Radial shaft seal DBH 8771 — 72.00 x 84.00 x 18.00/20.50

DBH 8771 is a radial shaft seal reference, within Seals. Request a quote for 8771 via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.

The DBH 8771 radial shaft seal is a lip seal designed to stop lubricant from escaping and keep contaminants out of rotating equipment. It mounts on a 72 mm shaft and fits into an 84 mm bore, with a height of 18.00/20.50 mm and an A 103-Bidi design. It is a key part in gearboxes, pumps and motors, where sealing extends the service life of bearings and gears.

This item is a DBH brand radial shaft seal, identified by part number 8771. Its dimensions are 72 mm shaft, 84 mm housing and 18.00/20.50 mm height. The A 103-Bidi design indicates a double-lip configuration, intended to retain lubricant and repel dirt from both sides. The sealing lip runs against the rotating shaft, while the outer diameter maintains the fit in the housing. It is a common replacement part in industrial maintenance.

It is used in equipment with continuous rotation where oil or grease must be contained: gearboxes, centrifugal pumps, electric motors, reducers and conveyor rollers. It also appears in agricultural machinery and process lines. Its function is to prevent leaks that dirty the surroundings and, at the same time, keep dust or water from entering the bearing. In environments with vibration or moderate temperature, a well-selected seal reduces downtime for corrective maintenance.

To install it, check that the shaft has no burrs or wear and that the housing is clean and free of dents. Lubricate the lip with the same grease or oil used in the equipment before inserting it, and seat the seal with a press or a tube of the appropriate diameter, never striking the lip. The 18.00/20.50 mm height allows some axial tolerance depending on the housing design. If the shaft shows a worn track, consider a repair sleeve or a nearby size.

If you need an equivalent or a close size, the most practical approach is to send us part number 8771 or the current dimensions: shaft diameter, housing diameter and height. With that data we can search the DBH line or other alternatives that perform the same function. We can also advise you if the A 103-Bidi design does not suit your application and a different lip type or material is a better fit. The goal is to keep your equipment from sitting idle over a sealing part.

To request a quote for the DBH 8771 seal, send the part number by WhatsApp to MR Accesorios Industriales. With more than 80 years in the business, we help you identify the correct part and answer installation questions. If you have a list of seals for maintenance, send us the part numbers and dimensions and we will prepare the full inquiry for you.