Radial shaft seal DBH 5519 — 31.75 x 52.37 x 12.70

DBH 5519 is a radial shaft seal reference, within Seals. Request a quote for 5519 via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.

The DBH 5519 oil seal is a single-lip radial seal designed to retain lubricant and block the entry of dust or water on rotating shafts. Due to its Mz design and its dimensions of 31.75 mm shaft, 52.37 mm housing bore and 12.70 mm height, it is used in gearboxes, pumps, electric motors and transmission equipment. At MR Accesorios Industriales we supply it as part of our line of seals and oil seals for industrial replacement and maintenance.

The DBH 5519 is a radial shaft seal with designation 5519 and Mz design. Its nominal dimensions are 31.75 mm shaft diameter (d), 52.37 mm housing bore diameter (D) and 12.70 mm height (h). The sealing lip works on the rotating shaft, while the outer diameter is press-fitted into the housing. The Mz design indicates a specific construction configuration that should be verified against the manufacturer's data sheet before mounting, especially if you are replacing a worn seal or one from another source.

Typical applications for this oil seal include gearboxes, centrifugal pumps, electric motors, rollers and power transmission equipment. In all these cases it performs the same function: keeping oil or grease inside the assembly and preventing the entry of contaminants that accelerate wear on bearings and gears. It is a common replacement part in preventive maintenance, because the lip hardens or wears with service hours and begins to lose sealing ability.

To select and mount an oil seal such as the 5519, verify that the three dimensions match the shaft and housing: 31.75 mm, 52.37 mm and 12.70 mm. Check the condition of the shaft surface, because a scratched or burred surface will ruin the new lip. Lubricate the lip before inserting it and place the seal perpendicular to the shaft, with an installation tool that presses on the outer diameter, never on the lip. If the housing has a shoulder or the shaft is worn, consider a nearby size or a seal with a sleeve.

If you need an equivalent or a size close to the DBH 5519, the most practical approach is to send us the full code and, if possible, the dimensions measured with a caliper: shaft diameter, housing bore diameter and height. With that data we can look for alternatives within the DBH line or other brands we supply. A photo of the old seal and the housing also helps, because it helps confirm the lip type and design. You do not need to have the exact designation: the dimensions guide the search.

At MR Accesorios Industriales we supply the DBH brand as part of our catalog of seals and oil seals. If this 5519 is the one you need, or if you want us to look for an equivalent size, send the code on WhatsApp and we will send you the quote. We can also advise you on installation or on what to check on the shaft and housing before installing the part.