DBH 5146 radial shaft seal — 55 x 72 x 10

DBH 5146 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 5146 and any equivalents.

When a gearbox, pump or motor starts weeping lubricant, the DBH 5146 radial shaft seal is one of the sizes worth checking first. It measures 55 mm at the shaft, 72 mm at the housing bore and 10 mm in height, and it uses the Lx configuration: a sealing lip carried in a metal outer body that presses into the housing. That combination keeps oil or grease on the lubricated side while keeping dust and water out.

The code breaks down simply. DBH is the brand, 5146 is the item reference, and the three figures in the designation follow the usual order for this family of seals: shaft first, housing bore second, height third. Reading it that way lets a maintenance planner match the number on a parts list against the bore and shaft in front of them without digging through a catalog.

Typical locations are gearboxes, centrifugal pumps, electric motors, rollers and other transmission equipment where the lubricant has to stay put and the bearings have to stay protected. The same seal can serve in areas with moderate dust or water exposure, as long as the operating speed and temperature stay within what the lip compound can handle. Treat it as a wear item and inspect it during every scheduled shutdown rather than waiting for a visible leak.

Installation decides how long the replacement lasts. Wipe the housing bore and confirm it is round and free of damage, then look at the shaft for burrs, scoring or a worn groove where the old lip ran. Coat the lip with the lubricant it will see in service, seat the seal square, and drive it in on the metal outer ring, never on the lip itself. If the shaft already shows a groove, an offset-lip seal is the usual answer. Speed, temperature and the fluid being retained are the three factors that drive the final selection.

To get a quote, send the dimensions — shaft, housing and height — or the code 5146. A photo of the old part or the original manufacturer's reference works just as well. From there the team checks options within the same series and across the other seal lines we supply, and confirms the match before quoting.