Excel Formulas for Joint Load Calculations. The torque needed to overcome nut face friction. Calculation checks: Flange Stresses, Bolting Criteria, Weld Criteria, Rigidity Criteria, Gasket Seating Condition Satisfied, MAWP based on Bolt Stress, MAWP based on Flange Stress and Total Permissible MAWP. A bolted joint connects two structural elements using a bolt and a nut. For 8. Calculation formula of ordinary bolt torque: T = KFd(N,mm) K, tightening torque coefficient, a reference value can […] Let us consider 1’’ bolt of SA193 Gr. Jul 19, 2023 · Now, TorStark will show you how to calculate the tightening torque of flange bolts. The screw torque calculation utilizes the following formula: \[ Ts = K \cdot F \cdot d \cdot (1 - \frac{L}{100}) \] where: \(Ts\) is the Screw Torque in pound-feet (lb-ft), \(K\) is the material constant, \(d\) is the nominal bolt diameter in feet (ft), \(F\) is the axial bolt force in pounds-force (lbf), The Bolt Torque/Tension calculation provides a simple estimation of the tension in a bolt based on the torque imposed or vice versa. W. Where: where A i is the bolt area and x i and y i are the x- and y- bolt locations, respectively. Rotational Speed = 15. The Bolt clamping force is an essential factor in the design of bolted joints. 15) d': Pitch Diameter of Gland Bolt. The formula for calculating flange bolt torque is given by: \[ T = \frac{k \cdot f \cdot d}{12} \] where: The Bolt Torque/Tension calculation provides a simple estimation of the tension in a bolt based on the torque imposed or vice versa. 8 grade bolts with a diameter of 20mm and pitch of 2. 8 5. Compared to the calculation of bolted joints according to VDI 2230 in MDESIGN mechanical, MDESIGN bolt includes additional functions and calculation options for. For instance, to calculate the torque for a 3/4" dry steel bolt with 0% lubrication, we use the values in the formula to find that 250 lb_f ft of torque Bolt Root and Tensile Stress Area Table for Metric and Inch Unit Threads ; Bolt Elongation Formula and Calculator per. xls: Determines to preload in a bolted joint. Supplier of DTI Washers -Lots of useful notes; Surebolt. This fastener bolt torque calculator will Estimate the unknown torque, diameter, axial force applied and coefficient of turning friction for the given conditions. K is the coefficient of friction. The most basic way to calculate torque is to multiply the Newtons of force exerted by the meters of distance from the axis. Bolt clearance Listing of the minimum clearances between bolt and edges needed for a practical screwing operations. Aug 15, 2024 · The advanced version of this calculator includes an additional parameter for the coefficient of friction, allowing for a more precise calculation of the flange bolt torque. A Useful Calculator from Futek; Smartbolts. This route often is used when a custom appendix 2 flange must mate up to standard flanges such as B16. Hertz_contact_point. xls: Hertzian contact calculations for point contacts. Feb 14, 2024 · Bolt Torque Formula Calculator. When various factors are typed into the Input cells, Excel will calculate results automatically. Jul 28, 2023 · Enter the bolt load (N-m), the diameter (mm), and the nut factor (k-value) into the calculator to determine the Gasket Torque. 20 and 0. in. d = nominal bolt diameter (m, ft) Excel Formulas for Joint Load Calculations. Grade 2 calculations only cover fasteners 1 ⁄ 4 “- 3 ⁄ 4 ” in diameter up to 6″ long; for longer fasteners the torque is reduced significantly. What is the correct bolt length? The correct bolt length that should be used in an assembly is roughly 2 times the diameter of the bolt, plus the thickness of the material. The relation between applied torque and axial force - or load - in a bolt can be calculated in this general equation as. Acme thread calculations refer to the mathematical calculations and considerations involved in the design and manufacturing of Acme threads. Hertz_contact_line. To calculate the preload force in Excel, you can use the formula: `=Proof_Strength * Percent_Preload * Tensile_Stress_Area`. The following is the calculations one would use to determine the actual torque applied when using an extension or crow-foot. Moved Permanently. Therefore, I will show you how to calculate the bolt torque. Calculation of Axial Tightening Force and Tightening Torque The Bolt Torque & Preload calculator can be used to calculate the torque required to achieve the desired preload on a bolted joint. Enter Zero for no applied moment. Explanation. But EN 1591-1 is very difficult. 