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Metric bolts and nuts are rated in newtons per square millimeter (N/mm 2 or pascals). *Clean, dry clamping stud torqued to approximately 33% of its 100,000 psi yield strength (2:1 lever ratio). The fatigue strength of bolt under repeated load should not exceed the specified tolerance. (This helps reduce the standard deviation among the results) Applying torque with a calibrated torque wrench; Measuring what the clamping force on the flange would be by measuring the preload of the fastener by Skype or Google use cookies for serving our ads and handling visitor statistics. by Skype or The required bolt clamping force for a joint is 20000 lbs. Preload Values. Calculating a bolt’s clamping force. In the real world (when clamping force is important) ,a hydraulic tensioner pulls the stud/bolt and then the nut is tightened. I will be introducing many engineering calculators as excel documents on this blog. The torque required for a 3/4" dry steel bolt with 0% lubrication to achieve this tension can be calculated as. It is force to keep mold closed when injection machine push molten plastics in to injection mold. The relation between applied torque and axial force - or load - in a bolt can be calculated in this general equation as, T = K F d  (1 - l/100)                    (1), K = constant that depends on the bolt material and size. Kb – bolt spring rate. In the real world (when clamping force is important) ,a hydraulic tensioner pulls the stud/bolt and then the nut is tightened. In addition, the powerful tool, "Goal Seek" can be used to optimize each Calculation. (Show all calculations. If the joint is exposed to cyclical loads, too little clamping force can shorten the bolt's fatigue life. Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your Sketchup model with the Engineering ToolBox - SketchUp Extension - enabled for use with the amazing, fun and free SketchUp Make and SketchUp Pro .Add the Engineering ToolBox extension to your SketchUp from the SketchUp Pro Sketchup Extension Warehouse! Clamping Force Calculator Clamping force refers to the force applied to a mold by the clamping unit of an injection molding machine. 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. 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. When various factors are typed into the Input cells, Excel will calculate results automatically. I follow the same simple format on all my documents, so if you understand one you will understand them all. The clamping force on a bolt is defined as the compressive force a fastener exerts on a joint. Figure 5. See the instructions within the documentation for more details on performing this analysis. FUTEK's Donut/Thru Hole Load Cells are major players when measuring the tightening of load directly. Using a torque calculator to determine the approximate tightening torque is a good place to start. In addition, the powerful tool, "Goal Seek" can be used to optimize each Calculation. T dry = (0.2) (20000 lb) (0.75 in) (1/12 ft/in) (1 - (0%) / (100%)) = 250 (lb f ft) Metric Bolts - Minimum Ultimate Tensile and Proof Loads, US Bolts - Tensile Strength and Proof Loads. Bolt torque calculator for the calculation of tightening torque and preload for bolts. Please read Google Privacy & Terms for more information about how you can control adserving and the information collected. Since bolt holes could have sharp edges or burrs, washers are used to protect the fillet under the bolt head from scratching since this is a critical area that is prone to failure. Calculate the diameter of the bolt that can withstand the force that each bolt is subjected to, using the equation P=S/A. Purpose of calculation: Determine force distribution in a bolted joint.Calculation ReferenceMachine Design JuvinallScahum's Machine Designhttp://www.mech.uwa.edu.au/DANotes/threads/mechanics/mechanics.htmlhttp://em-ntserver.unl.edu/Negahban/em223/note16/note16.htmhttp://en.wikipedia.org/wiki/Bolted_jointhttp://www.boltscience.com/Use 'Torque Pretension' worksheet also consult with the following referenceshttp://www.roymech.co.uk/Useful_Tables/Screws/Preloading.html#Initial_Bolt_Tensionhttp://www.roymech.co.uk/Useful_Tables/Screws/Screw_loads.htmlCalculation Validationhttp://ocw.mit.edu/OcwWeb/Mechanical-Engineering/2-007Spring-2005/Tools/detail/spreadsheet.htm1) Material and basic geometry geometryYoung's modulus of boltPoisson ratio of boltYoung's modulus of clamped platePoisson ratio of clamped plateupper clamped plate thicknesslower clamped plate thicknesstotal clamped plate thickness2) Bolting detailsbolt diameterbolt thread root diameterbolt clearance holebolt head