# Gear Ratio Formula Teeth

### Developing the Gear Ratio Formula

ships. Students derive the formula for finding the gear ratio of a pair of gears: gear ratio = teeth in driven gear/teeth in driver gear. Rationale Students express the gear rotation relationships mathematically. They investigate the concept of ratio. They find the gear ratio for trains of simple gears. Students will engage in the following: More Information

### Gear terminology and teeth calculation formulas easy guide ...

The gear ratio i=d2/d1. d1 and d2 refer to the reference diameters of 2 mating gears (gear 1 ... More Information

### What is Gear ratio? [How to calculate Gear Ratio with Formula]

This ratio can be expressed as the number of gear teeth divided by the number of pinion teeth. So in this example, since there are 54 teeth on the larger gear and 18 teeth on pinion. There’s a ratio of 54 to 18 or 3 to 1 this means that pinion is turning at three times the speed of the gear. More Information

### Steps to calculate a gear ratio – Blog CLR

The gear ratio is calculated by dividing the output speed by the input speed (i= Ws/ We) or by dividing the number of teeth of the driving gear by the number of teeth of the driven gear (i= Ze/ Zs). More Information

### How To Calculate Gear Ratio - HBReducer

Divide the number of teeth on each “driven” gear by the number of teeth on the “drive” gear for each interlocking set of gears to calculate the intermediate gear ratios. In our example, the intermediate gear ratios are 20/7 = 2.9 and 30/20 = 1.5. Note that neither of these are equal to the gear ratio for the entire train, 4.3. More Information

### Gear Design Equations and Formula | Circular Pitches and ...

a G = Addendum of Gear a P = Addendum of Pinion b = Dedendum c = Clearance C = Center Distance D = Pitch Diameter D G = Pitch Diameter of Gear D P = Pitch Diameter of Pinion D B = Base Circle Diameter D O = Outside Diameter DR = Root Diameter F = Face Width h k = Working Depth of Tooth h t = Whole Depth of Tooth m G = Gear Ratio N = Number of Teeth N G = Number of Teeth in Gear More Information

### How to Calculate Gear Ratios? What are the Gears?

The ratio is the number of teeth on the driven gear (ring gear) divided by the number of teeth on the driving gear (pinion gear). For eg, if the driven gear has 36 teeth and the driving gear has 12 teeth, the gear ratio will be 3:1. This also means that for every one driven gear the driving gear … More Information

### Gears, Velocity Ratios and Mechanical Advantage

Gear Ratio • You can think of gear ratio as a multiplier on speedand a divider on torque. • You can calculate the gear ratio by using the number of teeth of the “driving gear" (a.k.a. the inputgear) divided by the number of teeth of the “driven gear” (a.k.a. the outputgear). More Information

### Steps to calculate a gear ratio – Blog CLR

Calculating the gear ratio of a gear train. In the case of a gear train with two gears, we need to do the following steps: Count the number of teeth. First, we will need to count the number of teeth of the driving gear and the number of teeth of the driven gear. Divide the number of teeth of the driven gear by the number of teeth … More Information