6 4. For bolts, Sys=0. 2d^2L*T, where d is the nominal diameter of the bolt, L is the length of the bolt, and T is the tensile strength of the bolt material. We will evaluate target bolt torque required for leak-proof tightening. Mar 28, 2023 · The magnitude of that rotation is torque (τ), expressed in newton-meters (N∙m). The first requirement in determining the amount of torque to apply is a knowledge of the desired bolt stress. xls: Calculate the combined errors for a structural loop. d = nominal bolt diameter (m, ft) Jan 11, 2022 · Originally published in 2001 with torque calculations for butterfly valves, AWWA M49 is currently in its third edition. The moments of inertia of a bolt pattern indicate the ability of the pattern to resist bending moments. Flange bolt torque calculation formula. In this calculator, you will also learn: What bolt torque is; The bolt tightening torque formula we used in this tool; How to calculate bolt torque; and; How to use this bolt torque calculator. For an VIII-1 App. 2) use weaker bolts - same idea as above. For other applications or questions, e-mail engineer@fastenal. Oct 10, 2011 · A 5/8″ lag bolt has a minor diameter of 0. Watch the video to Aug 5, 2024 · Enter the torque applied to the bolt, the diameter of the bolt, and the friction coefficient to determine the bolt pretension. 16 for noncoated and coated bolts, respectively. Fastener and Screw / Bolt Design Formula Design Data Strength of Materials. 15. · Do not let the seat of a bolt or nut dent the contact area. Now, let’s start. ” It shows how your torque value will change with different k-factor values at 1-ksi (root area) bolt load. (c) Required Bolt Loads. Formula for Flange Bolt Torque Calculation: The formula for calculating the torque required to tighten flange bolts depends on several factors, including the bolt diameter, material, thread pitch, and the type of flange facing. Torque is a measure of the conversion of linear force to rotational force at a distance from the axis of rotation. FastLube (teflon base) 0. 9 12. Provides a good Excel based bolt calculator at reasonable cost Jul 24, 2024 · The formula for bolt tightening torque calculation is: Torque (Nm) = K × D × P. Note: P - Pitch, d 2 - Pitch diameter of the bolt thread, d 0 - Diameter at the relevant smallest cross section, d h - hole diameter of clamped parts, s- Width across flats, μ Gmin-Coefficient of friction in the thread, μ Kmin-Coefficient of friction in the head bearing area, R p0. Eccentric load cases; In-house screw geometries; Banjo bolts, flange bolts, stud bolts, Stud bolt; Countersunk head screws; Screws with inch dimensions (UNC, UNF, UNEF) The spreadsheet allows to calculate the forces on the bolts in a bolted connection inserting the coordinates of each bolt composing the joint. Plate_Circular_Central. The torques wrench adapter extended calculator requires a java Calculate required bolt torque. Jan 8, 1993 · Euromech Colloquium NR 110 Rimforsa, p. 1978. Related Resources: calculators Bolt Torque from Thread Pitch Calculator . shall be sufficient to resist the hydrostatic end force. Not able to understand why am I getting this huge Torque Wrench Calculator for Extended Adapter with Formulas. When you put an extension on a torque wrench (e. The Bolt Torque/Tension calculation provides a simple estimation of the tension in a bolt based on the torque imposed or vice versa. Through calculations I got 70 N-m torque value but in actual practise when I measured, it came around 30 N-m until there was a bent in Bolt clamp bar. In addition, the powerful tool, "Goal Seek" can be used to optimize each Calculation. The SkyCiv Bolt Torque Calculator is a free tool to help determine the correct amount of rotational force needed to tighten a bolt. An invaluable tool for engineers, the torque extension app calculates the exact torque wrench setting value for required level of torque to be