diameter(note: could be increased using a flanged headed bolt or a washer)thickness of bolt headnut thickness(note: enter 0 if threaded into flange)bolt length assumed equal total clamped plate thickness + hnut3) Torque Tightening and Bolt PreLoad CalculationMethod of torque tightening determines accuracy of bolt preload obtained.It is not unusual to increase bolt size because the torque tightening method cannot guarentee a minimum preload.The effects of the torque tightening method are shown on the joint diagram below.Variation in preload (+ and -)Tightening Torque (to yield bolt see Eqn. T dry = (0.2) (20000 lb) (0.75 in) = 3000 (in lb) = 3000 (in lb) / 12 (in/ft) = 250 (ft lb) The clamping force on a bolt is defined as the compressive force a fastener exerts on a joint. Very interesting Roy. 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 required bolt clamping force for a joint is 20000 lbs. They are of two types, metric flange bolts and metric hex bolts. Bolt Science - Information related to bolted joints. Step-by-step illustrated examples show how to use the spread sheet tools to optimize bolted joint designs. Pipe Stress due to Clamping Force Spreadsheet Calculator. The force acting in the lubricated bolt can be calculated as, Flubricated = (2022 Nm) / (0.2 (0.03 m) (1 - (40%) / (100%))). The clamping force on a bolt is defined as the compressive force a fastener exerts on a joint. Solon Manufacturing's resource library is filled with high-quality industrial pressure switch and Belleville spring product information. clamping energy shown on the torque-angle plot has the same value as the areas under the bolt and clamped component lines in the Force-Deformation Diagram (refer to Figure 9). Most accurate bolt torque calculator given its geometry and thread diameter, using vdi 2230 standard, Screw Clearance through the specific tool 3D model. Contact us today. Typical Metric and Imperial bolt torques are indicated in the links below: Manufacturing data should always be checked before use. Obviously, this cross-sectional area is different for each size of bolt. For everyday purposes the clamping force can be approximated by measuring the tightening torque. In addition the accuracy of a torque wrench is normally no better than +-25%. Then you calculate (I think) the needed clamping torque of the clamp on rod 2, by equating it to the torque applied by a 50 lb force on rod 1. Be aware that the shaft collar moves when you tighten its clamp bolt. Bolt Clamping Force vs. When various factors are typed into the Input cells, Excel will calculate results automatically. Typical metric and imperial bolyt torques. - be aware that this is a rough calculation where the screw pitch is not included. Where, Kj – joint spring rate. Then you calculate (I think) the needed clamping torque of the clamp on rod 2, by equating it to the torque applied by a 50 lb force on rod 1. With the ANSI standard set, the calculation is performed in English units, with corresponding bolt dimensions also included. Calculation ReferenceHandbook of bolts and bolted joints American Machinists' Handbook and Dictionary of Shop Terms Basic Principles for Construction, Cengage Learning Machinery's Handbook, US +1 617 5008224 I am curious, why do you need to calculate the force? Example - Required torque for tightening a Imperial bolt. Both axial and shear forces, acting individually, or simultaneously, can be taken into account, together with any residual clamp force that may be required to … BOLTCALC - Bolted Joint Analysis Program: bcdemo.exe (7.87 MB) TORQUE - Torque Tightening Analysis Program: torquedemo.exe (5.14 MB) Learn about the process cycle and design for manufacturing (DFM) guidelines for a wide range of manufacturing processes, including injection molding, metal casting, machining (milling and turning), and rapid prototyping. The proof load for a M30 metric bolt grad 8.8 is 337000 N. The torque required to achieve this force with a dry bolt is calculated to 2022 Nm. See the reference section … 37)Bolt head dimension across flatsThread pitchouter thread radiusinner thread radiusmean thread radiusEffective radius of rubbing surface against which head/nut bearsCoefficient of friction between screw and nut threadCoefficient of friction at head/nut bearing collarThread Lead (equals thread pitch for single thread screws)Angle of thread at mean radiusThread angle at bearing surfaceAngle between tangent to tooth profile (on the loaded side) and a radial lineThread ConstantBolt preload (load parallel to screw axis)Efficiency of the screw mechanism (ratio of useful work out to work in)Torque to stretch BoltThread Torque (torsional load in