Winch Maintenance: spindle bearings, intermediate shaft bearings, couplings and a floating open gear and other positions requiring lubrication should be changed regularly or calcium based grease. The remaining parts should be lubricated before each drive lubrication. Electro-hydraulic thrusters should bear synthetic spindle oil or transformer oil. Use the winch should be equipped with full-time drivers and skilled maintenance personnel. Mine shaft sinking winch: Winch load test. Test requirements: 10 tons sinking winch winch test how much money should be placed in the base level of 10 tons sinking winch manufacturer, installation should be solid and reliable; test shall be carried out at the rated voltage, the rated voltage limit deviation ± 5%; by 25%, 50%, 75% and 100% of rated load progressively loaded, each running less than 30min.