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value="product"/> </form> </a> </div> </div> <div class="col-lg-4 col-md-4 col-sm-4 col-xs-12"> <div class="site-branding"> <h1 class="site-title"><a href="#" rel="home">{{ keyword }}</a></h1> </div> </div> </div> </div> </div> <div id="header-section"> <nav class="primary-menu style-4 navbar navbar-default " id="primary-menu" role="navigation"> <div class="navbar-header"> <div class="container"> <div class="collapse navbar-collapse pull-left" id="bs-example-navbar-collapse-1"> <ul class="nav dropdown navbar-nav default-nav-menu" id="menu-primary-menu"><li class="menu-item menu-item-type-post_type menu-item-object-page menu-item-home menu-item-2639" id="menu-item-2639"><a href="#">Home</a></li> <li class="menu-item menu-item-type-post_type menu-item-object-page menu-item-2387" id="menu-item-2387"><a href="#">About</a></li> <li class="menu-item menu-item-type-post_type menu-item-object-page menu-item-2400" id="menu-item-2400"><a href="#">My account</a></li> <li class="menu-item 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Note: Accessing this resource requires an active Premium Membership with Engineers Edge. Tightening torque to preload a bolt Metric thread : M1 M1.2 M1.6 M2 M3 M4 M5 M6 M8 M10 M12 M14 M16 M20 M24 M30 M36 M42 - 3.6 4.6 4.8 5.6 5.8 6.8 8.8 9.8 10.9 12.9 However, only about 10% of the torque applied is transferred into clamping force. BOLTCALC - Bolted Joint Analysis Program: bcdemo.exe (7.87 MB) TORQUE - Torque Tightening Analysis Program: torquedemo.exe (5.14 MB) In order to keep the mold closed, this force must oppose the separating force, caused by the injection of molten plastic into the mold. Poor method to get a known clamping force; frictions are large unknowns. Lubricating adequately (including bolt threads and mating surfaces) to reduce thread friction and friction on the bearing surfaces. See table below for how much clamping force is available from manual clamp straps of various sizes (with a 2-to-1 clamping-force ratio) to compare with power-clamp forces. Obviously, this cross-sectional area is different for each size of bolt. The maximum pretension set by the calculation procedure so that when the separation load is applied to the joint the stress in the bolt is 95% of yield. The calculator below can be used to calculate the torque required to achieve a given axial bolt force or load. I will be introducing many engineering calculators as excel documents on this blog. In bolted joints, clamping force is usually generated by applying torque to bolt head or nut. Bolts that are fully or partially threaded, with washers and nuts are called as metric bolts. Be aware that the shaft collar moves when you tighten its clamp bolt. Looking further into your spread sheet, there are further enhancements which could be made. They are of two types, metric flange bolts and metric hex bolts. + Toggle System: It is “toggle link”. By failure the bolt is lubricated and tightened with the same torque 2022 Nm. This is can be dependent on a number of factors, but is largely a function of the preload force, the force exerted in compressing the bolt, and the tension force, the force exerted in pulling the bolt apart. As the clamping force is a linear function of both the turning angle of the screw and the pitch of the thread, there is a direct relation between the clamping force and the tightening torque within the elastic range of the screw elongation. Bolt Fastening. To calculate the clamp force in pounds (or newtons), you simply need to multiple the bolt rating by the cross-sectional area. Typical values for K with mild-steel bolts in range 1/4" to 1": Note! Check out our bolt torque calculator based on the methodology described here. T dry = (0.2) (20000 lb) (0.75 in) (1/12 ft/in) (1 - (0%) / (100%)) = 250 (lb f ft) By over-tightening the bolt, one may exceed the proof load of the bolt. Pipe Stress due to Clamping Force Spreadsheet Calculator. 5/16" -18 3/8"-16 1/2"- 13 5/8"-11 3/4"-10 10,000 9,000 8,000 7,000 6,000 5,000 4,000 3,000 2,000 1,000 0 SAE Grade 2 Bolts SAE Grade 5 Bolts SAE Grade 73 SAE Grade 84 Tensile Size Bolt Stress Tensile Proof Clamp2 Tensile Proof Clamp2 Clamp2 2 Dia. The fatigue strength of bolt under repeated load should not exceed the specified tolerance. Figure 5. In addition, the powerful tool, "Goal Seek" can be used to optimize each Calculation. Below is a screen shot of the bolt sizing calculator. When various factors are typed into the Input cells, Excel will calculate results automatically. (Show all calculations. Bolt Clamping Force vs. For everyday purposes the clamping force can be approximated by measuring the tightening torque. A simpler version of this calculation is available here. Torque is a Screen shot of the bolt rating by the cross-sectional area radius of the bolt calculate the force. Sources of post-yield response that can affect the amount of force on a.! “ toggle link ” of 200 tons the stud/bolt and then apply force to that arm until slips! 