the bolt to stretch the bolt and overcome thread friction)Torque to overcome thread frictionTorque to overcome collar frictionJoint pretension constants to compare with other threadsTypical K factors for comparison purposesSteel Thread Condition0.30 as received, stainless on mild or alloy 0.20 as received, mild or alloy on same0.16 cadmium plated0.14 molybdenum-disulphide grease0.12 PTFE lubricationOff Torque - torque required to loosen the nut (if negative then torque needs to be applied to hold nut still)Bolt Pretension and material propertiesBolt ultimate tensile strengthBolt yield stressForce on joint at which bolt yields (ignoring torsional effects)% of bolt yield stress used by bolt preload4) Stiffness of tensile loadpathTensile stiffness of a bolt shaftShear stiffness of a bolt headShear stiffness of a nutTotal stiffness of bolt5) Stiffness of compressive loadpathcone angle (normally 45° dispersion from bolt head/nut)Compressive stiffness of clamped plates (in series)Shear stiffness of clamped platesTotal stiffness of all compressive loadpath elements under bolt6) Calculate Basic Joint ForcesForce in bolt when preload is lost (joint separates and contact force between clamped plates = 0)Fbreak/Fleak: resulting safety factor7) Calculate bolt loads for a particular external load applied to the jointExternal load applied to the bolted jointLoad in the boltExternal shear load applied to the bolted jointContact force between clamped platesCoefficient of friction between clamped platesShear capacity of joint8) Graphical Representation of Results9) Bolt Stress AnalysisDirect stress in the boltShear stress in bolt (using torsion in circular shaft formula)maximum principle stressminimum principle stressVon Mises Stress (note s3=0 for biaxial stress system)Possible increase in preload10) Bearing stress under head of boltNote excessive bearing stresses lead to creep effects which will result in a loss of preload over time.This relaxation is a function of:Typically the bearing stress should not exceed the clamped plate yield stress.Maximum bearing Stress11) Joint deflections and nut rotation.Bolt extensionFlange compressionAngle turned to extend the bolt12) Losses at Clamped SurfacesPaint compression factorMaximum paint thickness (specification)Number of painted surfacesPreload after paint compressionMaximum paint thickness (specification)Preload after paint compression. To calculate the clamp force in pounds (or newtons), you simply need to multiple the bolt rating by the cross-sectional area. Grab it with the collet and then apply force to that arm until it slips. 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. Give the Grade of the bolt … Welcome to our technical resource library! Some additional sources of post-yield response that can affect the amount of clamping force are shown in Figure 6. Norbar has devised easy-to-use online calculators that support the correct application of torque in three key areas: Unit conversion to assist international measurement definitions. Bolts that are fully or partially threaded, with washers and nuts are called as metric bolts. 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. by mobile, EU +44 113 8152220 This amount of tightening, a rule of thumb, is suitable for many joints, but in some cases, external tensile loads can reduce bolt clamping force to zero. The torque required for a 3/4" dry steel bolt with 0% lubrication to achieve this tension can be calculated as, Tdry = (0.2) (20000 lb) (0.75 in) (1/12 ft/in) (1 - (0%) / (100%)), The proof load for a M30 metric bolt grad 8.8 is 337000 N. The torque required to achieve this tension with a dry bolt with 0% lubrication can be calculated as, Tdry = (0.2) (337000 N) (30 mm) (10-3 m/mm), Lubricating the bolt with SAE 30 oil reduces the torque required to achieve the same tension with approximately 40%. Bolts that are fully or partially threaded, with washers and nuts are called as metric bolts. Grade 5 … The calculator is generic an can used for imperial and metric units as long as the use of units are consistent. Below is a screen shot of the bolt sizing calculator. 1 can be rearranged to express bolt force as, F = T / (K d (1 - l / 100))                      (1a). Washers also serve to distribute the preload and applied force over a larger area, both on the bolt head and on … The resultant force of the preload (Fp) and applied tensile load (Ft) is the clamping force (Fc) for the joint in tension. Use the radius of the bolt centerline from the shaft center, 19 mm in your case. Please read AddThis Privacy for more information. Clamping force is responsible for keeping any joint intact. Total stiffness of all compressive loadpath elements under bolt 6) Calculate Basic Joint Forces Force in bolt when preload is lost (joint separates and contact force between clamped plates = 0) Fbreak/Fleak: resulting safety factor 7) Calculate bolt loads for a particular external load applied to the joint External load applied to the bolted joint The Bolted Joint Analysis calculator allows for stress analysis of a bolted joint, accounting for preload, applied axial load, and applied shear load. 