DBH 5128 radial shaft seal — 48 x 72 x 7

DBH 5128 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 5128 and any equivalents.

The DBH 5128 is a radial lip seal sized for a 48 mm shaft, a 72 mm housing bore and a 7.00 mm height, built in the Lx design. It keeps lubricant where it belongs and keeps dust, water and particles out of rotating equipment, which makes it a routine replacement item in gearboxes, pumps and power transmission drives.

Reading the number is straightforward: 48 mm is the shaft it rides on, 72 mm is the bore it presses into, and 7.00 mm is the overall width. The Lx designation tells you which construction you are dealing with in the radial shaft seal family. The elastomer lip contacts the turning shaft while the outer case holds position in the housing, so the seal works as a wear part and gets replaced once leakage or contamination shows up.

You will find this size in gearboxes, centrifugal pumps, electric motors, conveyor rollers and transmission systems, wherever a shaft turns inside a lubricated housing. It also suits locations where dust or water is present and the bearing or oil chamber has to stay protected. Because the section is thin and compact, it fits standard housings that call for a 48 x 72 x 7 mm seal.

Before fitting a new seal, inspect the shaft for burrs or scoring and make sure the bore is clean and undistorted. Lubricate the lip, then drive the seal in with a tool that presses on the outer edge only, never on the lip itself. Shaft speed, operating temperature and the fluid being retained all affect the choice, so if the original seal carries a different design, confirm compatibility before ordering. Misalignment or a damaged shaft surface will cut seal life short.

To get a quote, send part number 5128 or the dimensions 48 x 72 x 7 mm through WhatsApp. We can check alternatives in the DBH line or in other brands we supply, and we verify the technical data sheet before quoting. If your original seal uses a different designation or the housing has special tolerances, tell us and we will help you sort it out.