How should gearbox selection be evaluated when buying an automatic cooking machine?

To sign off a gearbox, cook at full wok load first: run a few back-to-back batches of sweet-and-sour ribs or dry-fried beans and watch whether output torque holds, the ratio balances tossing force against plating tempo, the duty rating suits lunch-and-dinner peaks, and heat dissipation keeps temperature rise stable amid oil mist and high heat. Do not judge by motor kW alone: an oversized motor on an undersized gearbox can bottleneck on heavy stir-frying, showing up as pan shudder, louder noise or a drifting tossing trajectory. Accept the unit only after full-batch wok trials with logged noise, temperature rise and vibration curves.