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SB Type Oil Seals

  • Shaft Diameter (mm)
  • Bore Diameter (mm)
  • Height (mm)

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General products will arrive within 2~7 days.

Description

  • Outer casing: metal

  • Spring-loaded sealing lip

Advantages

  • Broad range of applications in every sector of industry;

  • Metal housing for especially firm and precise seating in the bore; (Note: limited static sealing on the outer casing for  low viscosity and gaseous media)

Application

  • Industrial gearboxes

  • Axles (when subject to moderate dirt)

  • Power tools

Rubber

Nitrile (NBR), Fluoro Elastomer (FKM)

Metal Case

Carbon steel: AISI 1008 - 1010, Stainless 30304

Spring

Carbon steel: AISI 1070 - 1090, Stainless 30304

Media

Mineral oils, synthetic oils*, greases

    * With synthetic oils (polyalkylene glycols/polyalphaolefins) it is to be noted that the maximum operating temperature of 80 °C must not be exceeded.

Temperature

－40℃～+100℃，short term up to +120℃

Speed

Permissible circumferential speed for oil seals made from materials NBR(70) and FKM(75) for the sealing of motor oil SAE 20. The max speed for seals with dust lip: V＝8 m/s.

The formula:

v [m ⁄s] = shaft-Ø D [mm] x RPM [1/min] x π / 60,000

v [ft ⁄s] = shaft-Ø D [in] x RPM [1/min] x π / 720

Pressure

Max 0.05MPa / 0.5bar


Shaft

ToleranceISO h11
RunoutIT8
RoughnessRa = 0.2 ~ 0.8 μm,
Rz = 1.0 ~ 5.0 μm,
Rmax ≤ 6.3 μm
Hardness45 ~ 60 HRC
FinishNo lead; preferably plunge ground.

Bore

ToleranceISO H8
Roughness (metal OD)Rz = 6.3 ~ 16 μm

Specifications for SB Type Oil Seals

Shaft Diameter (mm) Input
Bore Diameter (mm) Input
Height (mm) Input
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