applied. What is Torque? Torque is a twisting force measuring force These estimated torque values are derived from the standard torque formula Torque = KDF utilizing a standard "free-spinning" nut (non-locknut) with a proof strength equal to or greater than the tensile strength of the bolt. 6 5. Calculation Formula. Where "K" is the torque coefficient, "D" is the nominal diameter of the bolt, and "P" is the bolt's clamping force. Click on info button for more info. Bolt Pattern Moments of Inertia. These estimated torque values are derived from the standard torque formula Torque = KDF utilizing a standard "free-spinning" nut (non-locknut) with a proof strength equal to or greater than the tensile strength of the bolt. Bolts in Tension Bolt Thread nomenclature Figure 1 . TUFF-RAIL® Manway Gasket Selector Updated material database for clamping plates (mat_p_2. Jun 2, 2023 · The Bolt Torque Formula. d = nominal bolt diameter (m, ft) The Bolt Torque/Tension calculation provides a simple estimation of the tension in a bolt based on the torque imposed or vice versa. The external loads considered in the spreadsheet are the shear and tension forces, the bending and torque moments. According to EN 14399-1:2015 , assemblies to k-Class K2 are supplied with km (required) and Vk ( optional ) figure together with torque values (required) for both steps of the assembly (these values are supplied in technical Dec 28, 2023 · There are a couple ways to calculate fastener torque: with a mathematical formula and a physical test. Fastener Relation Between Torque, Thread Pitch and Clamping Force Formula and Calculator Jul 24, 2024 · The formula for bolt tightening torque calculation is: Torque (Nm) = K × D × P. It is NOT something you should blindly use. Errors in torque calculation can result in expensive failure, including the time and hassle of replacing broken equipment. Torque wrench on unlubricated bolts : ± 35% : Torque wrench on cad plated bolts : ± 30% : Torque wrench on lubricated bolts : ± 25% : Preload indicating washer : ± 10% : Strain gauges : ± 1% : Computer controlled wrench (below yield) ± 15% : Computer controlled wrench (yield sensing) ± 8% : Bolt elongation : ± 5% : Ultrasonic sensing The Bolt Torque/Tension calculation provides a simple estimation of the tension in a bolt based on the torque imposed or vice versa. Using a torque wrench, the torque being applied to the bolt in this example is found to be 300 in-lbs. 15 and calculated. Calculation Sheet-4 - 1 - Basic Calculation of Tightening-Torque for Gland Bolting MQ ≅0. Bolt Torque is the twisting or turning force applied to tighten the nut on a bolt. Torque is a measure of the rotational force applied at a certain distance from the rotation axis. Q: Tightening Force ( ) g II I P d d Q ⎟⎟× ⎠ ⎞ ⎜ ⎜ ⎝ ⎛ − = 8 π 2 2 dI: Stem Apr 7, 2016 · $\begingroup$ As elaboration and proof, from your claim, different threads will require the same torque, but you will have to make more turns with a finer thread. Items highlighted in Orange are information estimated by engineer. Bolt stretch ±1 to ±8: Use bolts with flat, parallel ends. Bolts that are fully or partially threaded, with washers and nuts are called as metric bolts. Metric . 3) if material waste and cost are no object, make the flange thicker. Input and calculation of additional bending moment MB for eccentric load. Torque past yield ±3 to ±l0: Use "soft" bolts and tighten well past yield point. For example, the Sep 27, 2021 · Register for more free videos & huge discounts on our courses: Click https://bit. Bolt torque Calculator. þ’m üûŽ—…Рإ¶Z. Metric-Coarse Screw Threads, and μ=0. The following formula is used to calculate the Gasket The Bolted Joint Analysis calculator allows for stress analysis of a bolted joint, accounting for preload, applied axial load, and applied shear load. Calculate required bolt torque. Feb 28, 2006 · 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. Using a calibrated torque wrench (manual or hydraulic), flange bolt torque can be measured during flange assembly. However, nuts are generally designed to have lower strength and hardness values than bolts of the same grade. Equation 1 T f = T s + T w = K · F f · d . New Xylan coated steel bolts and nuts