DBH 8405 radial shaft seal — 56 x 75 x 8/12.5

DBH 8405 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 8405 and any equivalents.

The DBH 8405 is a radial shaft seal built to hold lubricant inside a housing and block dust, water and particles from reaching the shaft. The code 8405 maps to a 56 mm shaft, a 75 mm bore and an 8.00/12.50 mm height, in the A 103 design. It sits between a rotating shaft and a static housing in gearboxes, pumps, motors and other power transmission equipment.

Reading the reference is straightforward. The 8405 number carries the size: shaft (d) 56 mm, housing (D) 75 mm, height (h) 8.00/12.50 mm. The A 103 design describes a metal-bodied seal with a sealing lip, which is what keeps oil or grease in place on rotating assemblies. Because the height is given as a double value, the lip can sit in either of two positions, so you have some room to work with when space on the shaft is tight. This makes it a frequent replacement item on industrial machinery.

You will run into this seal on gearboxes and speed reducers, centrifugal pumps, electric motors, drive shafts and rollers. In each case it does two jobs at once: it shields bearings and gears from dust, water and debris, and it stops lubricant from leaking out. Plants in food processing, chemicals, cement and material handling rely on seals like this one, where a clean machine and steady operation matter.

Installation rewards a bit of care. The shaft and bore should be clean, free of burrs and free of marks. Coat the lip with the same oil or grease the equipment runs on before you press it in. Keep the seal square as it goes in, avoid striking the lip, and use a tube or shim that bears on the outer ring. When selecting a replacement, factor in shaft speed, operating temperature and the fluid being sealed. A worn shaft may call for a seal with an auxiliary lip.

If you need a cross to the 8405, the fastest route is to send the complete code, the manufacturer's designation, or the three dimensions. From that we can search our range of seals and radial shaft seals and point you to the closest option. We can also walk you through the A 103 design and its variants for your specific application and working environment.

MR supplies the DBH brand. For a quote on the 8405 seal, send the code over WhatsApp or email and our team will get back to you promptly. A photo or sample of the original seal works too if you want us to confirm the correct reference. We can suggest equivalents and help you choose the right seal to keep your equipment running.