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Material selection and technical requirements of roller shell
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Usually a casing made of seamless steel roller, in order to save the cost of materials, reduce the cost, but also can be used to do but the weld seam steel tube shell, the demand is higher, so as not to scratch tape. There are also used PVC pipe, glass fiber reinforced plastic, rubber, ceramic tube shell, the latter is the advantage of corrosion resistance, no rust, small density, in addition to the carrying capacity of FRP than the steel pipe.
Selection and technical requirements of bearing seat
There are two kinds of bearing pedestal and bearing seat. The punching bearing seat is superior to cast iron bearing seat. Therefore, the cast iron bearing seat has gradually been eliminated. Of course, there are some special roller must also use cast iron bearing seat.
Selection and lubrication of bearings
Bearing is an important part of the roller, the selection is appropriate, the quality of the pros and cons, related to the service life of roller. In the operation of the belt conveyor, the roller speed is high, the main bearing of the external diameter force, but at the same time bear a certain axial force. According to the above characteristics and the cost of roller, the actual production of deep groove ball bearings.
1, roller normal service life of more than 20000h, generally do not need maintenance. However, according to the use of the place and the size of the load, the corresponding maintenance date should be developed, timely cleaning oil maintenance, timely liquidation of floating coal, etc.. To have abnormal sound and not to the roller to replace.
2, the replacement of bearings, the bearings must be open to the outside, the bearing into the roller, should maintain proper clearance, shall not be crushed to death.
3, labyrinth seals should use the original parts, assembly should be installed in the roller, shall not be assembled together.
4, the use of roller, should be taken to prevent the weight hit the roller tube body.
5, in order to ensure the roller sealing performance and use performance, free to remove the idler.
Roller is an important part of transport aircraft, the number of large, large pressure, pressure time is long, the need for regular maintenance, in order to reduce unnecessary losses, extend the supporting roller and its service life.
On roller maintenance should pay attention to the following points:
1, in the peacetime use of roller, should minimize the impact of the roller, and do not disassemble and assemble it.
2, the use of labyrinth seals, should be used to specify the original accessories, and classified according to the requirements of the load, can not be used to avoid confusion, different parts of the assembly can not work properly together.
3, in the bearing replacement, to the bearing of the cage open outwards, and in the bearing into the roller after leaving a certain gap, can not be crushed to death.
4, in the rest, you can take off the roller, avoid prolonged pressure and deformation, affecting the use of results.
5, after the end of the work, with special cleaning agent to clean the roller, and the roller after washing in a cool ventilated place, air dry to continue to use.
6, can be used to protect a class of articles on the need for temporary storage of the roller wrapped to prevent fouling.
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