with 1/4 in. All Torque Calculators; Flange Bolt Torque Calculator; Fastener Torque Calculator; Preload Torque Calculator; Head Gasket Volume Calculator; Gasket Torque Formula. Bolts_preload. English . (Equation 26) D B: L: Equivalent diameter of torque bearing surfaces (Equation 53) d 2: L: Effective diameter of internal (nut) threads: d b: L: Nominal bolt diameter and externally threaded material (bolt) major diameter Jul 24, 2024 · The formula for bolt tightening torque calculation is: Torque (Nm) = K × D × P. Flange Bolt Torque Calculation Formula. a crow foot or a dog bone) the torque applied to the fastener increases as the lever arm extends. xml ¢ ( ÌVËnÛ0 ¼ è? ¼ (ŠÂr irl $ý†\K„)’à2‰ý÷]ÒrP Ž-Y Ò‹(‘Ú™ÙY¾ W›Ö Ï P;[±‹rÎ °Ò)mëŠýy¸ }g Fa•0ÎBŶ€ìjùùÓâaë Š¶X±&Fÿƒs” ´ KçÁÒÈÊ…VDú 5÷B®E ür>ÿÆ¥³ lœÅ„Á–‹Ÿ° O& 7 êÞ)yÔ– ×»ÿ UÅ„÷FK I( ¶ê ÉÌVZ‚rò©%è }¡° ˆ)}ÐÄ î!FJ ?Èémý†S·Isê? 1) Enter thread diameter nominal value in section Thread Size. + A Value) x Max. Truthfully, product information rarely supplies torque values. Where: T f = fastener tightening torque Solving for the strength (max force) of fastened (bolted) joints using Microsoft Excel! Even better, using Excel solver utility to help! This is one of my Bolt Elongation by Turn Formulas and Calculator per. 9 NORBAR TORQUE TOOLS LTD. 8 10. Step-by-step illustrated examples show how to use the spread sheet tools to optimize bolted joint designs. Control bolt hardness and dimensons. The sample chart shown here is based on static conditions, class 2A and 2B Even experienced tradesmen over-or under-torque bolts. Maintenance and Inspection: Regularly inspect and maintain the bolted joint to ensure its continued performance. Since energy is torque times angle your statement violates conservation of energy because, in the frictionless case, it claims you can put different amounts of energy in yet get the same amount of energy stretching the bolt. The Submitted By: The Bolt Torque/Tension calculation provides a simple estimation of the tension in a bolt based on the torque imposed or vice versa. This is important to ensure that the bolt is properly tightened and can withstand the forces that it will be subjected to. xls: Hertzian contact calculations for line contacts. 17497 sq. The purpose of this Target Torque Index is only for examples on how to calculate your k-factor. The equation T=kDP is used to estimate fastener torque calculations, where: T = Torque in newton-meters (Nm) k = Coefficient of friction; D = Diameter of the fastener in millimeters (mm) P = The desired tension in • Assemble 10 to 12 bolts as they are to be constructed • Using a calibrated torque wrench, torque the fasteners to failure and record the maximum torque values achieved • Take the average of these maximum torque values • Use a seating torque equal to 65-70% of the above average value Feb 14, 2024 · Calculation Example: The bolt tightening torque formula is used to calculate the amount of torque that needs to be applied to a bolt in order to achieve a desired bolt axial stress. Error_Budget. 2×Q×(d'×1. It is a function of the materials Jul 19, 2023 · The formula used in the Bolt Torque/Tension calculation is: T = (K * T) / D. Formulas to calculate preload and torque of a bolt, tensile stress area of screw thread, length of engagement to prevent stripping and shear area of the internal/external threads. Relationship between the applied tightening torque and bolt preload F f. The Bolt torque calculator for the calculation of tightening torque and preload for bolts. ) Related: Bolt Elongation Equation and Calculator while under Axial Stress; Fastener, Bolt and Screw Design Torque and Force Calculation; Bolt Preload Tension Nov 30, 2023 · Practical Examples of Torque Calculation. Preload and Bolt Force Calculations. When tightening a fastener with a torque wrench, which is one of the easiest and most common methods, the fastener is considered to be properly tightened once the specified torque is achieved. In order to comply with European legislation, like TA-Luft, more and more companies decide to use calculation software based on EN 1591-1. 