DBH 5086 radial shaft seal — 20 x 40 x 7.9

DBH 5086 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 5086 and any equivalents.

The DBH 5086 is a radial shaft seal built to keep lubricant in and contaminants out of rotating equipment. It fits a 20 mm shaft, a 40 mm housing bore and a 7.90 mm axial space. Because the lip runs against the shaft, the seal wears over time and is normally swapped out on a planned maintenance schedule or as soon as a leak shows up. MR Industrial Accessories supplies this seal as part of its seals and oil seals range.

Part number 5086 belongs to the DBH line. The three dimensions you need to match are shaft (d) 20 mm, housing (D) 40 mm and height (h) 7.90 mm. The Lx designation means a single lip with a spring, which is the usual choice for rotating shafts. The lip rides on the shaft, while the outside diameter seats with a press fit in the bore. At 7.90 mm tall, the seal fits into assemblies where axial room is tight and still does its job.

You will find this seal in gearboxes, pumps, electric motors, transmission shafts and process equipment where oil or grease has to stay inside. It also works in areas with dust or splash, acting as a barrier. Industrial machinery, conveying equipment and continuously rotating transmission systems are common hosts. The compact envelope suits designs with limited radial and axial space.

When picking a seal, confirm shaft diameter, housing bore and the height you have to work with. The shaft surface should be ground and free of grooves or burrs. Lubricate the lip before installation and use a tool that will not cut it. How concentric the shaft and housing are, plus peripheral speed, affect how long the seal lasts. If the shaft is worn, a repair sleeve is an option to consider.

Need a different size or an equivalent? Send part number 5086 together with your shaft, housing and height dimensions. The number stamped on the old seal or a photo of it also helps. With that information we can search for an alternative in the same line. MR Industrial Accessories can advise you based on the application.

To get a quote on the DBH 5086 oil seal, message us on WhatsApp with the part number and quantity. If you are unsure about the size, attach a photo or the housing dimensions. Our technical team reviews each inquiry and comes back with the options.