Radial shaft seal DBH 8722 — 82.50 x 120.00 x 15.00

DBH 8722 is a radial shaft seal reference, within Seals. Request a quote for 8722 via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.

The DBH 8722 radial shaft seal is a lip seal that mounts on a rotating shaft to retain lubricant and block the entry of dust, water or particles. Its dimensions of 82.50 mm shaft diameter, 120.00 mm housing diameter and 15.00 mm height place it in medium and large equipment. The Mx-Bidi design allows sealing in both directions of rotation, which is useful in applications with reciprocating motion or with a risk of reversal of rotation.

This item is a DBH 8722 radial shaft seal, identified by its designation 8722 and by the standard dimensions listed on its product page: shaft diameter 82.50 mm, housing diameter 120.00 mm and height 15.00 mm. The Mx-Bidi design indicates that the lip seals in both directions of rotation, so it does not depend on the direction of rotation to maintain sealing. It is made of elastomer resistant to mineral oils and greases, and it usually incorporates a spring that ensures contact of the lip on the shaft.

Typical applications of a seal of these dimensions appear in gearboxes, centrifugal pumps, transmission shafts, rollers of road machinery and process equipment. In all cases it performs the same function: retain the oil inside the assembly and prevent the entry of contaminants that accelerate the wear of bearings and gears. It is also used as a secondary closure in electric motors and in machine tool spindles, where the entry of chips or coolant ruins lubrication.

To install it correctly, check that the shaft diameter is within the recommended tolerance and that the contact surface has no burrs or deep marks. Lubricate the lip with the same grease or oil as the equipment before inserting it, and place the seal with a support tube that pushes on the outer ring, never on the lip. If the housing shows play or roughness, the seal will not perform: it is advisable to check the dimension and the condition of the seat before installing the replacement.

If you need an equivalent or a nearby size, send us the complete code that appears on the old seal or the shaft, housing and height dimensions. With that data we can look for an alternative within the DBH line or other brands we carry. We can also advise you if the Mx-Bidi design is not suitable for your equipment and a single-lip or dust-guard version is needed.

MR Accesorios Industriales carries the DBH brand as part of its line of seals and oil seals. If you want a quote for the 8722 seal or to ask about a nearby size, send the code by WhatsApp and we will reply with the technical information for your inquiry.