DBH 8201 radial shaft seal — 51 x 61 x 5.5

DBH 8201 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 8201 and any equivalents.

A radial shaft seal from the DBH line, the 8201 keeps oil or grease where it belongs and keeps dust, water and particles out of rotating assemblies. Its three key measurements are a 51 mm shaft, a 61 mm bore and a 5.50 mm height, and the Lz designation tells you it is a single lip with a spring. MR Industrial Accessories supplies this seal and can help you confirm it fits your equipment.

Reading the code is straightforward. DBH identifies the seal family, 8201 is the size reference, and Lz describes the lip arrangement: one sealing lip backed by a spring. The three figures to match against your machine are shaft 51 mm, housing 61 mm and width 5.50 mm. The elastomer lip works together with an outer metal case, so the seal holds up in continuously lubricated service at moderate temperatures.

You will find seals like this in gearboxes, centrifugal pumps, electric motors, rollers and other power transmission equipment. Whatever the machine, the job is the same: hold the lubricant in and keep contaminants away from the bearings. Treat it as a wear part. Once you see weeping around the seal or hear unusual noise from that area, plan a replacement.

Good installation starts with the shaft and the bore. The bore should be clean and free of burrs, and the shaft needs the right hardness and surface finish. Press the seal in squarely, without hammering the lip out of shape, and coat the lip with the same oil or grease used in the sump before you slide it over the shaft. If the shaft is already worn, a version with an auxiliary lip is worth considering. Speed, temperature and the fluid being sealed all influence the final choice.

For an equivalent, give us the code 8201 or simply the three measurements from the seal you are replacing. With that information we can search other brands and lip configurations in the same radial shaft seal category, and tell you whether the space allows a wider seal or a different lip style. Send the part number by WhatsApp or email and our team will get back to you promptly with a quote and advice on selection.