DBH 8730 radial shaft seal — 25.5 x 58.7 x 7

DBH 8730 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 8730 and any equivalents.

The DBH 8730 is a radial shaft seal that keeps lubricant inside a housing and keeps dust, water and other contaminants out. Its code covers a 25.5 mm shaft, a 58.7 mm housing bore and a 7 mm height, with design A 146. The outer diameter presses into the housing while the lip rides on the turning shaft, which makes it a service item on pumps, motors, gearboxes and other rotating equipment.

Reading the code is the quickest way to confirm a match. The 8730 identifies the DBH item, and the three figures that follow in the designation describe the fit: shaft 25.5 mm, housing 58.7 mm, width 7.00 mm. Design A 146 tells you which construction the manufacturer uses for this seal. Because the lip is normally an elastomer and the case is metal, the part works as a press-in replacement in a machined bore.

You will find seals of this type on centrifugal pumps, electric motors, gear reducers and gearboxes, compressors, and power transmission drives. On each of them the job is the same: hold the oil or grease in and keep grit and moisture away from bearings and gears. Fan shafts, mixer shafts and conveyor shafts also rely on this kind of sealing, since a failed lip can take a line down without warning.

Before ordering, check the three dimensions against the shaft and bore you are working on. Design A 146 can be built with different lip profiles and elastomer compounds, so the operating conditions matter: surface speed, temperature and the fluid being sealed. For installation, coat the lip with the lubricant already used in the unit, seat the seal square to the shaft, and press it in with a flat driver rather than a hammer. If the shaft shows a groove or wear, repair it or move to a seal with an auxiliary lip.

Need a replacement for the DBH 8730 or a cross to another brand? Send the full code, the dimensions or a photo of the original part through WhatsApp or email. Our team reviews what you send, checks the alternatives we carry, and can advise on lip material and spring type based on the fluid and the temperature in your application.