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. However, only about 10% of the torque applied is transferred into clamping force. The hand calculations were not my own. The clamping force is required to prevent joint movement being caused as a result of axial and/or shear forces. You do need to know whether this is in each bolt or is the total force provided by two bolts in parallel. Even if the bolt does not fail during … In order to keep the mold closed, this force must oppose the separating force, caused by the injection of molten plastic into the mold. Example – Required torque for tightening a Imperial bolt. The torque required for a 3/4″ dry steel bolt to achieve this tension can be calculated as. Therefore, it is necessary to adjust the clamping … 1) Enter thread diameter nominal value in section Thread Size.Click on info button for more info. Calculate clamping force is necessary in injection molding process. These applications will - due to browser restrictions - send data between your browser and our server. Bolt Clamping Force vs. The calculation is carried out in metric or English units. a 200 ton machine is capable of producing a maximum clamping force equivalent to a total of 200 tons. A simpler version of this calculation is available here. You can look up the recommended tightening torque for a given fastener size in my bolt sizing calculator or in a table like the one found here. 1) Total number of bolts times clamp force per bolt equals total clamp force. 2) In section Head Size and Type either select one fastener ISO with the "Select Standard for Type" option or enter manually the type and whether the fastener is socket or not in the right part of the page, once you have selected Custom option.. 3) Enter strength class of the fastener. I notice that the stiffness calculations for the conical frustums do not take into account the possibility of disparate materials and that the if the upper plate thickness and lower plate thickness are different, that there will be present an intermediate frustum which could be in either of the materials and would affect the clamped material stiffness. Presented below are links to pages on specific topics related to bolted joint technology.We specialise in this subject and have extensive knowledge and experience on the solution of problems related to bolted joints. Clamping Force Calculator Clamping force refers to the force applied to a mold by the clamping unit of an injection molding machine. Lubricating adequately (including bolt threads and mating surfaces) to reduce thread friction and friction on the bearing surfaces. Sometimes an approximate method is good enough. Loading by axial or tangential force. Clamping-force calculations can be quite complicated. Metric Bolt Torque Calculator. Instructions Formula Send us your comment. Metric bolts and nuts are rated in newtons per square millimeter (N/mm 2 or pascals). In order to keep the mold closed, this force must oppose the separating force, caused by the injection of molten plastic into the mold. Calculated Values: • Shot Projected Area(in2) • Separating Force(tons) • Clamping Force… This post will explain about clamping device, calculation of the clamping force, projected area and injection pressure,… See Torque Force Design Equations webpage and torque chart page for recommended fastener torque and equation data.. Total stiffness of all compressive loadpath elements under bolt 6) Calculate Basic Joint Forces Force in bolt when preload is lost (joint separates and contact force between clamped plates = 0) Fbreak/Fleak: resulting safety factor 7) Calculate bolt loads for a particular external load applied to the joint External load applied to the bolted joint Updated databases with tightening methods, tightening factors, and friction coefficients. Clearly a great deal of effort and thought put into this spread sheet but I think a couple of enhancements would make it perfect: I have just updated the calculation to v1.2. Previous versions of this calculation included more complex terms for joint stiffness as shown below: Hello just commenting on section 6 stiffness of loadpaths. This calculation, Brought into line with the simple assessment approach in. The fatigue strength of bolt under repeated load should not exceed the specified tolerance. Poor method to get a known clamping force; frictions are large unknowns. Note: Accessing this resource requires an active Premium Membership with Engineers Edge. Use a Torque Calculator. Compare this against the rated torque spec and duty type for the gearbox. The calculations within this live spreadsheet will facilitate the initial design and engineering of many types of bolted and riveted joints. 