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Length of Square Key Formula

GoLength of Rectangular Key Formula

GoLength of Key based on Crushing Stress in Key Formula

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The Length of Key is defined as the length of the key which is used to prevent rotation of a machine component or it is the major dimension of the key. Check FAQs

l = 1.5 \cdot (d shaft)

l - Length of Key?d_shaft - Diameter of Shaft?

Length of Square Key Example

With values

With units

Only example

Here is how the Length of Square Key equation looks like with Values.

Here is how the Length of Square Key equation looks like with Units.

Here is how the Length of Square Key equation looks like.

18 = 1.5 \cdot (12)

18mm = 1.5 \cdot (12mm)

18 = 1.5 \cdot (12)

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Length of Square Key Solution

Follow our step by step solution on how to calculate Length of Square Key?

FIRST Step Consider the formula

l = 1.5 \cdot (d shaft)

Next Step Substitute values of Variables

∴

l = 1.5 \cdot (12mm)

Next Step Convert Units

∴

l = 1.5 \cdot (0.012m)

Next Step Prepare to Evaluate

∴

l = 1.5 \cdot (0.012)

Next Step Evaluate

∴

l = 0.018m

LAST Step Convert to Output's Unit

∴

l = 18mm

Length of Square Key Formula Elements

Variables

Length of Key

The Length of Key is defined as the length of the key which is used to prevent rotation of a machine component or it is the major dimension of the key.

Symbol: l

Measurement: LengthUnit: mm

Note: Value should be greater than 0.

Formulas to find Length of Key

Diameter of Shaft

Diameter of Shaft is defined as the diameter of the hole in the iron laminations that contains the shaft.

Symbol: d_shaft

Measurement: LengthUnit: mm

Note: Value should be greater than 0.

Formulas to find Diameter of Shaft

Other Formulas to find Length of Key

Go Length of Rectangular Key

l = 1.5 \cdot (d shaft)

Go Length of Key based on Crushing Stress in Key

l = \frac{F \cdot 2}{f c \cdot t}

Other formulas in Design of Key category

Go Tangential Force at Circumference of Shaft

F = \frac{T m}{\frac{d shaft}{2}}

Go Shear Strength of Key

F = (l) \cdot (b k) \cdot f s

Go Crushing Strength of Key

F = (l) \cdot (\frac{t}{2}) \cdot f c

Go Crushing Stress in Key

f c = \frac{F \cdot 2}{t \cdot l}

How to Evaluate Length of Square Key?

Length of Square Key evaluator uses Length of Key = 1.5*(Diameter of Shaft) to evaluate the Length of Key, The Length of Square Key formula is based on the criteria of the diameter of shaft. The dimensions of a key are found are either by empirical relations or from standard tables. Length of Key is denoted by l symbol.

How to evaluate Length of Square Key using this online evaluator? To use this online evaluator for Length of Square Key, enter Diameter of Shaft (d_shaft) and hit the calculate button.

FAQs on Length of Square Key

What is the formula to find Length of Square Key?

The formula of Length of Square Key is expressed as Length of Key = 1.5*(Diameter of Shaft). Here is an example- 18000 = 1.5*(0.012).

How to calculate Length of Square Key?

With Diameter of Shaft (d_shaft) we can find Length of Square Key using the formula - Length of Key = 1.5*(Diameter of Shaft).

What are the other ways to Calculate Length of Key?

Here are the different ways to Calculate Length of Key-

Length of Key=1.5*(Diameter of Shaft)
Length of Key=(Tangential Force*2)/(Crushing Stress in Key*Thickness of Key)

Can the Length of Square Key be negative?

No, the Length of Square Key, measured in Length cannot be negative.

Which unit is used to measure Length of Square Key?

Length of Square Key is usually measured using the Millimeter[mm] for Length. Meter[mm], Kilometer[mm], Decimeter[mm] are the few other units in which Length of Square Key can be measured.

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