DBH 8186 radial shaft seal — 45 x 65 x 9

DBH 8186 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 8186 and any equivalents.

A radial shaft seal from the DBH line, the DBH 8186 keeps lubricant where it belongs and keeps contaminants out of rotating equipment. Its size is written as 45 x 65 x 9 mm, which means a 45 mm shaft, a 65 mm housing bore and a 9.00 mm height. You will find this seal in gearboxes, pumps, electric motors and power transmission assemblies. MR Industrial Accessories supplies this brand and can help you match the right seal to your application.

The code breaks down simply. The 8186 identifies the size within the DBH range, while the Mx-Hel suffix tells you how the lip and spring are put together. Shaft 45 mm, housing 65 mm, width 9.00 mm. Inside the seal, the lip, the spring and the outer body work together to hold oil or grease in and block dust, water and other particles from getting in. Treat it as a wear part: once you see lubricant weeping past it or dirt collecting around the shaft, plan a replacement.

You will typically find the DBH 8186 on a turning shaft that runs inside a fixed housing, with the seal separating the lubricated side from the outside. Gearboxes, centrifugal pumps, electric motors, rollers and general power transmission equipment are common homes for it. It also shows up in machine tools, process equipment and conveyors, where keeping oil in place protects bearings and gears. On equipment that sees heavy vibration or high temperatures, inspect both the shaft and the housing before you install a new seal.

Installation starts with confirming the bore and shaft: 45 mm shaft, 65 mm housing, 9.00 mm height. Run a finger along the lip contact area and look for burrs, deep scratches or a worn groove; any of these will shorten seal life. Coat the lip with the same oil or grease the equipment uses, then press the seal in squarely, keeping it perpendicular to the shaft and avoiding any hammer blow to the lip. If the housing itself is damaged, a sleeve or a different size may be the better route.

Need a cross-reference? Send the code 8186 or the dimensions 45 x 65 x 9 mm on WhatsApp or by email. We can search other brands and series with the same section, always checking against the manufacturer's data. If your shaft or housing shows wear, we can also advise whether a different lip or material configuration makes more sense. MR Industrial Accessories handles seals, bearings and power transmission parts, and our team replies promptly to quote requests.