DBH 8263 radial shaft seal — 49 x 76 x 17.4

DBH 8263 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 8263 and any equivalents.

A rotating shaft needs a reliable barrier between the lubricant inside the housing and the surrounding environment. The DBH 8263 radial shaft seal does exactly that: it keeps oil or grease where it belongs and blocks dust and moisture from getting in. You will find this size in gearboxes, pumps, motors and other industrial machines, and it belongs to the A 111 design family. Its three key measurements are 49 mm at the shaft, 76 mm at the housing and 17.40 mm in height.

Reading the code helps when you are cross-referencing a worn seal. The number 8263 pins down one specific size in the DBH line, while A 111 tells you what kind of seal you are holding: a single-lip element, normally built with an elastomer body and a stainless steel spring. That combination works well on rotating shafts where you need a consistent barrier against lubricant loss and against particles or moisture coming in from outside.

Where does this seal usually show up? Gearboxes, centrifugal pumps, electric motors, compressors, machine tools and power transmission equipment are common hosts. In every case the shaft turns inside a stationary housing, and picking the right seal comes down to speed, operating temperature and the lubricant in use. Replacement work on older machines is another frequent scenario, since a tired seal often has to be matched by its dimensions rather than by a current catalog listing.

Installation rewards a bit of care. Clean the shaft and the housing bore, and check both for burrs or scratches before anything goes in. Put a light coat of the machine's own oil or grease on the lip, then press the seal in squarely. Drive it with a tube or spacer that contacts the outer ring, never by hammering on the lip itself. Set it deep enough that the lip rides on an unworn section of shaft; if a groove has already formed, a repair sleeve or a different size may be the better route.

If you are hunting for an equivalent, the fastest path is to send the code 8263 or the three measurements you have: shaft diameter, housing diameter and height. From there we can check our DBH seals and oil seals range and propose compatible options, or point you toward the design that suits your application. Dimensions have to line up closely, otherwise you risk leaks or excess heat at the lip.