ENGINEERING CALCULATORS
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Engineering calculators (Beta)
Check average key shear, bearing stress and required effective length.
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.
Ft=2|T|/d; τ=Ft/(bLe); p=Ft/(cLe); Le,req=max[Ft/(bτa),Ft/(cpa)].
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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トルクを伝える平行キーの平均応力と、有効長さの必要量を別々に確認します。
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。
Ft=2|T|/d; τ=Ft/(bLe); p=Ft/(cLe); Le,req=max[Ft/(bτa),Ft/(cpa)].
1本の平行キーが均一に荷重を負担する平均応力モデルです。Leは端部の丸み等を除いた有効長さ、cはキー高さの半分と決めつけず実際に当たる深さを指定します。軸側とハブ側でc・paが異なる場合は各側を計算します。軸のキー溝による断面低下、応力集中、疲労、衝撃、緩み、複数キーの不等分担は含みません。
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。
Check average key shear, bearing stress and required effective length.
The selected model determines which of these inputs and outputs apply. Use the working diagram and input panel above to calculate.
Ft=2|T|/d; τ=Ft/(bLe); p=Ft/(cLe); Le,req=max[Ft/(bτa),Ft/(cpa)].
One parallel key with uniform average load sharing. Le excludes ineffective rounded ends. Enter actual engaged depth c, not automatically half the key height. Check shaft and hub sides separately if depth or allowable differs. Shaft weakening, stress concentration, fatigue, shock, looseness and unequal sharing between multiple keys are excluded.
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.