6 M2 M3 M4 M5 M6 M8 M10 M12 M14 M16 M20 M24 M30 M36 M42 - 3. Tensile Area of a bolt used for thread tear out calculations (See Section 8. Tabulating data from bolt-load calculations is an easy way to speed the design process. Common bolt torque values can be looked up, but finding an accurate reference isn’t always easy. See the instructions within the documentation for more details on performing this analysis. This course is divided into 3 sections. The Feb 14, 2024 · A: Bolt torque calculation is important to ensure that the bolt is tight enough to hold the joint together but not so tight that it damages the bolt or the joint. Feb 17, 2024 · Calculation Example: The tightening torque for bolts is calculated using the following formula: T = 0. Torque has been converted into ft/lbs by dividing the result of the formula by 12 All calculations are for Coarse Thread Series (UNC). Control bolt hardness, finish, and geometry. 115-20, 27 au29 sept. Updated databases with tightening methods, tightening factors, and friction coefficients. Where: Bolt clamping force is an essential factor in the design of bolted joints. This document provides calculations for determining the required torque for tightening bolts on a flanged joint. Torque Engineering and Design Menu. It lists input parameters like material properties, bolt dimensions, gasket details, and design pressure. Ready to learn? Jan 27, 2021 · This chart is from ASME PCC-1 (2019) and is a “Target Torque Index. Oct 16, 2007 · Hi, I used 5/8″ bolt with ASTM A36 material and calculated Torque value by above formula. (1) The required bolt load for the operating condi-tions. Bolt Elongation Formula and Calculator per. Lubricated on all mating surfaces of washers, studs, and nuts with Moly Paste containing 70% solids. 1. 2 M1. It provides the formulas to calculate the net tensile area and proof load of bolts based on their dimensions and grade. Bolt Preload Calculator; Bolt Friction Coefficient Calculator; Bolt Pretension Formula. The prevailing torque, if present. This torque creates an axial force in the bolt. There are two main methods for calculating torque: Method 1: Using the Formula. ASME PCC-1 When bolt elongation (bolt stretch) measurement is selected as the load-control technique to be used, the required bolt elongation is computed according to the following equation; Bolt Threads, Grade, Bolt Strength, Excel Spreadsheet Calculator , Spreadsheet Calculated per the AISC Ninth Calculate required bolt torque. Fastener and Screw Torque Design and Equation and Calculator ; Torque Wrench Calculator for Extended Adapter with Formulas ; Torque Wrench Adapter for Reduced Arm Equation and Calculation ; Bolt Torque, Axial Clamp Force, Bolt Diameter Calculator ; Bolt Torque and Clamping Force Formulas and Calculator per. where: T is the tension in the bolt (in pounds or newtons), K is the nut factor (dimensionless), T is the torque applied to the bolt (in foot-pounds or Newton-meters), and D is the bolt diameter (in inches or millimeters). 1) where, MQ: Tightening-Torque of Gland Bolt Nut. The document has moved here. T = wrench torque (Nm, lbf ft) K = constant that depends on the bolt material and size. Description. (In case of 30 deg. Related: Bolt Pattern Group Pullout Excel Spreadsheet Calculator; Fastener, Bolt and Screw Design Torque and Force Calculation; Design Bolted and Riveted Joints Torque to Obtain Preload. The torque needed to extend the fastener is that which generates the preload, typically it represents between 5% and 10% of the total tightening torque that is needed to be applied. xls Plot torque vs turn and compare to previously derived set of curves. A "clever" bolt with DTI built in; Applied Bolting. This calculator provides the calculation of bolt torque using the bolt torque formula. Use the calculate button when all known values have been entered and use the reset button when you want to clear the values from the calculator. 쇙÷žÇcÏÌ ®—Rd °Žk5Ì/Š~ž bºäj:Ì The Bolt Torque/Tension calculation provides a simple estimation of the tension in a bolt based on the torque imposed or vice versa. 8 9. 1896 “5-2 DmN Value” is DmN = (Screw Dia. thick washers. In bolted joints, clamping force is usually generated by applying torque to bolt head or nut. Many of the common tightening methods achieve the preload force by applying a torque to the nut or to the bolt head. See the reference section for details on the methodology and the equations used. Tightening torque to preload a bolt Metric thread : M1 M1. 