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Length of Rectangular Key Formula

GoLength of Square 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 Rectangular Key Example

With values

With units

Only example

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

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

Here is how the Length of Rectangular 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 Rectangular Key Solution

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

Length of Rectangular Key evaluator uses Length of Key = 1.5*(Diameter of Shaft) to evaluate the Length of Key, The Length of Rectangular 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 Rectangular Key using this online evaluator? To use this online evaluator for Length of Rectangular Key, enter Diameter of Shaft (d_shaft) and hit the calculate button.

FAQs on Length of Rectangular Key

What is the formula to find Length of Rectangular Key?

The formula of Length of Rectangular 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 Rectangular Key?

With Diameter of Shaft (d_shaft) we can find Length of Rectangular 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 Rectangular Key be negative?

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

Which unit is used to measure Length of Rectangular Key?

Length of Rectangular 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 Rectangular Key can be measured.

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