NTN-SNR BEARING RULMENTI S.R.L.

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 1850554 Radial shaft seals for heavy industrial applications
N/A
4.921 Inch | 125 Mil
skf 2650241 Radial shaft seals for heavy industrial applications
0813930022758
Needle Bearing
skf 778x818x20.5 HS5 D Radial shaft seals for heavy industrial applications
Mounted Units &
BEARINGS LIMITED
skf 440x470x20 HDS1 R Radial shaft seals for heavy industrial applications
Duplex-Universal
2050 kgf
◂ Previous page
All Products Contact Now
Product Categories
Deep groove ball bearings
Double row spherical roller bearings
Plain bearings,Bushings
Radial shaft seals for general industrial applications
Radial shaft seals for heavy industrial applications
Radial spherical plain bearings
SAF and SAW pillow blocks with bearings on an adapter sleeve
Single row angular contact ball bearings
Single row cylindrical roller bearings
Single row deep groove ball bearings
Single row or matched pairs of angular contact ball bearings
Single row tapered roller bearings
SKF Speedi-Sleeve
SNW/SNP-Pull-Type Sleeve, Locknut, Lockwasher/Lockplate Assemblies
Solid Block/Spherical Roller Bearing Housed Units-Double Concentric Four-Bolt Pillow Block
Timken Hm518445 Bearing
3984 Timken Bearing
Timken 13889 Replacement Bearing
Lm12748f Bearing