Radial shaft seal DBH 8121Pol — 50.80 x 69.85 x 9.50

DBH 8121Pol is a radial shaft seal reference, within Seals. Request a quote for 8121Pol via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.

The DBH 8121Pol radial shaft seal is a lip seal that mounts in the housing and seals against the rotating shaft to retain lubricant and block the entry of dust, water or particles. Its dimensions of 50.80 mm shaft, 69.85 mm housing and 9.50 mm height correspond to the Lz-R design, with a retaining lip and dust lip. It is used in gearboxes, pumps, electric motors and power transmission equipment where bearings and gears must be protected.

This item is a radial shaft seal from the DBH line, identified with part number 8121Pol. Its dimensions are 50.80 mm shaft diameter (d), 69.85 mm housing diameter (D) and 9.50 mm height (h). The Lz-R design combines a main sealing lip with an outer dust lip, intended for environments with dust or splashes. The elastomer runs on the shaft and the metal case stays fixed in the housing, with no need for auxiliary seals.

Typical applications for a seal of this size appear in gearboxes, speed reducers, centrifugal pumps, electric motors and power transmission equipment. It is also found in road and agricultural machinery and in process lines where shafts rotate inside an oil-filled crankcase. In all these cases it performs the same function: preventing lubricant leaks to the outside and stopping the entry of contaminants that shorten bearing life.

To install it, check that the shaft has no burrs or wear and that the housing is clean and free of deformation. Lubricate the lip with the same grease or oil used in the equipment before inserting it, and do so with a flat driver that presses on the outer diameter, never on the lip. If the shaft shows a deep groove, consider a nearby size or a seal with the lip in a different position. Selection depends on speed, temperature and the type of fluid, data that should be confirmed before requesting a quote.

If you need an equivalent or a nearby size, send us part number 8121Pol, the shaft and housing diameters, and a photo of the old seal if you have it on hand. With that data we review alternatives within the same series or from other brands MR carries, and we send you the option that best fits. We can also check the Lz-R design against other single- or double-lip variants depending on the type of contamination in the equipment.

MR Accesorios Industriales carries the DBH brand as an official brand within its line of seals and oil seals. If you already have part number 8121Pol or its equivalent, write to us on WhatsApp and we will quote it. With more than 80 years in the industry, at MR Accesorios Industriales we work with technical inquiries so you get the correct seal and not a similar one.