Motorcycle chains can be divided into:
1, motorcycle sleeve chain
2, motorcycle roller chain
3, the car seal ring chain (oil chain, and is divided into O-ring chain and X-ring chain)
4, toothed chain (silent chain)
According to the use parts on the motorcycle, the motorcycle chain can be divided into two types: the engine inner chain and the engine outer chain. Most of the chains used in motorcycle engines are sleeve chains. The sleeve chain used in the engine can be further divided into a timing chain or a timing chain (cam chain), a balance chain and a pump chain (for a large displacement engine).
The motorcycle chain used outside the engine is the drive chain (or drive chain) used to drive the rear wheels. Most of them use roller chains (chains of individual specifications, such as 219h or 05ma are also used as transmission chains). The high-quality motorcycle chain includes a full range of motorcycle sleeve chains, motorcycle roller chains, motorcycle seal chains and motorcycle toothed chains (silent chains).
Motorcycle O-ring chain (oil seal chain) is a high-performance transmission chain designed for motorcycle road racing and racing. The chain features a special O-ring seal to seal the oil in the chain and isolate dust and dirt. The color of the chain can be divided into natural peening, golden (copper plating) and silver (nickel plating). Among them, the copper/nickel-plated motorcycle chain is usually copper or nickel plated on the inner and outer chain plates of the chain, and all parts can be plated. Copper or nickel plating. 
Oil seal chain:
The chain is filled with a certain amount of grease in the middle of the pin sleeve, which can reduce wear and prolong the service life; and because of the sealing effect of the "O" ring, it can prevent the sand and the like from entering the hinge pair of the chain.
Correctly adjust the motorcycle chain
1. Adjusting the tightness of the motorcycle chain at 15mm~20mm in a timely manner. Always check the buffer bearing and fill the grease on time. Because the bearing working environment is harsh, once the lubrication is lost, the damage may be great. Damage will cause the rear sprocket to tilt, and lightly wear the side of the chain of the sprocket wheel, which will easily cause the chain to fall off.
2. When adjusting the chain, in addition to adjusting the scale according to the frame chain adjustment, it is also applied to observe whether the front and rear chainrings and the chain are on the same line. If the frame or the rear fork is deformed after being damaged, if the chain is adjusted according to its scale, it will enter a misunderstanding. It is mistaken that the chain and the chain are on the same line. In fact, the linearity has been destroyed, so this inspection is very It is important (it is best to remove the chain case when adjusting), and if it finds the problem, it should be corrected immediately, so as to avoid the trouble and ensure that nothing is lost.
3, when replacing the chain of chainrings, we must pay attention to the replacement of good quality materials and fine craftsmanship (generally special repair station accessories are more formal), which can extend the service life. Don't buy cheap products, especially the products that are not qualified for the sprocket wheel. If you change the eccentricity, you will find that the chain is suddenly loose and loose, and the consequences are unpredictable. 
4. Frequently check the matching clearance between the rear fork rubber sleeve and the fork and the fork shaft. Because the position requires the lateral clearance of the rear fork and the frame to be rigorous, and the up and down movement is flexible, the only way to ensure the rear fork It can be integrated with the frame without affecting the shock absorption effect of rear shock absorption. The connection between the rear fork and the frame is realized by the fork shaft, and is equipped with a buffer rubber sleeve. Since the quality of the domestic buffer rubber sleeve is not very stable, it is particularly prone to looseness. Once the joint is loose, the rear wheel will shift under the restraint of the chain when the motorcycle starts or accelerates, and the displacement is determined by the degree of damage of the buffer sleeve. At the same time, the motorcycle will have obvious sensation of swaying during the acceleration and deceleration, which is one of the important reasons for the damage of the chain sprocket. It should be checked and paid more attention.
5. Regularly clean the chain and the toothed disc, add grease in time, add rain and snow weather and muddy roads, and strengthen the maintenance of the chain and the toothed disc. Only in this way can the service life of the chain be extended.
1. Welding Machines - A welding machine is an essential tool for any welding job. It is used to create a welding arc that melts the metal being joined, allowing it to fuse together.
2. Welding Electrodes - Welding electrodes are metal rods that are used to conduct electricity and create an arc. They are coated with a flux that helps to protect the weld from contamination and oxidation.
3. Welding Wire - Welding wire is used in the MIG welding process to feed the welding arc with a continuous supply of wire. It is available in different thicknesses and materials, such as stainless steel, aluminum, and mild steel.
4. Welding Helmets - Welding helmets are designed to protect the welder's eyes and face from the intense light and heat produced during welding. They come in different styles and designs, including auto-darkening helmets that automatically adjust to the brightness of the welding arc.
5. Welding Gloves - Welding gloves are used to protect the welder's hands from heat, sparks, and other hazards associated with welding. They are made from materials such as leather and Kevlar and come in different sizes and styles.
6. Welding Safety Glasses - Welding safety glasses are designed to protect the welder's eyes from the intense light and UV radiation produced during welding. They are available in different shades and styles.
7. Welding Filler Metals - Welding filler metals are used to add material to the weld joint to create a strong, durable bond. They come in different materials, such as stainless steel, aluminum, and bronze.
8. Welding Clamps - Welding clamps are used to hold the metal being welded in place during the welding process. They come in different sizes and styles, including C-clamps, locking pliers, and magnetic clamps.
9. Welding Flux - Welding flux is used to protect the weld from contamination and oxidation during the welding process. It is available in different types, including powder, paste, and liquid.
10. Welding Gas - Welding gas is used in the TIG and MIG welding processes to shield the welding arc from contamination and oxidation. It is available in different types, including argon, helium, and carbon dioxide.
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