Shandong Jining Guangtong Crane Co

1. The parts that need lubrication are the two ends of the hook pulley shaft and the thrust bearing under the hook nut.
Fix both ends of the pulley shaft (on the trolley frame).
Wire rope.
Each reducer (the vertical reducer with a large center distance has separate lubrication points at the high-speed first and second shaft bearings).
Each gear coupling.
Each bearing seat (including wheel set angular bearing box).
Motor bearings.
Each hinge point on the brake.
The piston part of the long stroke brake electromagnet.
Anti-roller.
Cable reels, cable trailers.
The upper and lower pulley shafts and guide rollers of the grab bucket.
The gears, screw rods and nodes on the rail clamp.
Deflection automatic adjustment device, etc.
2. Correct selection of lubricating oil
Correct and reasonable selection of hydraulic oil is the prerequisite for ensuring normal function. To choose hydraulic oil, first choose the type of oil, and then choose the appropriate viscosity, which is the label. The following factors need to be considered for specific implementation
The types of hydraulic pumps and hydraulic motors in the system. Pumps and motors are more sensitive to the viscosity of hydraulic oil and have higher requirements for working conditions. Therefore, the viscosity of oil used in general hydraulic systems is mostly selected based on Based on the pump, the valve conditions can basically be adapted.
Working Conditions of Small Crane Hydraulic System The greater the system working pressure, the higher the wear resistance requirements of the oil, and the higher the viscosity requirements.
Regarding the adaptability of materials, attention should be paid to the adaptability of hydraulic oil to sealing materials, metal materials, etc. Otherwise, phenomena such as paint dissolution, seal swelling, and metal corrosion may occur.
Economy, in order to extend the service life of hydraulic oil and fluid, save maintenance costs, extend the service life of hydraulic components and improve operating efficiency, high-quality hydraulic oil and fluid should be selected.
Viscosity and viscosity index of hydraulic oil for small cranes. After selecting the type of hydraulic oil, you need to select hydraulic oil with appropriate viscosity and viscosity index. If the viscosity is too high, the system pressure loss will increase, the temperature will rise, it will be difficult for the hydraulic pump to absorb oil, the operation will be unstable, and undesirable phenomena such as buzzing sounds will occur. When the viscosity of the hydraulic oil is too low, internal and external leakage will increase, the efficiency of the hydraulic pump will decrease, and the wear of the sliding parts will increase.