471″, which calculates to a stress area of 0. This calculator helps in ensuring that bolts are properly tightened in mechanical assemblies. Eng-tips forums: The best place on the web for engineering discussions. More torque is applied the nut stretches the Jan 28, 2024 · It is calculated using the formula P = (F * (d^2)) / (4 * S * K), where P is the bolt preload, F is the applied force, d is the bolt diameter, S is the length of the bolt, and K is the material stiffness constant of the bolt. 0 (Excel Spreadsheet) This Excel (XLXS) file provides helpful references for raised face flange torque, gasket stress, bolt tables, and tech conversions for rectangular, full face, elliptical, and obround gaskets. Applying the formula for calculating tensile strength for a mild steel bolt, we get a value of 10,500 lbs. Bolt load calculation: Maximum bolting torque is considered to develop 40% to 60% of bolt yield stress. See tables 14-6 and 14-7 for Sy. During the bolt tightening process, the length of the bolt increases and it behaves like an extension spring. This updated tool builds on the success of its predecessor in helping utilities calculate their system’s oxidation options for cyanotoxins, while adding new features including: pH range has been expanded to 6-10; 95%-confidence intervals added for reactions where natural microcystin mixtures may have different rates BOLT TORQUE CALCULATION FORMULA. ASME PCC-1When bolt elongation (bolt stretch) measurement is selected as the load-control technique to be used, the required bolt elongation is computed according to the following equation This equation is rearranged to solve for input torque, which is reacted by the torque under the head of the driven fastener (head torque) and the torque at the contact of the nut and bolt threads (thread torque): + = + + 2 2cos 2 2, K km M th G A A PRE M D F P D M M F µ β µ π (3) input thread torque head torque torque Thread torque includes: Jul 9, 2022 · Conversely, you can also use this tool as a bolt clamping force calculator to find the resulting clamping force of any applied bolt torque. Aug 7, 2024 · How to calculate clamping force? First, determine the torque applied to the bolt. Clamping Force Calculation. This formula gives you the initial tension that needs to be applied to the bolt. Bolt Threads, Grade, Bolt Strength, Excel Spreadsheet Calculator . 0. Bolt clamping force is an essential factor in the design of bolted joints. However, a simplified formula for torque calculation is as follows: T = K ⋅ D ⋅ P. NOTE: Refunds are not awarded after excel files have been downloaded - review your membership agreement for details. Jul 19, 2023 · The formula used in the Bolt Torque/Tension calculation is: T = (K * T) / D. Here we will consider bolt torque to produce 60% of bolt yield T b = assembly bolt torque, N·m (ft-lb) K = nut factor (for bolt material and temperature) 0. The formula is T = K * d * P * ?, where T is the torque, K is the nut factor, d is the PK !®Ú# [Content_Types]. 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. Based on the chart, the total bolt preload requirement can be conservatively calculated using the formula: Where: F i = total bolt preload requirement [N] F i,shear = contribution of external shear forces on the required preload [N] This fastener bolt torque calculator will Estimate the unknown torque, diameter, axial force applied and coefficient of turning friction for the given conditions. This excel spreadsheet may contain macros which will need to be enabled in your excel application, see web page: Enable macros in Downloaded excel files This fastener bolt torque calculator will Estimate the unknown torque, diameter, axial force applied and coefficient of turning friction for the given conditions. The formula that expresses the relationship between the load in a bolt and applied torque is: T = K F d. The shear strength, which I think you are concerned about would be This fastener bolt torque calculator will Estimate the unknown torque, diameter, axial force applied and coefficient of turning friction for the given conditions. 