Bevel Gear Calculator
Straight bevel gear geometry for 90° shaft angle — cone angles, diameters, virtual teeth
Module — m
Pinion Teeth — z₁
teeth
Gear Teeth — z₂
teeth
Pressure Angle — α
Face Width — b
mm
Pinion Speed — optional
RPM
Shaft angle Σ = 90° (standard). Face width b ≤ R/3 and ≤ 10m recommended for good load distribution.
Ratio & Cone Angles
Gear Ratio i
—
Pinion Pitch Cone Angle δ₁
— °
Gear Pitch Cone Angle δ₂
— °
Pinion Face Angle δa₁
— °
Gear Face Angle δa₂
— °
Pinion Root Angle δf₁
— °
Gear Root Angle δf₂
— °
Pitch Cone Geometry
Cone Distance R
— mm
Mean Cone Distance Rm
— mm
Pinion Ref PCD d₁
— mm
Gear Ref PCD d₂
— mm
Pinion Mean PCD dm₁
— mm
Gear Mean PCD dm₂
— mm
b/R Ratio
—
Tip & Root Diameters
Pinion Tip Dia da₁
— mm
Gear Tip Dia da₂
— mm
Pinion Root Dia df₁
— mm
Gear Root Dia df₂
— mm
Back Cone Radius rb₁
— mm
Back Cone Radius rb₂
— mm
Virtual Teeth zv₁
—
Virtual Teeth zv₂
—
Speed
Output Speed n₂
— RPM
Pitch Line Velocity
— m/s