Radial shaft seal DBH 8640 — 41.00 x 56.00 x 7.00

DBH 8640 is a radial shaft seal reference, within Seals. Request a quote for 8640 via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.

The DBH 8640 radial shaft seal is a lip seal for rotating shafts that prevents oil or grease leakage and blocks the entry of dust and water at the point where the shaft passes through the housing. Thanks to its dimensions of 41 mm shaft, 56 mm housing and 7 mm height, and its Mz design, it is used in gearboxes, pumps, electric motors and power transmission equipment operating at moderate speeds. MR Accesorios Industriales sells this official brand and advises you on choosing the right seal.

This item is a DBH 8640 radial shaft seal, identified by code 8640. Its dimensions are 41 mm shaft diameter (d), 56 mm housing diameter (D) and 7.00 mm height (h). The Mz design corresponds to a single-lipped seal with a spring, designed to retain lubricant in one direction and keep it inside the assembly. The designation 8640 is the reference you will find on the manufacturer's product page and the one you should quote when ordering a replacement or an equivalent.

Typical applications for a seal of these dimensions include gearboxes, centrifugal pumps, electric motors, rollers and power transmission equipment. In all these cases the seal performs the same function: sealing the shaft passage without slowing its rotation. It is also used as a barrier against contaminants in dusty or humid environments, provided the shaft and housing are in good condition and the operating speed is compatible with the lip design.

For installation, check that the shaft has no burrs, splines or wear in the contact area, and that the housing is clean and free of impacts. Lubricate the lip with the same oil or grease used in the equipment before inserting it, and do so with a tube or press that bears on the outer diameter, never on the lip. If the shaft shows a deep groove, consider a seal with an offset lip or a wear sleeve. Selection depends on the fluid, temperature and speed; with that data we define the right variant.

If you need an equivalent or a nearby size, send us code 8640 along with the shaft, housing and height dimensions, and the type of lubricant used in the equipment. With that we review alternatives within the DBH line or other brands we sell, and confirm whether a compatible option is available. We can also search by dimensions if the original code is not available or if the manufacturer changed the designation.

To request a quote for the DBH 8640 seal or ask about a similar size, write to us on WhatsApp and send us code 8640. At MR Accesorios Industriales we handle technical inquiries on seals and oil seals, and we help you identify the right part according to dimensions and use. If you have doubts about installation or the condition of the shaft, tell us about your case and we will look at it together before deciding on the purchase.