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Lubricate the chain in time, safe to wear

Release time: 16-05-2018
Summary:

There are three basic types of chains, which are: ductile iron chains, sleeve roller chains and toothed chains. In the long-term use of the chain, the chain will inevitably wear out. At this time, it is necessary to use a lubricant that is conducive to the operation of the chain.

There are three basic types of chains, which are: ductile iron chains, sleeve roller chains and toothed chains. In the long-term use of the chain, the chain will inevitably wear out. At this time, it is necessary to use a lubricant that is conducive to the operation of the chain.

Chain

Requirements and selection of lubricants for chains

1. The oil film will be damaged at the moment of high-speed impact on the chain; therefore, it is required that the selected lubricating oil can re-form the oil film. When the oil is liquid at the operating temperature and can maximize the function of the capillary, the oil film will re-form. In addition, pay attention to the parts with small gaps, whose high viscosity oil has poor fluidity and permeability, which will prevent continuous lubrication of the contact surface.

2. The type of chain link determines the gap of the chain, and the gap should be large enough for oil to enter. When the chain is in the presence of abrasive, chemical gas or moisture, the load will increase the burden on the lubricant. At this time, the lubricant has a dual effect-lubrication and protection.

3. For high temperature operation places, such as furnaces and conveyor chains, lubricants with molybdenum disulfide or graphite powder should be used, because these solid lubricants will deposit on the chain surface due to solvent volatilization under hot steam. In addition, at temperatures below 260 ° C, synthetic liquids such as chlorofluorocarbon polymers can also be used.

4. For a chain that is used periodically, it is best to soak the bearing in a kind of light oil filled with a fuel tank when the machine is stopped.

How to lubricate the chain

1. Brush lubrication. Use a brush or oiler to regularly refuel the inner and outer chain plate ring joints of the loose side of the chain, preferably after 8 hours of work. Its refueling amount and period should be sufficient to prevent the lubricating oil at the joints of the chain from changing color.

2, drip oil lubrication. Use an oil drip cup to drop the oil between the two hinged plates. The single-row chain drips about 5-20 drops of oil per minute, and more drops at high speeds. And the lubricant must be guided to the inside of the pin and the surface of the side plate.

3. Oil bath or oil pan lubrication. When lubricating with an oil bath, the lower chain is passed through the oil sump in the transmission. Its oil level should reach the pitch circle line at the lowest position of the chain.

4. Oil injection lubrication. Oil injection lubrication is a continuous flow of oil to each drive chain. Oil should be added to the inside of the chain link, just aligned with the link of the chain link, and guided evenly along the chain width on the loose side of the chain.