DBH 5078Sil radial shaft seal — 15 x 30 x 7

DBH 5078Sil 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 5078Sil and any equivalents.

When a rotating shaft needs its lubricant kept in and contaminants kept out, a radial lip seal does the job. The DBH 5078Sil is built for a 15 mm shaft running inside a 30 mm housing with a 7.00 mm width, and its Lz design means a sealing lip backed by a spring, with no secondary dust lip. Pressed into the bore and riding on the shaft, it suits compact machinery where oil or grease has to stay put.

Reading the number helps when you reorder. The 5078Sil code identifies both the size and the construction type inside the DBH line, so the same figure points to the same seal geometry every time. The three measurements to match are the shaft diameter of 15 mm, the housing bore of 30 mm and the 7.00 mm height. Because the Lz version carries only the spring-loaded lip, it belongs in spots where particles are not thrown directly at the seal.

You will find this size on input and output shafts of gearboxes, centrifugal pumps, electric motors, compressors and other power transmission equipment. Machine tools, conveyors and process lines also use it wherever a 30 mm bore and a 15 mm shaft have to hold oil or grease. Being a small cross-section, it turns up often in compact units and in low and medium power mechanisms.

Fitting calls for a little care. Confirm the shaft hardness and surface finish are right, and look for burrs or marks that could score the lip. Put a film of lubricant on the lip, then seat the seal square to the shaft with the lip turned toward the fluid being retained. Where the bore is chamfered, follow that angle so the metal case does not distort on the way in. Speed, temperature and the lubricant in use all shape the final choice.

For a quote, send the 5078Sil code or the 15 x 30 x 7 mm dimensions along with the design. We can search other brands or look at variants in lip style and material. Before fitting a replacement, inspect the shaft and bore as well; wear or eccentricity there will work against the new seal.