1. What is Mean Radius of Spline of Shaft?

The Mean Radius of Spline of Shaft is defined as half the average of major and minor diameter of the spline. It is a critical parameter in determining the torque transmitting capacity of splined shafts.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( R_m \) — Mean Radius of Spline of Shaft (m)
• \( M_t \) — Transmitted Torque by Keyed Shaft (N·m)
• \( p_m \) — Permissible Pressure on Splines (Pa)
• \( A \) — Total Area of Splines (m²)

Explanation: The formula calculates the mean radius based on the transmitted torque, permissible pressure, and total spline area.

3. Importance of Mean Radius Calculation

Details: Accurate calculation of mean radius is crucial for proper spline design, ensuring adequate torque transmission capacity while maintaining structural integrity and preventing failure.

4. Using the Calculator

Tips: Enter transmitted torque in N·m, permissible pressure in Pa, and total area in m². All values must be positive and valid for accurate results.

5. Frequently Asked Questions (FAQ)

Q1: What is the significance of mean radius in spline design?
A: The mean radius determines the effective lever arm for torque transmission and influences the stress distribution across the spline teeth.

Q2: How does permissible pressure affect spline design?
A: Permissible pressure limits the maximum contact pressure between mating splines to prevent wear, deformation, and failure.

Q3: What factors influence the total area of splines?
A: Total area depends on the number of spline teeth, tooth dimensions, and engagement length between mating components.

Q4: Are there standard values for permissible pressure?
A: Permissible pressure values vary based on material properties, surface treatment, lubrication, and application requirements.

Q5: Can this formula be used for different spline profiles?
A: While the basic principle applies, specific profile characteristics may require additional considerations in detailed design calculations.