Application of seal on oil film bearing of rolling mill
Oil film bearing is also called liquid friction bearing. In the process of rolling the mill, liquid lubrication is used to form a complete pressure oil film between the cone sleeve and bushing. The oil film completely separates the casing from the cone sleeve and runs at relatively high speed with no direct metal contact.
A sealing device is an important part of oil film bearing.
There are three main characteristics of the oil film bearing rotary seal:
1) two-way medium (water or emulsion, lubricating oil) seal
2) Pressure difference on both sides, but jet or splash
3) The seal rotates with the roller at high speed
The rotary seal of the oil film bearing in the rolling mill is lip seal. Lip seal mainly depends on the tip of the sealing lip to compress the sealing coupling surface. Theoretically, it should be line contact, but in fact, it is narrow-band contact, with enough compression force, contact stress is peak.
The lip seal should not be pressed too tightly and the contact band should not be too wide. Analysis from the dual Angle of lubrication and sealing, that is: if the pressure is too large, the surface of the seal and coupling will be in a semi-dry friction state, aggravating the wear and heating of the seal, shortening the service life.
If the contact zone is too wide, thicker wax lubrication may develop, which can leak outwardly and reduce the sealing effect.
FV Bearing can not only produce standard models to replace well-known international brands, but also make design improvements according to the specific requirements of customers. If you have any requirements for rolling mill bearings, please contact FV, send an email email@example.com. Describe your needs and we’ll reply within 48 hrs.
The price of rockwell hardness
The price of rockwell hardness continues to be affected by factors such as market growth momentum, various opportunities and challenges. However, during the forecast period from 2020 to 2025, the global rockwell hardness sales market is expected to continue to be over the average of the last five years. The growth rate will continue to increase rapidly. It is expected that from today to the first month of next year, the price of rockwell hardness will increase to a certain extent.
Due to changes in consumer demand, import and export conditions, and various investigations on the development of rockwell hardness, the cost of rockwell hardness is constantly changing. Taking into account the current market macroeconomic parameters, value chain analysis, channel partners, demand and supply, the cost of rockwell hardness will also be affected to a certain extent. It is estimated that the cost of rockwell hardness will increase slightly from today to the first month of next year. FV Bearing is a leading supplier of precision bearings and bearings-related products across a large spectrum of customers – primarily OEMs and major distributors.
The market trend of rockwell hardness?
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The market demand for rockwell hardness?
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The high-quality rockwell hardness supplier
FUWEI(LUOYANG) METALLURGY BEARING with the trade mark ( FV ) is a professional manufacturer of heavy industry bearings and have official locations in Luoyang and Dalian. FV Bearing is a leading supplier of precision bearings and bearings-related products across a large spectrum of customers – primarily OEMs and major distributors. We are good at combining customers\' actual applications and designing with the advantages of well-known brand bearings, in order to providing high-quality solutions to customers.
We strictly control bearing quality from the raw material selection, design, processing, and quality inspection, and we are committed to providing customers with the highest quality products and services.
Get the latest bearings price list from FV bearings, you can send an email to firstname.lastname@example.org. Describe your needs and we’ll reply within 48 hrs.
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