Spur Gear Dimensions

Calculate involute spur gear geometry including pitch/outside diameters and depths.

Inputs

Pillars of Measurement

Diametral Pitch

Pressure Angle

Number of Teeth (Gear 1)

Mating Teeth (Gear 2)

Gear Formulas (DP System):
Pitch Dia (PD) = N / DP
Outside Dia (OD) = (N + 2) / DP
Whole Depth = 2.157 / DP or 2.2 / DP (Depends on PA)
Center Distance = (N1 + N2) / (2 × DP)

Results: Gear 1 (N=24)

Pitch Diameter (PD)

0.0000

Outside Diameter (Blank)

0.0000

Whole Depth

0.0000

Circular Pitch

0.0000

Assembly

Center Distance

0.0000

Ratio

1.0 : 1