ENGINEERING CALCULATORS
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Engineering calculators (Beta)
Estimate tightening preload and nominal tensile stress using a nut factor.
Click the grid to add ordered vertices. Edit coordinates in mm; separate holes with a blank line. The last vertex closes to the first automatically.
Choose units and enter numbers. Full-width digits and fractions such as 1/8 or 1 3/8 are accepted. Changing a unit converts the entered value.
Reference calculation only. Results do not certify suitability for an actual design or its safety.
Inputs: select a blue symbol to edit Results: red-orange values and lines
3D shows an illustrative extrusion. Its display length does not enter the section calculations. Edit dimensions in 2D.
T ≈ KFd, F ≈ T/(Kd), σnom = F/As
Displayed values are rounded. Diagrams illustrate the calculation conditions. Initial material and fluid properties are examples; replace them with values for the actual material, temperature and conditions.
ReferenceEquations assume particular loads, supports and deformation ranges. Check inputs, units and the applicability of each equation. Diagrams explain conditions; they are not manufacturing drawings or proof of safety.
Material values are typical values or reference ranges, not certified product properties or ready-to-use design allowables. They vary with standards, product form, dimensions, temper and temperature. Check the specifications and inspection certificates for the actual product.
Displayed safety factors and checks apply only to the supplied inputs and calculation model. They do not automatically establish the safety of a complete design, including code compliance, service life, fatigue or joints. For actual design, manufacture and use, separately verify applicable regulations and standards, product specifications, and the necessary tests and engineering review.
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トルク係数法でボルトの締付け軸力と公称引張応力を概算します。
選択した形状・計算方法により、使う項目は変わります。実際の計算は上の図と入力欄で行えます。
T ≈ KFd, F ≈ T/(Kd), σnom = F/As
トルク係数Kによる概算です。Kは材質・表面処理・潤滑・座面・再使用で変わり、入力例を規定値として使わないでください。Asは実際のねじ規格・ピッチの引張応力面積を指定します。公称応力は締付け時のねじりとの合成応力ではありません。軸力のばらつき、外力分担、緩み、座面圧、疲労、ねじ山の破壊、耐力・許容トルクは判定しません。
現在選択中の方法には、操作欄の「計算式・適用条件」を使ってください。参考計算であり、設計全体の安全性を保証するものではありません。
Estimate tightening preload and nominal tensile stress using a nut factor.
The selected model determines which of these inputs and outputs apply. Use the working diagram and input panel above to calculate.
T ≈ KFd, F ≈ T/(Kd), σnom = F/As
Nut-factor estimate. K depends on material, finish, lubrication, bearing surface and reuse; the example is not a prescribed value. Specify tensile stress area for the actual thread standard and pitch. Nominal stress does not include tightening torsion. Preload scatter, external-load sharing, loosening, bearing pressure, fatigue, thread stripping, proof strength and allowable torque are not assessed.
The displayed formula and conditions in the working panel apply to the currently selected model. Reference calculation only; it does not certify a complete design.
図で条件を整理してから計算し、最後に実際の部品仕様を確認します。
Understand conditions with diagrams, calculate, then verify actual specifications.
ねじ径とトルク係数も指定します。係数は摩擦・潤滑などの条件で変わります。
各ツールは別の条件で開きます。数値は自動転記されません。Also supply bolt diameter and torque coefficient. The coefficient depends on friction and lubrication.
Each tool opens with its own conditions. Values are not transferred automatically.Introduce diámetro y coeficiente de par. Este coeficiente depende de la fricción y lubricación.
Cada herramienta usa sus propias condiciones. Los valores no se transfieren automáticamente.Informe diâmetro e coeficiente de torque. O coeficiente varia com atrito e lubrificação.
Cada ferramenta usa condições próprias. Os valores não são transferidos automaticamente.Durchmesser und Drehmomentbeiwert eingeben. Der Beiwert hängt von Reibung und Schmierung ab.
Jedes Werkzeug verwendet eigene Bedingungen. Werte werden nicht automatisch übertragen.Indiquez diamètre et coefficient de couple. Ce coefficient dépend du frottement et de la lubrification.
Chaque outil utilise ses propres conditions. Les valeurs ne sont pas transférées automatiquement.बोल्ट का व्यास और टॉर्क गुणांक भी दें। गुणांक घर्षण और स्नेहन पर निर्भर करता है।
हर टूल की शर्तें अलग हैं। मान अपने-आप स्थानांतरित नहीं होते।Masukkan diameter dan koefisien torsi. Koefisien bergantung pada gesekan dan pelumasan.
Setiap alat memakai kondisi sendiri. Nilai tidak dipindahkan secara otomatis.볼트 지름과 토크 계수도 입력합니다. 계수는 마찰과 윤활 조건에 따라 달라집니다.
각 도구는 별도의 조건으로 열립니다. 수치는 자동으로 전달되지 않습니다.