Rolling bearing touch seal

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Rolling bearing touch seal

Source: China Bearing Network Time: 2014-03-14

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1. Radial seals commonly used radial touch seals include felt seals, oil seal seals, packing seals and seal ring seals. Because in such seals, the seals are directly in contact with the shaft or other cooperating members; thus; Inevitable conflicts and wear; and increase the temperature; so it is usually suitable for the sealing of bearings under medium and low speed conditions.
.1) The felt ring seal is suitable for working environment with temperature less than 100 °C. The felt ring equipment is impregnated with oil; it has excellent sealing effect; after short-term use; the felt ring is formed without sealing condition, because the conflict is severe Only for occasions where the peripheral speed is less than 4m/s.
.2) The packing seal sealing effect is outstanding; its strength is that it can be pressed by bolts; the sealing pressure is improved; and the wear can be compensated; but the conflicting force is large; it is suitable for low-speed reverse movement.
.3) Oil seal seal 1 Inward type Normal oil seal firstly avoids lubricant overflow; the agreed peripheral speed is determined by the sealing data; usually it can be used for the sliding speed of the touch surface is less than 10m/s (the journal is fine) or less than 15m/s (axis Neck polishing).
2 Double lip oil seal can avoid lubricant overflow and dust intrusion; the agreed peripheral speed is determined by the sealing data; the applicable speed is the same as the inward type normal oil seal.
3 The outward-oriented normal oil seal firstly avoids dust intrusion; the agreed peripheral speed is determined by the sealing data; the applicable speed is the same as the inward-oriented oil seal.
.4) The seal ring seals the seal ring like a piston ring; it is placed between the sleeve with the ring groove (converted with the shaft) and the bearing cap (stop member); each touch surface needs to be hardened and polished. When the sealing demand is not high, only one ring can be used; when the demand is high, 2 to 4 rings can be used, and the sealing ring is made of chrome-containing wear-resistant cast iron; it can be used for sliding speed less than 100m/s, and the sliding speed is 60-80m/ Within the s range; seal rings made of tin bronze can also be used.
2. End face seal end face touch seal is a kind of seal layout that has been developed very quickly in recent years. Commonly used end face seals are mainly metal washer face seals, floating oil seal sealing equipment and self-lubricating data end face seals.
.1) Metal gasket seal outer seal, inner seal and outer double seal seal are stamped with galvanized special strip; seal lip and seal touch surface straight.
.2) The floating oil seal is composed of three parts: floating seal seat, O-ring and floating ring; good anti-pollution function; strong adaptability to oscillation and turbulence; insensitive to dust; high pressure.
.3) Self-lubricating data Sealing seal data has self-lubricating function; low collision factor; suitable for working at higher sliding speed.
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