Bearing Temperature Calculator

This calculator helps determine the operating temperature of a bearing based on load, speed, and environmental conditions. It's essential for ensuring bearing longevity and performance.

Input Parameters

Calculation Results

Calculation Formula

T = Ta + (P × N × (η/η²) × K) / (Q × C)

Where:
T = Bearing Temperature (°C)
Ta = Ambient Temperature (°C)
P = Load (kN)
N = Rotational Speed (RPM)
η = Gearbox Efficiency (%)
K = Heat Dissipation Factor (typically 0.1-0.3 for ball bearings)
Q = Heat Transfer Coefficient (typically 10-20 W/m²K)
C = Bearing Surface Area (m²)

Predicted Bearing Temperature (°C):

Operating Status:

Bearing Temperature Calculator Calculator Usage Guide

Learn how to use the Bearing Temperature Calculator and its working principles for optimal bearing performance.

How to Use This Calculator

  1. Enter the load on the bearing in kilonewtons (kN).
  2. Input the rotational speed of the bearing in revolutions per minute (RPM).
  3. Specify the ambient temperature around the bearing in degrees Celsius (°C).
  4. Enter the number of bearings in the application.
  5. Adjust the gearbox efficiency percentage (default is 95%).
  6. Click the "Calculate" button to determine the predicted bearing temperature.

Understanding the Results

The calculator provides two key outputs:

  • Predicted Bearing Temperature: The calculated temperature of the bearing under the given conditions.
  • Operating Status: An assessment of whether the bearing is operating within normal, caution, or warning temperature ranges.

Important Notes

The calculator uses a simplified model for bearing temperature calculation. For precise applications, refer to bearing manufacturer specifications and consult engineering guidelines. Typical operating temperatures for ball bearings range from 20°C to 75°C. Temperatures above 75°C may require additional cooling measures or inspection.