DBH 8489/85 radial shaft seal — 45 x 62 x 8

DBH 8489/85 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 8489/85 and any equivalents.

Part number 8489/85 from DBH is a radial shaft seal built around a single sealing lip and an outer metal case, identified in the catalog as design Lt. It sits in the bore of the housing while the lip rides against the rotating shaft, keeping lubricant inside and contamination outside. The size is 45 mm at the shaft, 62 mm at the housing and 8.00 mm in height, a footprint found on many gearboxes, pumps and motors. MR Industrial Accessories supplies it through its seals and oil seals line.

Reading the number is straightforward once you have the three measurements. Use the shaft diameter as the first figure, the housing bore as the second and the height as the third: shaft 45 mm, housing 62 mm, width 8.00 mm. The design code Lt tells you the seal has one lip and a metal outer case that presses into the bore. Nothing here is made to order; it is a catalog item you can match against what is already installed.

Typical service is on equipment where a turning shaft has to be separated from its surroundings. Gearboxes, centrifugal pumps, electric motors, conveyor rollers, mixers and machine tools all fall into that group. The seal also keeps dust and moisture away from bearings in the same assembly, which is often the reason it is replaced during a rebuild. Lubricant type, shaft speed and operating temperature are the factors that decide whether a given seal suits the job.

Installation rewards preparation. The shaft surface should be polished and free of burrs or lathe marks, and the housing bore clean and undented. Lubricate the lip before it goes in, and press on the outer diameter with a proper driver rather than on the lip itself. Where the shaft shows a worn band at the sealing surface, a repair sleeve is worth considering. The 8.00 mm height also helps in shallow cavities that will not accept a wider seal.

If you are chasing an equivalent, send the number 8489/85 along with your shaft, housing and height measurements and the lubricant used in the equipment. From there we can check alternatives in the DBH line or in other brands we carry. Tell us as well if the seal sits next to a bearing or a bushing, so we can look at the whole assembly rather than the seal alone.

DBH is one of the brands in our seals and oil seals range. If the designation, size or design is unclear, message us on WhatsApp with 8489/85 and we will confirm whether it fits your equipment. Questions about other sizes in the same family are welcome too.