Winch Maintenance: winch for each lubrication point should pay attention to regular refueling. Reducer adopted on the 28th or the 24th of the cylinder oil mill oil or winter gear oil. Its oil worm should ensure all immersed in oil and depends on the cleanliness of the oil regularly replaced with new oil. Reducer rolling bearings at filling calcium-based grease. Mine shaft sinking winch: reducer load test. Sales at rated speed sinking winch 10 tons, 25%, 50%, 75% of the rated load progressively loaded 10 tons sinking winch manufacturer, each running 30min; 100% of rated load continuous load, until temperature equilibrium 10min After, with an accuracy not less than ± 0.5% oil temperature thermometer; Check gear Worm, worm and gear pair contact spots.