART 1, 2000 THE ULTIMATE LIMIT STATE (ie FACTORED APPLIED LOADS) GRADE 4.6 BOLTS In Grade 43, bearing capacity = 460N/mm, for e 2d. Step 1 - Enter Information. Values calculated using industry accepted formula T = KDP where T = Torque, K = torque coefficient (dimensionless), D = nominal diameter (inches), P = bolt clamp load, lb. Definition of the algorithm Both lateral (single and double shear) and withdrawal capacities can be determined. The calculator below can be used to calculate the torque required to achieve a given axial bolt force or load. If you're looking for the next big thing, FUTEK has a library of over 100 new and innovative ideas to incorporate its load cells, force transducer, torque sensors, pressure sensors, and multi-axis sensors. Shear Capacity at 160N/mm THREADS IN SHEAR PLANE. The preferred bolt preload for structural applications should be at least 75% of the fastener's proof load for the higher strength fasteners and as high as 90% of the proof load for permanent fasteners. If the joint is exposed to cyclical loads, too little clamping force can shorten the bolt’s fatigue life. That figure is about right for a low tensile bolt. Proper amount of tensioning of the bolts is vital. But also the possibility to make a request for a special tensioner or enquire about your selections directly in the app. Bolt Load Calculation Software Hydratight introduces Informate: the next generation of software that provides bolt loads and tool pressures on a huge range of flanged joints and clamped connections. Learn More. This uses the equations from ANSI B1 1-1974 and B18.3.1-1978 which calculates the area carrying the tensile load from the mean of the pitch diameter and the minor diameter. Some notes from ISO 898 metric screw threads standards: from precision medical instruments to high-performance robotic solutions, FUTEK products are designed to work in the most demanding environments — even on Mars. in.) BoltUP - Our online bolt load calculator; Informate - Our advanced calculation and procedure software; IDMS Integrity Data Management System - The complete package for managing Bolted Joints from cradle to grave. Higher or lower values of clamp load can be used depending on the application require- As a reality check if we approximate to a cross sectional area of 7 mm 2 and a load of 1000 N that gives a tensile stress of 140 MPa which is below yield even for low tensile steels.. Of load-extension diagrams and scale drawings or initial load in tension on bolt proof load Calculator. All data in only one dialogue window proper amount of tensioning of preloading. Input provides input of all data in only one dialogue window as an aid help! 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