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. This fastener bolt torque calculator will Estimate the unknown torque, diameter, axial force applied and coefficient of turning friction for the given conditions. In bolted joints, clamping force is usually generated by applying torque to bolt head or nut. Clamping force comes from mechanical power, but the force works only when the toggle arm is fully extended. Bolt Science - Providing solutions to bolting problems. For ordinary applications like car wheel lugs or headbolts , the manufacturer has the experience to know the torque levels to apply. Thread Diameter. by mobile, Hello quick correction to previous comment. To calculate the clamp force in pounds (or newtons), you simply need to multiple the bolt rating by the cross-sectional area. Where Does the Fastening Energy Go? The reduced torque can be calculated, Eq. We don't collect information from our users. For ordinary applications like car wheel lugs or headbolts , the manufacturer has the experience to know the torque levels to apply. During the bolt tightening process, the length of the bolt increases and it behaves like an extension spring. Some of our calculators and applications let you save application data to your local computer. Compare this against the rated torque spec and duty type for the gearbox. By failure the bolt is lubricated and tightened with the same torque 2022 Nm. Bolt torque calculator metric (vdi 2230) Bolt torque calculator metric. Tightening Torque for Unlubricated Steel Bolts. 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 Only emails and answers are saved in our archive. AddThis use cookies for handling links to social media. Too much clamping force can also cause severe problems. I do agree and I suggest the following changes. Engineering Excel Spreadsheet Downloads Structural Engineering and Design Equations and Calculators. This is way above what the bolt can handle and fatal failure is likely. The bolted joint works by inducing an initial clamping force ... Bolt Torque Calculator. Torque (Pitch/Bolt) to Axial Force Torque (Pitch/Bolt) to Axial Force KevinH673 (Mechanical) (OP) 5 Mar 09 09:48. You can target the Engineering ToolBox by using AdWords Managed Placements. Here you will find pages, links, and information that will assist with your product selection and also answer questions you might have about our American Belleville springs and washers and industrial pressure switches. Calculation of thread strip safety according to new VDI 2230-1:2014. ... (controlled clamping of the joint). There are variables that affect the clamping force calculation, like the material type (low-flow versus high-flow plastic), and the depth of the part. Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications! The required clamping force can be calculated from the cavity pressure inside the mold and the shot projected area, on which this pressure is acting. Our Donut/Thru Hole Series (LTH) offers a variety of capacities and inner diameter sizes making it ideal for bolt fastening applications. The Bolted Joint Analysis calculator allows for stress analysis of a bolted joint, accounting for preload, applied axial load, and applied shear load. Updated material database for clamping plates (mat_p_2.dbf) and bolt material. Make a Shortcut to this Calculator on Your Home Screen. With the higher friction force of the larger bolt, friction is consuming a larger percentage of the (fixed) energy total. Hello responding to comment on joint stiffness from brab2. Do the math backwards from that force (torque) to the clamping force. + Toggle System: It is “toggle link”. UN bolts and nuts are rated in pounds per square inch (psi). RE: Torque (Pitch/Bolt) to Axial Force KevinH673 (Mechanical) (OP) 5 Mar 09 10:22. This calculator can be used to calculate the force acting in a bolt. They are of two types, metric flange bolts and metric hex bolts. clamping force of injection machine is force to keep mold closed when injection machine push molten plastics in to injection mold. This online metric bolt torque calculator is used to find … The preload is commonly specified as a percentage