Pitch Circle Diameter of Bushes or Pins of Coupling Calculator

Pitch Circle Diameter Formula:

\[ D_p = \frac{2 \times M_t}{N \times P} \]

Torque Transmitted By Coupling:

Number of Pins in Coupling:

Force on Each Rubber Bush or Pin:

Pitch Circle Diameter (D_p): m

Definition: This calculator determines the diameter of the circle that passes through the center of all the pins in a coupling.

Purpose: It helps mechanical engineers and designers properly size coupling components for power transmission systems.

The calculator uses the formula:

\[ D_p = \frac{2 \times M_t}{N \times P} \]

Where:

Explanation: The torque is divided by the total pin force capacity to determine the required diameter.

Details: Proper calculation ensures even load distribution among pins and prevents premature coupling failure.

Tips: Enter the torque value, number of pins, and force per pin. All values must be positive. Results include ±5% tolerance.

Q1: What is the typical tolerance for these calculations?
A: Most engineering applications use ±5% tolerance for coupling dimensions.

Q2: How do I determine the force on each pin?
A: This depends on material properties and design specifications. Consult manufacturer data.

Q3: Does pin count affect diameter significantly?
A: Yes, more pins allow smaller diameter for same torque capacity, but space evenly.

Q4: What units should I use?
A: Use consistent SI units: Nm for torque, N for force, results in meters.

Q5: How does this relate to coupling selection?
A: This calculation helps verify if a coupling meets torque requirements.