8 6. This Excel (XLXS) file provides helpful references for raised face flange torque, gasket stress, bolt tables, and tech conversions for rectangular, full face, elliptical, and obround gaskets. m. It then calculates the effective gasket width, equivalent pressure, hydrostatic end force, minimum bolt load to seat the gasket, and finally the required torque per bolt to seal How to Calculate Torque to Tighten Bolts. The following formula is used to Jul 19, 2023 · The formula used in the Bolt Torque/Tension calculation is: T = (K * T) / D. g. Use consistent snugging torque. The torque needed to overcome thread friction is present because of the The Bolt Torque/Tension calculation provides a simple estimation of the tension in a bolt based on the torque imposed or vice versa. There's also a rotational version of this formula for 3-dimensional objects that uses the moment of inertia and angular acceleration. 70% of the rated yield strength when the torque method is used. You must know how to calculate torque for tightening bolts to ensure that your application is functional and safe. Explanation Calculation Example: Bolt pretension methods are used to ensure that bolts are properly tightened and maintain a specific amount of tension. dbf) and bolt material. The Submitted By: Dec 30, 2015 · The Bolt Torque/Tension calculation provides a simple estimation of the tension in a bolt based on the torque imposed or vice versa. Your coefficient will depend on the material of your bolt/nut, the type of lubrication (or, rarely, the lack of lubrication) and the size of the bolt. In addition to information on butterfly valves, the current edition also includes operating torque calculations for other quarter-turn valves including plug valves and ball valves. MIL-HDBH-60; Design Considerations. They are of two types, metric flange bolts and metric hex bolts. Fastener Torque Formula. The flange bolt loads used in calculating the required cross‐sectional area of bolts shall be determined as follows. The Submitted By: Tightening Technique: Employ a proper bolt tightening technique, such as torque control, angle control, or bolt elongation measurement, to ensure consistent and accurate preload across all bolts. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Jul 19, 2023 · The formula used in the Bolt Torque/Tension calculation is: T = (K * T) / D. B7 is required for flange joint material with nut factor of 0. Note: This is in case of no axial force, just a moment acting alone. Calculation of thread strip safety according to new VDI 2230-1:2014. The Submitted By: If the nut has a higher shear strength than the bolt, failure will likely occur at the root of the bolt threads. 11. Torque Wrench Adapter Extended Equations & Calculator. Using a calibrated torque wrench (Manual or Hydraulic Torque Wrench), flange bolt torque can be measured during flange assembly. The fundamental formula to calculate torque for tightening bolts is: T = K x D x F. These calculations involve determining the pitch diameter, lead, and flank angles, as well as the tolerances required to ensure the thread can withstand the intended loads. Calculation Example: The bolt torque formula is used to calculate the torque required to tighten a bolt to a specified preload. 577Sy. d = nominal bolt diameter (m, ft) Jan 30, 2024 · Charting Loads and Torques. The Bolt Torque Calculator. The Submitted By: Feb 13, 2024 · This calculator provides the calculation of bolt pretension force and bolt stress for a given bolt pretension torque, bolt stiffness, and bolt diameter. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright PK !‹ˆ@Òá Î [Content_Types]. Mar 4, 2020 · Now for EN 1591-1, it would hardly be impossible to first create your own method (in say Excel, MathCAD or SMath), before using commercial software. Jul 24, 2024 · The formula for bolt tightening torque calculation is: Torque (Nm) = K × D × P. K Factor. Bolt clamping force is an essential factor in the design of bolted joints. Tightening torque calculation Calculation of tightening torques and bolt parameters in table format using the standard Motosh formula. 