Radial shaft seal DBH 5530 — 31.75 x 57.15 x 12.70

DBH 5530 is a radial shaft seal reference, within Seals. Request a quote for 5530 via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.

The DBH 5530 oil seal is a single-lip radial seal that is mounted on the shaft and closes against the housing to retain lubricant and stop dust, water or particles from entering. Due to its dimensions —31.75 mm shaft, 57.15 mm housing and 12.70 mm height— it is used in gearboxes, pumps, electric motors and power transmission equipment. It is a wear part: when the lip hardens or oil loss appears, it is replaced with an equivalent seal.

This item is a DBH radial shaft seal designated 5530, with the dimensions shown on its product page: 31.75 mm shaft diameter, 57.15 mm housing diameter and 12.70 mm height. The Mz design corresponds to the series' construction variant, with a sealing lip and metal body for press fitting into the housing. Code 5530 identifies the exact combination of those three dimensions, so it should not be replaced by a seal with similar dimensions without checking the manufacturer's data sheet.

Seals of this size are found in equipment where a shaft rotates inside an oil or grease sump. Typical applications: gearboxes, reducers, centrifugal pumps, electric motors, compressors, mixers and chain or belt drives. In all these cases the seal serves two functions at once: it prevents lubricant from escaping through the shaft passage and blocks the ingress of contaminants that wear down bearings and gears.

Before installing a seal, check the condition of the shaft and the housing. The shaft must have no burrs, deep scratches or wear in the lip contact area; the housing must be clean and free of deformation. It is recommended to lubricate the lip with the same grease or oil used in the equipment, insert it perpendicular to the shaft and press it in with a tube or spacer that rests on the outer edge, never on the lip. Tapping unevenly or forcing the seal in at an angle is the most common cause of premature leaks.

If the 5530 seal does not appear in the catalog or you need a nearby size, the most practical approach is to send the full code and the dimensions taken with a caliper: shaft diameter, housing diameter and height. With those three data points, an equivalent can be found in the same DBH series or in another brand MR carries, as long as the three dimensions and the design type match. A photo of the old seal and the housing also helps confirm the variant.

MR Accesorios Industriales carries the DBH brand as an official brand, along with bearings, housings, power transmission, seals, bushings, installation tools and lubricants. If you want to request a quote for the 5530 oil seal or ask about an equivalent, send the code by WhatsApp and we will reply with the alternative that best fits your equipment.