DBH 9129 radial shaft seal — 40 x 50 x 7

DBH 9129 is a reference of radial shaft seal, within Seals. Request a quote for 9129 via WhatsApp or email with the quantity you need; we respond promptly with the quote and equivalents.

The DBH 9129 radial shaft seal is a lip seal that closes the passage of oil or grease between a rotating shaft and its housing. With a 40 mm shaft diameter, 50 mm housing diameter and 7 mm height, and Lx design, it is used in gearboxes, pumps, electric motors and power transmission equipment to retain lubricant and stop the entry of dust and water. MR Accesorios Industriales sells this brand and advises you on choosing the correct oil seal.

The DBH 9129 is a spring-loaded lip seal with an Lx design, intended for rotating shafts. Its dimensions are 40 mm shaft diameter (d), 50 mm housing diameter (D) and 7 mm height (h). The elastomeric lip rests on the shaft and the spring keeps it in contact, while the metal body is press-fitted into the housing. This prevents lubricant leakage and the entry of contaminants. It is a wear part: when the lip hardens or becomes marked, it starts to leak.

It is found in gearboxes, reducers, centrifugal pumps, electric motors, compressors and power transmission equipment. Also in agricultural machinery, roller ways and conveyor systems. In all cases it performs the same function: separating the lubricated side from the environment. If the equipment operates with a lot of dust, water or pressure washing, it is advisable to check the oil seal more frequently and evaluate variants with an auxiliary lip or dust lip.

To install it, verify that the shaft is clean, free of burrs and scratches, and that the sliding surface has adequate hardness and finish. Lubricate the lip with the same grease or oil as the equipment before inserting it. Place it perpendicular to the shaft, without striking the lip, using a tube or press that rests on the outer diameter. If the housing has a burr, pass a fine sandpaper over it. A poorly installed oil seal will leak even if it is new.

If you need an equivalent, send us part number 9129 along with the shaft and housing dimensions. It also helps if you tell us the brand and model of the equipment where it is installed. With this data we look for alternatives in other brands or in our product line, always respecting diameters and height. If space allows, we can offer you design or material variants according to the fluid and working temperature.

MR Accesorios Industriales sells the DBH brand. To request a quote for this oil seal or ask about a different size, write to us on WhatsApp with part number 9129 and the dimensions. We will reply with the corresponding reference and coordinate shipping.