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 1) Enter thread diameter nominal value in section Thread Size. Apr 25, 2023 · Items highlighted in Blue are information from drawing. It should be noted that this calculation is directly analogous to the calculation of the centroid of a cross section. · Do not break the tightened piece by tightening. Acme Thread Calculations. xml ¢ ( ÌXMo 1 ½Wê XíµbMÒ6* ‡$=Um¤¤R¯Æ;°. Wildmere Road, Banbury, Oxfordshire, OX16 3JU, United Kingdom Registered Office as above - Registered in England Feb 19, 2024 · Calculating the correct torque for tightening bolts is crucial for ensuring a strong and secure joint without damaging the threads or bolt itself. The document discusses how to calculate the torque required to tighten bolts of different grades, diameters, and pitches. If the bolt and nut have equal strength, failure will likely occur at the pitch line between the threads. Additionally, the DmN Value according to the formula on P. This helps determine the right torque for secure fastening. T = K F d (1 - l/100) (1) where. Torque is only an indirect indication of tension. ly/express-training_____#heatexchanger #pressurevessel #pvelite #s Sep 25, 2021 · In many cases, the calculation of bolt torque is a very important issue, which can help us choose more suitable hydraulic tools for work. Bolt torque is the torsional or rotational force applied to tighten the nut on a bolt. 16. JIS B 1083 ; Torque Table Standard bolts reduces this theoretical gasket crushing force. Read more to learn about clamping force calculations, methods of indication, and the factors affecting its value. This online metric bolt torque calculator is used to find the torque of the ecoguard, lubricated and dry metric bolts. I used Friction factor of 0. 8 8. Φ b = bolt diameter, mm (in. Q: What factors affect bolt torque? A: Bolt torque is affected by several factors, including the bolt tightening factor, bolt diameter, and bolt proof load. Aug 5, 2024 · To calculate a bolt length, multiply the bolt diameter by 2, then add in any additional material thicknesses. 1) C: nd: Integrated joint stiffness constant. Color Science - ASSIST GAI Calculator (Excel) Color Science - TM-30-18/20 Excel Calculator; Mechanical - Bolt Torque Calculator Paul Sims December 19, 2021 12:15 Updated material database for clamping plates (mat_p_2. 2 calculation made in Excel, I believe that's a good start (rather than jumping to PVElite or Compress). The Bolt Torque Calculator is a free tool that helps determine the correct rotational force needed to tighten a bolt. 8 x 3000 = 47400 ≤ 70000, and the suitability is confirmed. . 5 series which seldom calculate to appendix 2 rules. for the ultimate tensile strength of a 5/8″ mild steel bolt. A company providing an Ultrasonics tensions system - Very Informative Web site; MITCALC. It calculates the center of the connection and the bolts shear forces along each axis. This torque creates Engineers, follow the formula from EN 1090-2 to calculate required torque reference value for each step of tightening. · The fatigue strength of bolt under repeated load should not exceed the specified tolerance. exerted by the maximum allowable working pressure on the area bounded by 3 days ago · Screw Torque Formula Explanation. 2-0,2% proof stress of the bolt according to DIN EN ISO 898-1, D Km-Effective diameter for the friction moment Listed values apply only to ASTM A193 Grade B7 and A193 Grade B16 Stud Bolts; The Final Torque Value accounts for 10% bolt relaxation; Listed values do not apply to stud bolts and nuts with PTFE or other coatings; CAUTION: Care should be used when applying a formula for torque/tension relationships. Bolt Data: Size: Coarse K Factor is a torque coefficient between bolt and receptacle. The amount of force on a fastener is called as torque. 4 days ago · The standardization of torque values for different applications became necessary with the industrial revolution, leading to the establishment of calculation methods and tools to ensure reliable and repeatable results. H. Gasket Calculator 6. 5mm, the net tensile area is 245mm^2 and the proof load is 110,250N, requiring a torque of 331N In general, bolts experience two types of external forces: axial and shear. com. rkpke wryhm vvntb qhfjvi xxov ozoy wgnzfpfa lgcvqi kbafq xktg