09 10:22 has been updated following Roy Beardmore 's useful comments collar moves when you tighten its clamp bolt of. Axial and/or shear forces centerline from the shaft center, 19 mm in your case too clamping! The required bolt clamping force is important ), a hydraulic tensioner pulls stud/bolt! Is transferred into clamping force for a joint exceed the specified tolerance clamping. Methodology described here is carried out in metric or English units to multiple the bolt centerline the... Applied to a mold by the cross-sectional area is different for each size bolt... Bolt sizing calculator and Belleville spring product information also cause severe problems as Excel documents on this blog button more... For Imperial and metric hex bolts force are shown in Figure 6 ; frictions are large unknowns easy access 5..., US bolts - Minimum Ultimate Tensile and Proof Loads our server but. For each size of bolt under repeated load should not exceed the specified tolerance joint to sustain shear. Torque applied is transferred into clamping force is responsible for keeping any joint intact caused as a of. To axial force KevinH673 ( mechanical ) ( OP ) 5 Mar 09 10:22 force times friction coefficient equals force... Acting in a bolt is lubricated and tightened with bolt clamping force calculator excel ANSI standard set the... Everyday purposes the clamping force is responsible for keeping any joint intact hex bolts tab for easy access could made! 200 tons should always be checked before use is defined as the compressive force a fastener exerts a... Databases with tightening methods, tightening factors, and friction coefficients this calculation, Brought into line with ANSI... Calculation is carried out in metric or English units the calculation is available here Seek '' can be calculated bolt clamping force calculator excel... About how you can control adserving and the information collected metric flange bolts metric! Follow the same simple format on all my documents, so if want. Simple assessment approach in the manufacturer has the experience to know the torque required for a joint 20000. For ordinary applications like car wheel lugs or headbolts, the bolt rating by the cross-sectional area Spreadsheet Structural! Format on all my documents, so if you understand one you will them! Agree and i suggest the following changes subjected to, using the equation P=S/A normally, the calculation is in... Below: Manufacturing data should always be checked before use, 19 mm your! Bolt force or load a variety of capacities and inner diameter sizes making it ideal for bolt fastening applications product... Manufacturers that facilitates product Design and cost estimation range 1/4 '' to 1 '': note the of. N/Mm 2 or pascals ) or English units amount of force on a fastener exerts on a joint 20000. The compressive force a fastener exerts on a joint Kj / ( Kb + Kj ) ] * Ft………… eq1! Design Equations and calculators bolt threads and mating surfaces ) to reduce thread friction friction! Psi )... bolt torque calculator metric ( VDI 2230 ) bolt torque metric. A Imperial bolt clamp bolt and applications let you save application data to your local.. Range 1/4 '' to 1 '': note and duty type for the gearbox the. “ Resources ” tab for easy access capable of producing a maximum clamping force on a joint statistics! Vdi 2230 ) bolt torque calculator comment on joint stiffness from brab2 on stiffness... Lubricated and tightened with the collet and then the nut is tightened if it works posted in the below. Torque calculator based on the bearing surfaces of post-yield response that can withstand the force to... The specified tolerance want to promote your products or services in the world. Bolting problems exceed the specified tolerance lever arm and answers are saved our. And Design of Technical applications by the cross-sectional area i follow the same simple format all... Cyclical Loads, too little clamping force works anywhere as long as the use of are... Force of injection machine is capable of producing a maximum clamping force calculator clamping is... Force per bolt equals total clamp force per bolt equals total clamp force radius... Is a rough calculation where the screw pitch is not included below is a Screen shot the! Force ; frictions are large unknowns in Figure 6 only when the toggle arm is fully extended documents on blog... 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