Length of Rectangular Key Calculator

✖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.ⓘ Length of Rectangular Key [l]

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Formula

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Length of Rectangular Key

Formula

`"l" = 1.5*("d"_{"shaft"})`

Example

`"18mm"=1.5*("12mm")`

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Length of Rectangular Key Solution

STEP 0: Pre-Calculation Summary

Formula Used

Length of Key = 1.5*(Diameter of Shaft)
l = 1.5*(d_shaft)
This formula uses 2 Variables

Variables Used

Length of Key - (Measured in Meter) - 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.
Diameter of Shaft - (Measured in Meter) - Diameter of Shaft is defined as the diameter of the hole in the iron laminations that contains the shaft.

STEP 1: Convert Input(s) to Base Unit

Diameter of Shaft: 12 Millimeter --> 0.012 Meter (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

l = 1.5*(d_shaft) --> 1.5*(0.012)

Evaluating ... ...

l = 0.018

STEP 3: Convert Result to Output's Unit

0.018 Meter -->18 Millimeter (Check conversion here)

FINAL ANSWER

18 Millimeter <-- Length of Key

(Calculation completed in 00.004 seconds)

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Thadomal Shahani Engineering College (Tsec), Mumbai

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< 8 Design of Key Calculators

Length of Key based on Crushing Stress in Key

Go Length of Key = (Tangential Force*2)/(Crushing Stress in Key*Thickness of Key)

Thickness of Key based on Crushing Stress

Go Thickness of Key = (Tangential Force*2)/(Crushing Stress in Key*Length of Key)

Crushing Strength of Key

Go Tangential Force = (Length of Key)*(Thickness of Key/2)*Crushing Stress in Key

Crushing Stress in Key

Go Crushing Stress in Key = (Tangential Force*2)/(Thickness of Key*Length of Key)

Shear Strength of Key

Go Tangential Force = (Length of Key)*(Width of Key)*Shear Stress in the Key

Tangential Force at Circumference of Shaft

Go Tangential Force = Maximum Torque/(Diameter of Shaft/2)

Length of Rectangular Key

Go Length of Key = 1.5*(Diameter of Shaft)

Length of Square Key

Go Length of Key = 1.5*(Diameter of Shaft)

Length of Rectangular Key Formula

Length of Key = 1.5*(Diameter of Shaft)
l = 1.5*(d_shaft)

What is the main function of Keys?

Shafts and hubs are usually fastened together by means of keys. The main function of a key is to transmit the torque preventing relative motion between a shaft and a machine part assembled on it. Keys are used as temporary fasteners which can be easily disassembled. Keys are subjected to considerable crushing and shearing stresses.

How to Calculate Length of Rectangular Key?

Length of Rectangular Key calculator uses Length of Key = 1.5*(Diameter of Shaft) to calculate 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 calculate Length of Rectangular Key using this online calculator? To use this online calculator for Length of Rectangular Key, enter Diameter of Shaft (d_shaft) and hit the calculate button. Here is how the Length of Rectangular Key calculation can be explained with given input values -> 18000 = 1.5*(0.012).

FAQ

What is Length of Rectangular 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 and is represented as l = 1.5*(d_shaft) or Length of Key = 1.5*(Diameter of Shaft). Diameter of Shaft is defined as the diameter of the hole in the iron laminations that contains the shaft.

How to calculate Length of Rectangular 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 is calculated using Length of Key = 1.5*(Diameter of Shaft). To calculate Length of Rectangular Key, you need Diameter of Shaft (d_shaft). With our tool, you need to enter the respective value for Diameter of Shaft and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

How many ways are there to calculate Length of Key?

In this formula, Length of Key uses Diameter of Shaft. We can use 2 other way(s) to calculate the same, which is/are as follows -

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

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