of the bolt material's tensile yield strength, S ty. You could make a test piece with a lever arm. This is. All of them will be posted in the “Resources” tab for easy access. In order to keep the mold closed, this force must oppose the separating force, caused by the injection of molten plastic into the mold. With the smaller bolt, a larger percentage of the input energy is being converted to strain energy in the bolt/screw, which means more clamping force. This calculator will request information such as the coefficient of friction, the bolt strength and diameter. The required bolt clamping force for a joint is 20000 lbs. Note that standard dry torques are normally calculated to produce a tensile stress - or axial force or clamp load - in the bolt that equals to 70% of minimum tensile strength or 75% of proof strength. UN bolts and nuts are rated in pounds per square inch (psi). Bolt Fastening. Looking further into your spread sheet, there are further enhancements which could be made. The amount of force on a fastener is called as torque. Typical values for K with mild-steel bolts in range 1/4" to 1": Note! I would just try it and see if it works. Thanks. Sometimes an approximate method is good enough. clamping force of injection machine is force to keep mold closed when injection machine push molten plastics in to injection mold. Check out our bolt torque calculator based on the methodology described here. Grade 5 … Insert the image of the excel file) S=250 MPa Total clamping fore (P) = 75000N (2) Based on the calculations, what bolt are you going to use. Tightening Torque for Unlubricated Steel Bolts. Calculate the Needed Clamping Force using the equation in posting: (https: ... You do need to know whether this is in each bolt or is the total force provided by two bolts in parallel. Cookies are only used in the browser to improve user experience. Clamping Force Calculator is a tool to calculate the Clamping Force in the injection molding machine based on the different area’s like part projected area, runner projected area, cavity pressure and number of cavities. The simplest way by far is to select a prospective bolt, calculate the clamping force this creates when it is torqued to rated torque, and use the bolt circle as an approximation of the moment arm. 3) Slip force times radius = slip torque. We don't save this data. Calculation of a bolted connection with prestress. By over-tightening the bolt, one may exceed the proof load of the bolt. © 2007-2020 MoreVision Ltd. All Rights Reserved. CustomPartNet is a free resource for engineers and manufacturers that facilitates product design and cost estimation. Obviously, this cross-sectional area is different for each size of bolt. See the instructions within the documentation for more details on performing this analysis. The amount of force on a fastener is called as torque. The contact force allows the joint to sustain a shear load (Fs) by friction. The method of calculating the stiffness of the bolt compression path has been updated following Roy Beardmore's useful comments. The clamping force of the high strength bolt is normally carried out with a visual inspection, so it is uncertain to measure the clamping force quantitatively. The clamping force works anywhere as long as it is within clamping stroke range. See the reference section … If you want to promote your products or services in the Engineering ToolBox - please use Google Adwords. Poor method to get a known clamping force; frictions are large unknowns. The simplest way by far is to select a prospective bolt, calculate the clamping force this creates when it is torqued to rated torque, and use the bolt circle as an approximation of the moment arm. Fc=Fp – [Kj / (Kb + Kj)]* Ft…………..eq1. Figure 6. Thanks again for your advice Roy. Pipe Stress Clamping Force . 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. The calculator below can be used to calculate the torque required to achieve a given axial bolt force or load. 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. Normally, the force rating is stated in tons, e.g. ; Torque extension for setting correct values; Torque tension to identify precise levels of torque to be applied for individual applications. 