Talking about imported bearing sealing equipment

Source: China Bearing Network Time: 2017-12-05

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Sealing is to adhere to the outstanding smooth condition inside the imported bearing; and hinder the service life of the cooling water, iron oxide scale and impurities immersed in the extended bearing of the operation. Because of the bearing seal problem of the rolling mill; the most damage to the bearing is the part close to the side of the roller; the bearing often It is because the smooth grease is polluted and lost; the surface of the parts is worn, detached or even broken; especially the emulsion of the cold strip mill enters; the smooth grease fails faster.
The seals of imported bearings are divided into self-contained seals and external seals. The outer seals are mainly drawn with a combination of labyrinth and touch. The more stages of the labyrinth (not lower than the north and south poles), the smaller the gap, the better the seal. The gap of the labyrinth is taken from the radial side of the bearing scale to a single side of 0. 6 ~ 1. 5mm, the axial direction of 4 ~ 6mm.
Touch-type skeleton oil seal: it is widely used in rolling mills; it can be used side by side in order to add effect. Oil seal is directional; can not be reversed. Hot rolling mill usually has two oil seals; two oil seal lips must be bearing Outside the seat; to prevent the external dirt from immersing. The cold strip mill usually has three oil seals close to the bearing, one oil seal lip should be inward; to prevent the smooth grease overflow affecting the quality of the rolled material. Be careful when using the oil seal; Crash the lip; affect the sealing effect.
RBR type sealing ring: This is a kind of rubber lip sealing ring for rolling mill bearings; it has been widely used in these years. The RBR sealing ring adopts the method of axial sealing; its lip is attached to the base surface of the gland; The effect of the beating; the old grease inside the bearing can overflow; the external cooling water, iron oxide scale, impurities are obstructed by the lip; it has a good sealing effect and is easy to use; when the roller is changed, the roller is not affected by the bearing seat. .

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Bearing related knowledge

US FAFNIR company bearing make up code (a)
The oscillation of the bearing and the temperature of the bearing are common. The abnormality of the bearing and its cause are judged according to the selection and application of the industrial bearing according to the "continuous use of the imported bearing after correction".

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