Static Load on Ball of Ball Bearing from Stribeck's Equation Calculator

Stribeck's Equation:

\[ C_o = \frac{k \cdot d_b^2 \cdot z}{5} \]

Static Load on Bearing:

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1. What is Stribeck's Equation?

Stribeck's Equation calculates the static load capacity of ball bearings. It provides an estimate of the maximum static load that a ball bearing can withstand without permanent deformation, based on the bearing's geometric properties and material characteristics.

2. How Does the Calculator Work?

The calculator uses Stribeck's Equation:

\[ C_o = \frac{k \cdot d_b^2 \cdot z}{5} \]

Where:

\( C_o \) — Static load on bearing (N)
\( k \) — K factor (Pa), depends on material properties and curvature radii
\( d_b \) — Ball diameter of a bearing (m)
\( z \) — Number of balls in bearing

Explanation: The equation calculates the maximum static load capacity based on the ball diameter squared, number of balls, and material constant.

3. Importance of Static Load Calculation

Details: Accurate static load calculation is crucial for bearing selection, ensuring the bearing can withstand applied loads without permanent deformation, and preventing premature bearing failure in static applications.

4. Using the Calculator

Tips: Enter K factor in Pascals, ball diameter in meters, and number of balls. All values must be positive numbers greater than zero.

5. Frequently Asked Questions (FAQ)

Q1: What is the K factor in Stribeck's equation?
A: The K factor is a material constant that depends on the moduli of elasticity of the bearing materials and the radii of curvature at the contact points.

Q2: When should static load capacity be considered?
A: Static load capacity should be considered when bearings are subjected to heavy loads while stationary or during very slow rotation.

Q3: How does ball diameter affect static load capacity?
A: Static load capacity increases with the square of the ball diameter, making larger balls significantly increase bearing capacity.

Q4: What are typical K factor values?
A: K factor values typically range from 500-1000 MPa for steel bearings, but exact values depend on specific material properties and geometry.

Q5: Can this equation be used for all bearing types?
A: This equation is specifically designed for ball bearings. Other bearing types (roller, needle, etc.) have different static load calculation methods.