DBH 8722 radial shaft seal — 82.5 x 120 x 15

DBH 8722 belongs to radial shaft seal, part of our Seals range. Tell us how many you need by WhatsApp or email and we'll get back to you promptly with a quote for 8722 and any equivalents.

The DBH 8722 radial shaft seal is a lip seal that fits on a rotating shaft to keep lubricant in and contaminants out. With a shaft diameter of 82.50 mm, a housing diameter of 120.00 mm and a height of 15.00 mm, it is sized for medium and large equipment. The Mx-Bidi design seals in both directions of rotation, which helps in applications where the shaft may reverse or move back and forth.

This seal is identified by the code 8722 and by its standard dimensions: shaft 82.50 mm, housing 120.00 mm, height 15.00 mm. The Mx-Bidi lip configuration means the sealing action does not depend on which way the shaft turns. The elastomer resists mineral oils and greases, and a spring is normally included to keep the lip in contact with the shaft.

You will find seals of this size in gearboxes, centrifugal pumps, transmission shafts, rollers on road machinery and process equipment. In each case the job is the same: hold the oil inside the assembly and stop dust, water or particles from getting in and wearing out bearings and gears. They also serve as secondary closures on electric motors and machine tool spindles, where chips or coolant can ruin lubrication.

For a proper installation, confirm that the shaft diameter is within the recommended tolerance and that the contact surface is free of burrs or deep marks. Coat the lip with the same oil or grease used in the equipment before pressing it in, and use a support tube that pushes on the outer ring, never on the lip. If the housing is worn or rough, the seal will not perform correctly, so check the seat dimension and condition before fitting the replacement.

If you need an equivalent, send the complete code from the old seal or the shaft, housing and height dimensions. With that information we can search for an alternative within the DBH line or other brands we supply. We can also tell you if the Mx-Bidi design is not right for your equipment and a single-lip or dust-guard version would be better.

MR Industrial Accessories supplies the DBH brand as part of its seals and oil seals range. To request a quote for the 8722 seal, send the code by WhatsApp or email and our team will reply promptly with the technical information for your inquiry.