DBH 8440 radial shaft seal — 30 x 52 x 8/10

DBH 8440 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 8440 and any equivalents.

The DBH 8440 is a radial shaft seal built around a rotating shaft, keeping lubricant where it belongs and blocking dust and water from getting in. Its dimensions are shaft 30 mm, housing 52 mm, height 8.00/10.00 mm. MR Industrial Accessories LLC supplies this brand to maintenance and purchasing teams across the United States and Latin America.

Read the code and the numbers together and the seal tells you where it fits: d 30 mm for the shaft, D 52 mm for the bore, h 8.00/10.00 mm for the height. The A 135 designation covers a particular lip and case arrangement, which is what gives the seal its fit in the cavity. It works as a drop-in replacement where axial room is tight and a dependable barrier is needed.

You will find seals of this type in gearboxes, pumps, electric motors, transmission shafts and process equipment. They handle moderate speeds and low pressures, so oil or grease service suits them. In food, chemical and general manufacturing plants they shield bearings and help the assembly last longer. A 30 mm shaft paired with a 52 mm housing is the match to look for.

Installation is straightforward when the basics are respected. Clean the shaft and the housing, check for burrs, and coat the lip with the same oil or grease the equipment runs on before pressing it in. The 8.00/10.00 mm height leaves a little room in the housing depth. When choosing a replacement, weigh rotation speed, operating temperature and the fluid being retained, and use the A 135 design as a comparison point against other options.

Looking for an equivalent from a different brand? Send the full code, the dimensions or a photo of the original part. We can search for alternatives that keep the same shaft and housing diameter while the height or lip design changes. Our team helps you sort through the options and pick what fits.

To get a quote on the DBH 8440, message us on WhatsApp or by email with the code 8440 or the dimensions 30 x 52 x 8.00/10.00 mm. Ask about other sealing and oil seal products at the same time if you need them.