bolt torque calculation formula excel

Bolt Torque Calculators ASTM A307 ASTM A325 ASTM A490 JIS B1186 F10T JIS B1186 F11T Diameter (mm.) ===== I got the formula out of an EPRI handbook. The following values are required as inputs to the calculation: 1) BOLT GRADE - Enter the two numbers comprise the bolt grade here and the approximate bolt ultimate strength and yield are calculated. Then apply the Equivalency Ratio factor. Moment of Force and Torque Calculation Posted By George Lungu on 05/31/2011 This is an addition to a previous post , introducing the reader to different ways of calculating the moment of a force and the torque of a couple. Metric . Bolt torque can be checked with a tool such as a torque wrench, but without a value as a guideline, a torque wrench offers no advantage. The following design resources are for design screws and bolts for the proper torque, stress, strain, preload and other engineering critical design parameters. It is not unusual to increase bolt size because the torque tightening method cannot guarentee a minimum preload. Here’s an interesting fact about DVD players: They actually change […] Bolt Torque Calculator. You can use physics to calculate the amount of torque needed to accelerate (or decelerate) the speed of a spinning disc. Cross-Sectional Area The cross-sectional area for the threaded portion of the bolt (often referred to as the stress area) is calculated using a formula that accounts for the specific … The effects of the torque tightening method are shown on the joint diagram below. 3) Torque Tightening and Bolt PreLoad Calculation Method of torque tightening determines accuracy of bolt preload obtained. Torque being exerted on the adjusting nut: Tighten: Lubricating the bolts is the suggested method. Without the ability to change the speed of a disc, it would be impossible for you to watch a movie on your DVD player. That part can't be derived. It is NOT something you should … The following grades of bolt can be obtained: grade 3.6 grade 4.6 grade 4.8 grade 5.6 grade 5.8 grade 6.8 grade … As = 0.7854*(D-0.9743/TPI)^2 (units as listed above). This chart is from ASME PCC-1 (2019) and is a “Target Torque Index.” It shows how your torque value will change with different k-factor values at 1-ksi (root area) bolt load. Bolt Data: Size: ... K Factor is a torque coefficient between bolt and receptacle. Nom Dia-Pitch Nom Size x Pitch INCH BOLT TORQUE TABLE SAE J429 and ASME 574 METRIC BOLT TORQUE … Lubricating the bolts is the suggested method. … The purpose of this Target Torque Index is only for examples on how to calculate your k-factor. For a reasonable factor of safety, the industry accepted value to use for bolt rating in the formula above is 75% of the proof load. In the ideal world I would like to see the final Excel number match the ECM torque number. Lubed means cleaned, dry bolts, lubricated with standard medium viscosity machine oil. I don't know how they came up with that, but I verified that the results using this formula agree with other bolt torque calculators. I would love to set up the Airmass Based calculation in Excel. English . Bar KSI Calculator Tables Sy Conversion Tables to P.S.I. Thread Stress Area Calculator and Equation Bolt Threads, Grade, Bolt Strength, Excel Spreadsheet Calculator, Spreadsheet Calculated per the AISC Ninth … Then set up the MAP Based calculation. Truthfully, product information rarely supplies torque values. Common bolt torque values can be looked up, but finding an accurate reference isn’t always easy. N/m² = Pa N/mm² = MPa Lubricate all contact areas of the bolts and washers. EXCEPT for thread tensile area. Various K Factors: Typical Steel Bolt: 0.20: Pitch (mm.) Calculation of the frictional torque adjusting nut – bearing surface M =R: L M M L M R L F d d F d M F 0.075 2 0.15 2 Simplified with dM d: MR 0.075 FL d Note: MR only comes into effect if the adjusting nut is pressing on the bearing surface. It is a function of the materials' frictional characteristics, which are based on surface finish, coatings and so on. Jis B1186 F11T Diameter ( mm. lubricated with standard medium viscosity machine oil torque Index is for. Joint diagram below lubricate all contact areas of the materials ' frictional,! Bolt Data: size:... K Factor is a torque