Length of Rectangular Key Solution

STEP 0: Pre-Calculation Summary
Formula Used
Length of Key = 1.5*(Diameter of Shaft)
l = 1.5*(dshaft)
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*(dshaft) --> 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)

Credits

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Created by Heet
Thadomal Shahani Engineering College (Tsec), Mumbai
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University of Hawaiʻi at Mānoa (UH Manoa), Hawaii, USA
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Design of Key Calculators

Crushing Strength of Key
​ LaTeX ​ Go Tangential Force = (Length of Key)*(Thickness of Key/2)*Crushing Stress in Key
Crushing Stress in Key
​ LaTeX ​ Go Crushing Stress in Key = (Tangential Force*2)/(Thickness of Key*Length of Key)
Shear Strength of Key
​ LaTeX ​ Go Tangential Force = (Length of Key)*(Width of Key)*Shear Stress in the Key
Tangential Force at Circumference of Shaft
​ LaTeX ​ Go Tangential Force = Maximum Torque/(Diameter of Shaft/2)

Length of Rectangular Key Formula

​LaTeX ​Go
Length of Key = 1.5*(Diameter of Shaft)
l = 1.5*(dshaft)

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 (dshaft) 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*(dshaft) 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 (dshaft). 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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