Aluminum Idler Roller

The aluminum guide roller is also called the aluminum alloy guide roller. It is made of excellent aluminum alloy materials. It has various types of specifications through the mold, and has a reinforced rib structure and high strength. And the application of fine equipment and special tools interrupts the surface finishing, so that the surface is lubricated, the coaxiality reaches 0.02mm, the whole axis is processed within 2g by computer balance correction processing, the shaft end special process and joint export bearing, can be easily operated under high speed operation Running freely. According to the demand, its appearance can also be specially treated: sand blasting, netting and special hardening treatment, so that it has excellent scratch resistance and wear resistance.

The customizable aluminum guide roller has the advantages of high strength, low resistance, light weight, sensitive migration, wear and corrosion resistance, darkness and appearance on the outside, especially for printing, packaging, film, paper, medicine, plastic, electronic battery. Such as the fine machinery industry and various types of coil processing.

The structure of the aluminum roller can be roughly divided into:
1. Hollow aluminum roller: Internal bearing type structure, the bearing is assembled in the inner surface bearing hole.
2. Coupling aluminum roller: The joint between the roller body and the stainless steel shaft end is a one-piece structure.
3. Water-passing aluminum roller: Cooling or heating liquid enters and exits through both sides and recirculates in the roller body.

There are some things that should be paid attention to during the use of shaft-free aluminum alloy guide rollers.

       Before using the aluminum alloy guide roller air expansion shaft, we must first fully understand the structure, performance and characteristics of the air expansion shaft, and understand the type, specification, type and adaptation of the air expansion shaft. Be proficient in the laying, installation methods, and skills of the inflation shaft, and understand the precautions in the construction, such as the bending radius of the inflation shaft, the arrangement of the laying, how to enter and exit the distribution box, the cabinet, how to pay attention to eliminate the eddy current . Familiar with the accessories of the inflatable shaft, as well as the installation and use of each accessory. Understand the special tools required for the installation of the expansion shaft and be familiar with the method of use. Familiar with the construction drawings and site conditions, and develop detailed construction plans. During the laying process of the inflation shaft, or after laying and installing, it is strictly forbidden to drag or collide the live electric welding faucet wire on the inflation shaft, because the electric welding faucet will be connected with the copper sheath of the inflation shaft (equivalent The welding spark is generated on the grounding wire, so that the copper sheath is melted, which causes holes in the copper sheath of the inflation shaft, causing moisture in the air to be absorbed by the magnesium oxide insulation, and the insulation resistance of the inflation shaft is lowered. Sometimes the price of aluminum rolls cannot be found because of the failure of the hole. It is mistaken that the product of the air shaft manufacturer has problems. This must be taken seriously.

Aluminum alloy guide roller use precautions

     During the laying and installation process, the insulation of the air-expansion shaft should be measured and the problems should be dealt with in a timely manner. Before and after the air-filled shaft is laid and before and after the production of the terminal and the intermediate joint, the insulation resistance of the air-expansion shaft should be measured several times and compared before and after to ensure that the air-expansion shaft quality of each installation process is intact. At the same time, regardless of the interruption or suspension of the expansion shaft, or to be placed for a period of time before construction, the end of the expansion shaft must be timely in order to avoid the moisture of the magnesium oxide insulation. After the terminal head and the intermediate head of the air-expansion shaft are fabricated, an insulation test is performed immediately. After 24 hours, the test is repeated. If the inflation shaft head is not damp, the cover layer is not damaged. In the actual test, the megohmmeter is used. The pointer should point to “∝”, which indicates that the inflation shaft has good insulation properties. If the insulation resistance value is found to decrease in the second test, the fault point should be found. Generally speaking, the fault point of the aluminum alloy guide roller is at the terminal or the intermediate joint. When searching, the flame can be used in the lower part of the terminal. The two ends of the joint are heated, and the insulation resistance value of the inflation shaft is measured. After a few seconds of heating, the insulation resistance value drops sharply, indicating that there is a problem with the terminal or the middle head. At this time, it should be removed and redone until qualified. . If the insulation resistance does not change, check other terminals or intermediate heads on the line until the point of failure is found and repaired as described above. After the expansion shaft is laid, if there is no intermediate joint, the terminal can be directly used. If there is an intermediate joint, the intermediate joint should be made first, otherwise the trouble of checking the phase will be increased. The copper sheath of the inflatable shaft can be used for grounding and must be grounded.

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