DBH 5177Sil radial shaft seal — 40 x 55 x 10

DBH 5177Sil is a reference of radial shaft seal, within Seals. Request a quote for 5177Sil via WhatsApp or email with the quantity you need; we respond promptly with the quote and equivalents.

The DBH 5177Sil radial shaft seal is a lip seal that is mounted in the housing and closes against the rotating shaft to retain lubricant and block the entry of dust, water or particles. Due to its dimensions of 40 mm shaft, 55 mm housing and 10 mm height, and its Lx design, it is a common replacement part in gearboxes, pumps, electric motors and transmission equipment operating with 40 mm shafts. MR Accesorios Industriales carries this brand and advises you on choosing the correct seal.

This item is a seal from the DBH line, identified with the part number 5177Sil. Its nominal dimensions are 40.00 mm shaft diameter (d), 55.00 mm housing diameter (D) and 10.00 mm height (h). The Lx design corresponds to a single-lip seal with spring, intended for rotating shafts with lubrication and without high differential pressure. The designation 5177Sil groups the geometry and lip material; to confirm compatibility with your equipment, it is always advisable to compare these dimensions with the drawing or the original part.

Typical applications for a 40 x 55 x 10 mm seal include gearboxes, speed reducers, centrifugal pumps, electric motors, spindles and belt or chain transmission equipment. In all these cases the seal performs two functions: preventing leakage of the oil or grease from the bearing and preventing contaminants from entering from outside. It is a wear part that is replaced when lubricant loss, noise, vibration or dirt ingress into the housing appears.

For mounting, check that the shaft has no burrs, deep scratches or wear that prevents uniform contact of the lip. The housing must be clean, without remains of old sealant, and it is advisable to lubricate the lip with the same service oil or grease before inserting it. Installation is done with a suitable tool, applying uniform pressure on the outer ring, never on the lip. If the shaft shows a marked groove, consider slightly offsetting the seal so that the lip rests on a healthy area.

If you need an equivalent, the most practical thing is to send us the part number 5177Sil together with the shaft, housing and height dimensions, and a photo of the part or the drawing. With that data we can look for alternatives within the same radial shaft seal category, respecting the design and lip type. We can also guide you if the original seal has a special geometry or if the housing has been ground and requires a different size.

To request a quote for this DBH 5177Sil oil seal, send the part number and dimensions by WhatsApp to MR Accesorios Industriales. We reply with the quote and the alternatives that best fit your equipment. We can advise you on mounting and selecting the right seal for your application.