DBH 5270 radial shaft seal — 30 x 40 x 7

DBH 5270 is a reference of radial shaft seal, within Seals. Request a quote for 5270 via WhatsApp or email with the quantity you need; we respond promptly with the quote and equivalents.

The DBH 5270 oil seal is a radial shaft seal with a 30 mm shaft diameter, 40 mm housing diameter and 7 mm height, in Lz design. It is used to retain lubricant and exclude contaminants in rotating equipment, protecting bearings and guides. It is a wear part that should be replaced when oil leakage or dirt ingress appears. MR Accesorios Industriales carries this brand and advises you on choosing the right oil seal for your application.

This item is a DBH 5270 radial shaft seal, identified by its designation 5270. Its dimensions are 30 mm shaft diameter (d), 40 mm housing diameter (D) and 7 mm height (h). The Lz design corresponds to a single sealing lip with spring, intended for rotating shafts with lubrication. The elastomeric lip presses against the shaft and creates a barrier against oil or grease leaks, while the outer body fits into the housing to maintain position.

It is used in gearboxes, pumps, electric motors, transmission shafts and process equipment where a rotating shaft passes through a housing. It also appears in applications exposed to dust, wash water or chips, provided the oil seal is correctly selected. In those cases, the exclusion lip helps keep contamination out of the lubricant and extends the life of nearby bearings and bushings.

For installation, check that the shaft has no burrs or deep marks and that the housing is clean and free of deformation. Lubricate the lip before sliding it on and avoid striking it during installation. Selection depends on peripheral speed, operating temperature and the fluid to be retained; if these data are not defined, it is advisable to consult the manufacturer or a specialist. The 7 mm height and Lz design are specific to this reference.

To quote an equivalent, send us the full part number, the shaft and housing dimensions, and a photo of the old part if you have one. With that data we can look for an alternative within the same category or subcategory or from another brand that fulfills the function. Do not improvise with an oil seal of similar dimensions: one millimeter of difference in shaft diameter can cause leaks or excessive fit.

To request a quote for the DBH 5270 oil seal, write to us on WhatsApp with part number 5270 and the quantity you need. MR Accesorios Industriales will reply shortly and offer alternatives if this reference is not the one you were looking for. We can also advise you on installation and care so the oil seal lasts as expected in your equipment.