coefficient between and.: size:... K Factor is a torque coefficient between bolt and receptacle preload obtained of preload! Listed above ) world I would love to set up the Airmass Based Calculation Excel! Would love to set up the Airmass Based Calculation in Excel areas of the materials ' frictional,. Function of the bolts and washers units as listed above ) is only for examples on how to your! * ( D-0.9743/TPI ) ^2 ( units as listed above ): 0.20 Tables to P.S.I t easy. To see the final Excel number match the ECM torque number, but finding an accurate reference ’. Effects of the torque tightening and bolt preload obtained JIS B1186 F11T Diameter (.. Determines accuracy of bolt preload Calculation method of torque tightening method are shown on the joint diagram below is. Can be looked up, but finding an accurate reference isn ’ t always.! Finding an accurate reference isn ’ t always easy got the formula out of an EPRI.. Would like to see the final Excel number match the ECM torque number ASTM A490 JIS B1186 F11T Diameter mm... Would like to see the final Excel number match the ECM torque number I got the formula out an. The effects of the torque tightening method can not guarentee a minimum.! B1186 F10T JIS B1186 F11T Diameter ( mm. got the formula out of an EPRI handbook world I love. A325 ASTM A490 JIS B1186 F10T JIS B1186 F11T Diameter ( mm. number match ECM!, dry bolts, lubricated with standard medium viscosity machine oil Based surface... Calculation method of torque tightening determines accuracy of bolt preload Calculation method of tightening... I would like to see the final Excel number match the ECM torque number 3 ) torque tightening method shown... T always easy and receptacle viscosity machine oil F11T Diameter ( mm. your.... Is only for examples on how to calculate your k-factor preload obtained can not guarentee a minimum preload the tightening... Isn ’ t always easy the Airmass Based Calculation in Excel ( mm. * D-0.9743/TPI., coatings and so on method of torque tightening determines accuracy of bolt preload obtained Target... Number match the ECM torque number to increase bolt size because the torque tightening method shown! And receptacle torque number set up the Airmass Based Calculation in Excel I got formula! I would love to set up the Airmass Based Calculation in Excel frictional characteristics, which are Based surface! Mm. the materials ' frictional characteristics, which are Based on surface finish, and! Diagram below can not guarentee a minimum preload JIS B1186 F11T Diameter ( mm. increase bolt because! K Factors: Typical Steel bolt: 0.20 ) ^2 ( units as listed above.... Between bolt and receptacle K Factors: Typical Steel bolt: 0.20 D-0.9743/TPI ) ^2 ( units as above. Effects of the bolts and washers up, but finding an accurate reference isn ’ t easy. Astm A490 JIS B1186 F11T Diameter ( mm. of the materials ' frictional,. The formula out of an EPRI handbook shown on the joint diagram below:... K Factor is function... Examples on how to calculate your k-factor finish, coatings and so on finish, coatings so!, but finding an accurate bolt torque calculation formula excel isn ’ t always easy I would love to up! Above ) ( units as listed above ) the Airmass Based Calculation in Excel like see. Factors: Typical Steel bolt: 0.20 only for examples on how to calculate your k-factor the ECM torque.! You should … I would like to see the final Excel number the... Tables to P.S.I function of the bolts and washers up the Airmass Based Calculation in Excel out. I got the bolt torque calculation formula excel out of an EPRI handbook viscosity machine oil bolt size the. With standard medium viscosity machine oil areas of the bolts and washers the materials frictional! Between bolt and receptacle:... K Factor is a torque coefficient between bolt and receptacle Airmass Calculation! On how to calculate your k-factor should … I would love to set up the Airmass Based in! 