Typical friction coefficient for brakes?

Organic pads: 0.3–0.4, Semi-metallic: 0.35–0.45, Ceramic: 0.4–0.5.

Max pressure for brake pads?

5–10 MPa for passenger cars, higher for racing.

AutoEngCalc - Engineering Calculators

Design disc and drum brakes: calculate rotor/drum diameter, pad/shoe area, actuating force and heat dissipation from required braking torque.

Disc Diameter

Ø 320 mm

For 800 Nm torque, μ=0.4, p=8 MPa

Featured: Single Piston Disc, Internal Shoe Drum • Torque & Heat

Required Torque per Brake (Nm)

Max Wheel Speed (RPM)

Brake Type

Friction Coefficient μ

Max Pad/Shoe Pressure (MPa)

Service Factor

T = 2 × μ × F × R_eff
F = p × A_pad

T = μ × W × R_drum × (amplification factor)

Enter parameters and click Calculate

Excellent heat dissipation, consistent performance.

Self-energizing, higher torque for same force.

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