Enter the tangential load (lbs), the pitch (1/in), the Lewis factor, and the face width (in) into the Gear Strength Calculator. The calculator will evaluate the Gear Strength.

## Gear Strength Formula

The following formula is used to calculate the Gear Strength.

**GS = TL * P / (F*Y)**

Variables:

- GS is the Gear Strength (PSI)
- TL is the tangential load (lbs)
- P is the pitch (1/in)
- F is the face width (in)
- Y is the Lewis Factor

## How to Calculate Gear Strength?

The following steps outline how to calculate the Gear Strength.

- First, determine the tangential load (lbs).
- Next, determine the pitch (1/in).
- Next, determine the face width (in).
- Next, determine the Lewis Factor.
- Next, gather the formula from above = GS = TL * P / (F*Y).
- Finally, calculate the Gear Strength.
- After inserting the variables and calculating the result, check your answer with the calculator above.

**Example Problem:**

Use the following variables as an example problem to test your knowledge.

tangential load (lbs) = 500

pitch (1/in) = 2

face width (in) = 3

Lewis Factor (dimensionless) = .25

GS = TL * P / (F*Y) =** ** ?