Work out stopping time of machine instantly with clear inputs, formula shown and shareable results.
Deceleration time follows from angular momentum: inertia times angular velocity divided by braking torque. Total stopping time adds the control and brake engagement delay, during which the machine runs at full speed. It is total stopping time, not braking time, that feeds the safety distance calculation.
Deceleration time
t = I x omega / brake torque, omega = 2 pi rpm / 60
Total stopping time
Total = deceleration time + response delay
Preliminary estimate only. Stopping performance must be measured with a stop time analyser and used to verify safety distances by a competent person.
t = I x omega / brake torque, omega = 2 pi rpm / 60. Deceleration time follows from angular momentum: inertia times angular velocity divided by braking torque.
Brake linings wear and response times drift, so stopping performance degrades. Standards require periodic measurement because the safety distance depends on it directly.
This calculator takes 4 inputs: Braking torque, Moment of inertia referred to the brake, Operating speed, Control and brake response time. The pre-filled defaults are a realistic worked example — replace them with your own site or project figures.