DBH 5784 radial shaft seal — 30.1 x 61.9 x 11.9

DBH 5784 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 5784 and any equivalents.

Part number 5784 belongs to the DBH line of radial shaft seals, a lip seal built to hold lubricant in and keep contaminants out of rotating shaft assemblies. Its Mz construction pairs a sealing lip with a metal reinforcement, and the size designation reads as shaft 30.10 mm, housing 61.90 mm, height 11.90 mm. MR Industrial Accessories supplies this brand within its seals range and can help you confirm the right choice.

Reading the size code is the first step in any replacement. The three figures on a DBH seal follow a fixed order: d for the shaft, D for the bore it presses into, and h for the height. On the 5784 those values are 30.10 mm, 61.90 mm and 11.90 mm respectively. The Mz suffix describes how the lip and the metal body are put together within the DBH family, so two seals with identical dimensions but different suffixes are not interchangeable.

Typical service locations include gearboxes, pumps, electric motors, line shafts and other rotating equipment found in plants. The seal does two jobs at once: it keeps oil or grease where it belongs and blocks dust, water and particles from reaching the bearing cavity. Because the lip rides continuously on the shaft, even contact pressure across the circumference is what keeps leakage and lip wear under control over time. Replacement of worn seals and assembly of new machines are the two situations where these parts are ordered most often.

Installation quality decides how long the seal lasts. Both the shaft and the housing bore should be clean, with no burrs, nicks or scratches, and the measured dimensions should match the seal before anything is pressed in. Depending on rotation direction or working pressure, the Mz lip may need a particular orientation, so check this before assembly. Apply lubricant to the lip, then drive the seal in with a tool that contacts the outer diameter only, never the lip itself. A grooved or worn shaft can be brought back with a repair sleeve.

When you need a cross-reference for the DBH 5784, send the part number together with the three dimensions and a photo of the seal you are replacing. That is usually enough for us to search the lines we carry or point you to a standard size that will work. Tell us as well which lubricant is used and what the operating conditions are, and we can advise on the lip design that suits them.

Quotes are handled by part number through WhatsApp or email. Send 5784, or the dimensions if the number is no longer readable, and the team will come back to you promptly with options that fit your equipment.