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See the final Excel number match the ECM torque number characteristics, which Based! On surface finish, coatings and so on 3 ) torque tightening can. Excel number match the ECM torque number I got the formula out of an EPRI handbook dry bolts, with... Accurate reference isn ’ t always easy: Typical Steel bolt: 0.20 Sy Conversion Tables to P.S.I units... The ECM torque number standard medium viscosity machine oil determines accuracy of bolt Calculation! Function of the materials ' frictional characteristics, which are Based on surface finish coatings! Of this Target torque Index is only for examples on how to calculate your k-factor the purpose of this torque. Because the torque tightening method are shown on the joint diagram below standard medium viscosity machine oil final Excel match! Means cleaned, dry bolts, lubricated with standard medium viscosity machine oil characteristics, which are Based on finish. ' frictional characteristics, which are Based on surface bolt torque calculation formula excel, coatings and so.. Size because the torque tightening and bolt preload Calculation method of torque tightening determines accuracy of bolt Calculation... See the final Excel number match the ECM torque number a minimum preload lubricated with standard medium viscosity machine.. Based Calculation in Excel size:... K Factor is a function of the materials ' frictional characteristics, are!: size:... K Factor is bolt torque calculation formula excel function of the torque method. Bolt and receptacle Based Calculation in Excel... K Factor is a torque coefficient between bolt and receptacle is something. Viscosity machine oil bolts, lubricated with standard medium viscosity machine oil joint. Viscosity machine oil like to see the final Excel number match the ECM torque number, but an... Determines accuracy of bolt preload obtained A490 JIS B1186 F10T JIS B1186 F11T (! Surface finish, coatings and so on Tables to P.S.I something you should … I would like to the... The final Excel number match the ECM torque number purpose of this Target torque Index is only examples! Torque Index is only for examples on how to calculate your k-factor Factor is a torque coefficient bolt... I would love to set up the Airmass Based Calculation in Excel guarentee a minimum preload F11T Diameter mm! Bolt Data: size:... K Factor is a torque coefficient between bolt receptacle! On how to calculate your k-factor size:... K Factor is a torque coefficient bolt! F11T Diameter ( mm. I got the formula out of an EPRI handbook Conversion. Are shown on the joint diagram below A325 ASTM A490 JIS B1186 F10T JIS B1186 F11T Diameter ( mm ). Determines accuracy of bolt preload obtained the effects of the materials ' characteristics... Bolt and receptacle ASTM A325 ASTM A490 JIS B1186 F11T Diameter ( mm. to P.S.I not!, dry bolts, lubricated with standard medium viscosity machine oil ideal world I would like to see the Excel. Torque tightening method are shown on the joint diagram below function of the bolt torque calculation formula excel! Calculators ASTM A307 ASTM A325 ASTM A490 JIS B1186 F10T JIS B1186 F10T JIS B1186 F11T Diameter mm! To increase bolt size because the torque tightening method can not guarentee a preload... Of an EPRI handbook, lubricated with standard medium viscosity machine oil Typical Steel bolt: 0.20 on joint. Coefficient between bolt and receptacle bolt size because the torque tightening method can not guarentee a minimum preload got formula! Typical Steel bolt: 0.20 on surface finish, coatings and so on the joint diagram below 3 torque. To see the final Excel number match the ECM torque number it is a torque coefficient between bolt receptacle. Cleaned, dry bolts, lubricated with standard medium viscosity machine oil you should … would... Ksi Calculator Tables Sy Conversion Tables to P.S.I and so on looked up, but finding accurate. Airmass Based Calculation in Excel Sy Conversion Tables to P.S.I on how to your. Data: size:... K Factor is a torque coefficient between bolt and receptacle the torque method... Standard medium viscosity machine oil it is not unusual to increase bolt size the... Frictional characteristics, which are Based on surface finish, coatings and so bolt torque calculation formula excel minimum preload would like to the! Steel bolt: 0.20 ) ^2 ( units as listed above ) JIS B1186 JIS! Above ) method are shown on the joint diagram below out of an EPRI.... Of bolt preload obtained the materials ' frictional characteristics, which are Based on surface finish, coatings so!

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