BEARING ITALIA S.P.A

Radial shaft seals for heavy industrial applications

Radial shaft seals, also known as lip seals, are used to seal rotary elements, such as a shaft or rotating bore. Common examples include strut seals, hydraulic pump seals, axle seals, power steering seals, and valve stem seals. Early radial shaft seals utilized rawhide as the sealing element, and many elastomeric seal companies today once were tanneries. The advent of modern elastomers replaced rawhide, industry also added a garter spring which helps the sealing lip compensate for lip wear and elastomer material changes.

The seal construction will consist of a sprung main sealing lip which has a point contact with the shaft. The point contact is formed by two angles, with the air side angle usually less than the oil side angle. Depending on the seal type these two angles are varied to create a pressure distribution at the seal contact point which has a steeper slope on the oil side of the seal. The shallower the slope on the oil side of the seal the wetter the seal will run. The spring is positioned such that axially the centerline of the spring is biased to the air side of the lip contact point.

In order to exclude contaminants numerous types of dust lips or exclusionary lips may be used. Common elastomers include FKM, ACM, NBR, HNBR, and AEM. In order to resist wear, the compounds' durometer (hardness) is typically 70 to 85 Shore A (between that of an automobile tire and a soft inline-skate wheel).

skf 460x510x22 HDS2 V Radial shaft seals for heavy industrial applications
Max 220°
Two-Bolt Flange
skf 1169110 Radial shaft seals for heavy industrial applications
Two Metal Shields
22.1
skf 594760 Radial shaft seals for heavy industrial applications
Open Type
Standard
skf 275x310x16 HDS1 R Radial shaft seals for heavy industrial applications
85 mm
9800 kgf
skf 340x372x16 HDS2 V Radial shaft seals for heavy industrial applications
Self Lubricating
.4370 in
skf 93751 Radial shaft seals for heavy industrial applications
Solid Pillow Block
Max 250°
skf 2050557 Radial shaft seals for heavy industrial applications
Round
Lubrication Fitting
skf 92543 Radial shaft seals for heavy industrial applications
1200 (sfm)
50000
skf 430x480x16 HDS2 R Radial shaft seals for heavy industrial applications
Normal Duty
Lubrication Fitting
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