MP-40 · GEARS

Spur Gear Tooth Force

Calculate tangential and radial spur-gear tooth force from transmitted torque, pitch diameter, and pressure angle.

Preliminary design support. Your inputs and results stay in this browser.

INPUTS

Next decision: Calculate helical gear axial force

Want to learn more? Gear Concepts: Geometry, Force, Thrust and Ratio

WHAT THIS SCREEN ANSWERS

Gear torque becomes a tangential mesh force at the pitch diameter, while pressure angle creates a radial bearing load. The engine resolves those two basic force components from entered torque, pitch diameter, and pressure angle. A credible early estimate makes its basis easy to challenge.

Tooth strength and life depend on face width, module, material, quality, contact ratio, dynamic loading, lubrication, alignment, and load distribution. Use the result to establish a preliminary force path, then confirm exact gear ratings and bearing consequences with the applicable method. This is where a catalogue value alone can mislead.

Gear torque becomes a tangential mesh force at the pitch diameter, while pressure angle creates a radial bearing load. Tooth strength and life depend on face width, module, material, quality, contact ratio, dynamic loading, lubrication, alignment, and load distribution. Compare alternatives on the same basis before treating one as preferable.

The engine resolves those two basic force components from entered torque, pitch diameter, and pressure angle. Use the result to establish a preliminary force path, then confirm exact gear ratings and bearing consequences with the applicable method. The decision remains specific to this application because gear torque becomes a tangential mesh force at the pitch diameter, while pressure angle creates a radial bearing load. Turn the remaining unknowns into a short verification list.