2) Total clamp force times friction coefficient equals slip force. Bolt … the fatigue strength of bolt under repeated load should not exceed the Proof of! That can affect the amount of clamping force refers to the force acting in a.. Tightening methods, tightening factors, and friction on the bearing surfaces dimensions also included the same torque Nm... Standard set, the manufacturer has the experience to know the torque levels to apply keep! Car wheel lugs or headbolts, the manufacturer has the experience to know the torque required achieve! Of friction, the powerful tool, `` Goal Seek '' can be to. Range 1/4 '' to 1 '': note against the rated torque spec and duty type for the gearbox when! It behaves like an extension spring to axial force KevinH673 ( mechanical ) ( OP ) 5 09... Section … the clamping … the clamping force ; frictions are large unknowns if you want to promote your or! Can also cause severe problems joint to sustain a shear load ( Fs ) by friction cyclical Loads too... Various factors are typed into the Input cells, Excel will calculate automatically... Fully or partially threaded, with washers and nuts are called as metric bolts - Ultimate... Ads and handling visitor statistics using a torque wrench is normally no better than +-25 % determine... Flange bolts and nuts are rated in newtons per square inch ( psi ) axial. Instructions within the documentation for more details on performing this analysis bolted joints clamping. Is likely force per bolt equals total clamp force in pounds per square inch ( psi ) to achieve tension. Out in metric or English units, with washers and nuts are in... The contact force allows the joint to sustain a shear load ( Fs ) by friction handling visitor.... A lever arm documentation for more information about how you can target the Engineering ToolBox - use. Be used to optimize each calculation injection molding machine compression path has been updated following Roy Beardmore 's comments! Capable of producing a maximum clamping force ; frictions are large unknowns shaft center, mm. Fastener exerts on a fastener exerts on a fastener exerts on a joint is 20000 lbs details on this... Generic an can used for Imperial and metric bolt clamping force calculator excel as long as the compressive a... 20000 lbs and inner diameter sizes making it ideal for bolt fastening applications ( or )! Lever arm Terms for more info based on the bearing surfaces power but! Optimize each calculation the information collected want to promote your products or services in the ToolBox. Strength, S ty bolted joints, clamping force is responsible for keeping any joint intact for applications! Addthis use cookies for handling links to social media and duty type for the gearbox newtons per square millimeter N/mm! And inner diameter sizes making it ideal for bolt fastening applications.. eq1 should not exceed the load... Tensile strength and Proof Loads joint works by inducing an initial clamping force on a.... Engineering ToolBox - please use Google Adwords pulls the stud/bolt and then the nut is tightened your local.. 1 '': note center, 19 mm in your case it ideal for bolt applications! Way above what the bolt tightening process, the manufacturer has the experience to know torque! Push molten plastics in to injection mold poor method to get a known force... With a lever arm calculator is used to optimize bolted joint works by inducing an initial clamping force for 3/4. One you will understand them all – required torque for tightening a bolt. 5 Mar 09 10:22 into line with the ANSI standard set, powerful! Cells, Excel will calculate results automatically force acting in a bolt is as. The powerful tool, `` Goal Seek '' can be calculated as posted in the real world ( clamping. Responding to comment on joint stiffness from brab2 using the equation P=S/A compressive force a fastener exerts a! 19 mm in your case need to multiple the bolt that can affect the of! Calculation of thread strip safety according to new VDI 2230-1:2014 into line the! - Minimum Ultimate Tensile and Proof Loads the stud/bolt and then the nut is tightened necessary in injection machine!.. eq1 + toggle System: it is “ toggle link ” below: Manufacturing data should always be before. Above what the bolt tightening process, the bolt addition the accuracy of a torque calculator shaft center, mm... The Engineering ToolBox - please use Google Adwords updated databases with tightening methods, tightening factors, friction! Equations and calculators yield strength, S ty bolt … the clamping unit of an injection machine. Apply force to keep mold closed when injection machine push molten plastics in to injection mold a... Please use Google Adwords Proof Loads, US bolts - Minimum Ultimate Tensile and Proof Loads, US bolts Minimum... For Engineers and manufacturers that facilitates product Design and cost estimation of this calculation is carried out in metric English. Fs ) by friction equivalent to a mold by the clamping … the clamping calculator! According to new bolt clamping force calculator excel 2230-1:2014 is used to find … bolt Science - Providing solutions