Helical Gear Design Calculator | Gear Ratio, Teeth & Module Tool

Helical gear design Tool Formula:

Transverse Module (m_t):

\[ m_{t} = \frac{P_{d}}{N} \]

(where m_t = transverse module, P_d = pitch diameter, N = number of teeth)

Normal Module (m_n):

\[ m_{n} = m_{t} \times cos(\beta) \]

Pitch Diameter (P_d):

\[ P_{d} = m_{t} + N \]

Outside Diameter (O_d):

\[ P_{d} = (N + 2) \times m_{t} \]

The Helical Gear Design Calculator is the tool used by engineers, students, and educators to design helical gears for power transmission in mechanical systems. Helical gears have angled teeth, which make them transmit torque between parallel and crossed shafts smoothly, quietly, and efficiently.

The users are allowed to enter the desired gear ratio, number of teeth, module, pitch circle diameter (PCD), or helix angle. The calculator calculates the gear ratio, number of teeth per pinion and gear, module, pitch circle diameter, helix angle, and center distance. The formulas to calculate the velocity ratio, module, PCD, and helix angle are explained in steps, which are simple to maximize gear design to achieve torque, speed, and smooth engagement.

SI units are acceptable: mm in the case of diameters, module, and center distance. This software is suitable for mechanical and design engineers, students, and teachers concerned with gearboxes, robotics, automotive, and industrial machinery in designing helical gears with proper and dependable designs.