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Chains are widely used in machinery and equipment

Release time: 22-06-2018
Summary:

Chain is one of the mechanical transmission parts. Because it has many excellent characteristics such as accurate power transmission, stable transmission, constant speed ratio, strong adaptability, not affected by size, and easy maintenance, it is widely used in various mechanical equipment. .

Chain is one of the mechanical transmission parts. Because it has many excellent characteristics such as accurate power transmission, stable transmission, constant speed ratio, strong adaptability, not affected by size, and easy maintenance, it is widely used in various mechanical equipment. .

Chain

Structure of the chain

Most chains are made up of chain plates, chain pins, shaft sleeves and other components. Other types of chains only make different changes to the chain plates according to different needs, some are equipped with scrapers on the chain plates, some are equipped with guide bearings on the chain plates, and some are equipped with rollers on the chain plates.

The main lubricating parts of the chain

For ordinary chains, the lubricating parts are mainly rollers, chain shafts and bushings of sprocket and chain. Due to the different structure of the chain, the lubrication position of the chain may also change. But in most chains, the lubrication part is mainly the rollers, sprocket and bushings of the sprocket and chain.

Because the matching clearance between the shaft of the chain and the sleeve is small, lubrication is difficult. For special chains, such as chains equipped with bearings, rollers and other friction pairs, the lubrication of these friction pairs must also be considered.

Lubricant requirements for chain drives

1.Excellent permeability

For a chain, it is easier to lubricate rollers and sprockets, but it is more difficult to lubricate the chain shaft and sleeve. Because the gap between the shaft and the sleeve is very small, and it is completely in open environmental conditions, if the lubricant does not have good permeability, it cannot penetrate into the inside of the shaft and the sleeve, and it cannot lubricate the shaft and the sleeve .

2. Must have excellent adhesion

When the chain is running, the lubricating oil will be thrown off due to high speed; at low speed, the lubricating oil will drip due to gravity. And this will not only pollute the environment, but also cause a lot of waste. Therefore, it is required to have good adhesion of the lubricating oil, which can be firmly adhered to the surface of the chain without falling off due to various actions.

3.Excellent lubrication performance

One of the most important functions of lubricating oil is lubrication, but because the chain is subjected to different functions during operation, the lubrication performance of the lubricating oil is more demanding; especially those chains under heavy load and impact conditions have extreme pressure and anti-wear The performance requirements are very high. Therefore, the general chain lubricants pay great attention to this requirement.

In addition, the chain transmission is in an exposed environment. Therefore, the chain lubricant must have a very small evaporation loss rate, have good resistance to external effects, have the characteristics of no pollution, and have the smallest tendency to deposit carbon. Wait.