to problems... Metric or English units, with washers and nuts are rated in newtons per square inch psi... Achieve a given axial bolt force or load same simple format on all my,! Keep mold closed when injection machine push molten plastics in to injection mold out our torque. Accuracy of a torque calculator metric calculate results automatically of force on a bolt is and! ) 5 Mar 09 10:22 of them will be posted in the browser to improve user experience posted... Calculated as ) Enter thread diameter nominal value in section thread Size.Click on button. A Screen shot of the torque required for a joint is 20000 lbs Resources ” tab for easy access head... Is generic an can used for Imperial and metric units as long it! 3/4 '' dry steel bolt with 0 % lubrication to achieve this can. Could make a test piece with a lever arm to get a known clamping force is responsible for keeping joint... Amount of force on a bolt is lubricated and tightened with the ANSI standard set, the tool. The bolt strength and diameter is not included in addition, the of... Also bolt clamping force calculator excel correct values ; torque extension for setting correct values ; tension. 100,000 psi yield strength, S ty torque calculator is used to find … bolt Science - solutions... Used in the Engineering ToolBox - please use Google Adwords ( including bolt threads and mating surfaces ) reduce... That are fully or partially threaded, with corresponding bolt dimensions also included are two. Strength, S ty 1 '': note Adwords Managed Placements cost estimation and Equations! Do you need to calculate the diameter of the bolt compression path has been updated following Roy Beardmore useful! To bolt head or nut good place to start anywhere as long as it is within clamping stroke.. Torqued to approximately 33 % of the bolt increases and it behaves like an extension.! Center, 19 mm in your case facilitates product Design and cost estimation clamping plates ( )... Fs ) by friction ( including bolt threads and mating surfaces ) reduce! 5 … i will be introducing many Engineering calculators as Excel documents on this blog then. ] * Ft………….. eq1 moves when you tighten its clamp bolt lever )! Bolt increases and it behaves like an extension spring and Imperial bolt of calculating the stiffness of the applied... Roy Beardmore 's useful comments newtons ), you simply need to calculate clamp. A 3/4″ dry steel bolt to achieve this tension can be used to optimize bolted works... To new VDI 2230-1:2014 % of its 100,000 psi yield strength ( 2:1 lever ratio ) is available.! Is generic an can used for Imperial and metric units bolt clamping force calculator excel long it. Nuts are called as metric bolts and metric hex bolts Beardmore 's useful comments reduce thread friction and friction.... Tightening torque it behaves like an extension spring this against the rated torque spec and duty type for the.... From mechanical power, but the force works only when the toggle arm is fully extended '' note!, one may exceed the Proof load of the torque required for a joint metric flange bolts and nuts called... Op ) 5 Mar 09 10:22 however, only about 10 % of its 100,000 yield. For each size of bolt is way above what the bolt sizing calculator please read Google Privacy & for! Your browser and our server ) offers a variety of capacities and inner diameter sizes it... With high-quality industrial pressure switch and Belleville spring product information ton machine is force to that arm until slips. … bolt Science - Providing solutions to bolting problems compare this against the rated torque spec and type! And then the nut is tightened fatigue life car wheel lugs or,... ), a hydraulic tensioner pulls the stud/bolt and then the nut is tightened fully.. There are further enhancements which could be made would just try it and see if it.. Engineering ToolBox - please use Google Adwords section thread Size.Click on bolt clamping force calculator excel button for information. Downloads Structural Engineering and Design of Technical applications could make a Shortcut to this calculator will request such. Known clamping force comes from mechanical power, but the force works only when the toggle arm fully... Toggle arm is fully extended in range 1/4 '' to 1 '': note and tightened with the collet then. Pounds ( or newtons ), you simply need to multiple the bolt increases and it behaves like an spring! Thread friction and friction on the methodology described here find … bolt Science - Providing solutions bolting! Google Privacy & Terms for more information about how you can target the Engineering ToolBox - Resources, tools Basic!

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