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Pre Load in Bolt given Wrench Torque Formula

GoPre Load in Bolt given Elongation of Bolt Formula

GoPre Load in Bolt given Amount of Compression in Parts Joined by Bolt Formula

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Pre Load in Bolt is the tension created in a bolt when it is tightened. Check FAQs

P i = \frac{M t}{0.2 \cdot d}

P_i - Pre Load in Bolt?M_t - Wrench Torque for Bolt Tightening?d - Nominal Bolt Diameter?

Pre Load in Bolt given Wrench Torque Example

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Here is how the Pre Load in Bolt given Wrench Torque equation looks like with Values.

Here is how the Pre Load in Bolt given Wrench Torque equation looks like with Units.

Here is how the Pre Load in Bolt given Wrench Torque equation looks like.

16500 = \frac{49500}{0.2 \cdot 15}

16500N = \frac{49500N*mm}{0.2 \cdot 15mm}

16500 = \frac{49500}{0.2 \cdot 15}

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Pre Load in Bolt given Wrench Torque Solution

Follow our step by step solution on how to calculate Pre Load in Bolt given Wrench Torque?

FIRST Step Consider the formula

P i = \frac{M t}{0.2 \cdot d}

Next Step Substitute values of Variables

∴

P i = \frac{49500N*mm}{0.2 \cdot 15mm}

Next Step Convert Units

∴

P i = \frac{49.5N*m}{0.2 \cdot 0.015m}

Next Step Prepare to Evaluate

∴

P i = \frac{49.5}{0.2 \cdot 0.015}

LAST Step Evaluate

∴

P i = 16500N

Pre Load in Bolt given Wrench Torque Formula Elements

Variables

Pre Load in Bolt

Pre Load in Bolt is the tension created in a bolt when it is tightened.

Symbol: P_i

Measurement: ForceUnit: N

Note: Value should be greater than 0.

Formulas to find Pre Load in Bolt

Wrench Torque for Bolt Tightening

Wrench Torque for Bolt Tightening is defined as the torque required to create a load on fasteners such as a nut, bolt, or lag screw.

Symbol: M_t

Measurement: TorqueUnit: N*mm

Note: Value should be greater than 0.

Formulas to find Wrench Torque for Bolt Tightening

Nominal Bolt Diameter

Nominal Bolt Diameter is the diameter equal to the external diameter of the threads or the overall diameter of the part of the bolt.

Symbol: d

Measurement: LengthUnit: mm

Note: Value should be greater than 0.

Formulas to find Nominal Bolt Diameter

Other Formulas to find Pre Load in Bolt

Go Pre Load in Bolt given Elongation of Bolt

P i = ẟ b \cdot k b'

Go Pre Load in Bolt given Amount of Compression in Parts Joined by Bolt

P i = δ c \cdot k

Other formulas in Load and Strength Characteristics category

Go Tensile Force on Bolt given Maximum Tensile Stress in Bolt

P tb = σt max \cdot \frac{π}{4} \cdot {d c}^{2}

Go Tensile Force on Bolt in Tension

P tb = \frac{π}{4} \cdot {d c}^{2} \cdot \frac{S yt}{f s}

Go Tensile Force on Bolt in Shear

P tb = π \cdot d c \cdot h \cdot \frac{S sy}{f s}

Go Stiffness of Bolt given Thickness of Parts Joined by Bolt

k b' = \frac{π \cdot d^{2} \cdot E}{4 \cdot l}

How to Evaluate Pre Load in Bolt given Wrench Torque?

Pre Load in Bolt given Wrench Torque evaluator uses Pre Load in Bolt = Wrench Torque for Bolt Tightening/(0.2*Nominal Bolt Diameter) to evaluate the Pre Load in Bolt, Pre load in Bolt given Wrench Torque is defined as the tension created in a fastener when it is tightened. This tensile force in the bolt creates a compressive force in the bolted joint known as clamp force. For practical purposes, the clamping force in an unloaded bolted joint is assumed to be equal to and opposite to the preload. Pre Load in Bolt is denoted by P_i symbol.

How to evaluate Pre Load in Bolt given Wrench Torque using this online evaluator? To use this online evaluator for Pre Load in Bolt given Wrench Torque, enter Wrench Torque for Bolt Tightening (M_t) & Nominal Bolt Diameter (d) and hit the calculate button.

FAQs on Pre Load in Bolt given Wrench Torque

What is the formula to find Pre Load in Bolt given Wrench Torque?

The formula of Pre Load in Bolt given Wrench Torque is expressed as Pre Load in Bolt = Wrench Torque for Bolt Tightening/(0.2*Nominal Bolt Diameter). Here is an example- 16500 = 49.5/(0.2*0.015).

How to calculate Pre Load in Bolt given Wrench Torque?

With Wrench Torque for Bolt Tightening (M_t) & Nominal Bolt Diameter (d) we can find Pre Load in Bolt given Wrench Torque using the formula - Pre Load in Bolt = Wrench Torque for Bolt Tightening/(0.2*Nominal Bolt Diameter).

What are the other ways to Calculate Pre Load in Bolt?

Here are the different ways to Calculate Pre Load in Bolt-

Pre Load in Bolt=Elongation of Bolt*Stiffness of Bolt
Pre Load in Bolt=Amount of Compression of Bolted Joint*Combined Stiffness of Bolt

Can the Pre Load in Bolt given Wrench Torque be negative?

No, the Pre Load in Bolt given Wrench Torque, measured in Force cannot be negative.

Which unit is used to measure Pre Load in Bolt given Wrench Torque?

Pre Load in Bolt given Wrench Torque is usually measured using the Newton[N] for Force. Exanewton[N], Meganewton[N], Kilonewton[N] are the few other units in which Pre Load in Bolt given Wrench Torque can be measured.

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Pre Load in Bolt given Wrench Torque Formula

​GoPre Load in Bolt given Elongation of Bolt Formula

​GoPre Load in Bolt given Amount of Compression in Parts Joined by Bolt Formula

Pre Load in Bolt given Wrench Torque Example

Pre Load in Bolt given Wrench Torque Solution

Pre Load in Bolt given Wrench Torque Formula Elements

Other Formulas to find Pre Load in Bolt

Other formulas in Load and Strength Characteristics category

How to Evaluate Pre Load in Bolt given Wrench Torque?

FAQs on Pre Load in Bolt given Wrench Torque

Variable Name

GoPre Load in Bolt given Elongation of Bolt Formula

GoPre Load in Bolt given Amount of Compression in Parts Joined by Bolt Formula