DBH 5211Pol radial shaft seal — 42 x 56 x 7

DBH 5211Pol is a reference of radial shaft seal, within Seals. Request a quote for 5211Pol via WhatsApp or email with the quantity you need; we respond promptly with the quote and equivalents.

The DBH 5211Pol oil seal is a single-lip radial shaft seal designed for rotating shafts where lubricant must be retained and dust, water or particles kept out. It is press-fitted into the housing and runs on the shaft with a flexible lip that compensates for minor misalignment. It is a wear part: when it starts to leak, it should be replaced before lubricant escapes and damages nearby bearings or gears.

This item is a DBH radial shaft seal with designation 5211Pol, with the following dimensions: shaft diameter 42 mm, housing diameter 56 mm and height 7.00 mm. The indicated design is A 136-R. It is a lip seal that is installed in the housing with an interference fit and rides on the shaft on a running surface. The lip elastomer and the internal spring maintain contact; the outer body ensures sealing in the housing.

Typical applications for a seal of this size are gearboxes, centrifugal pumps, electric motors, drive shafts, mixers and process equipment. It is generally used where lubricant must stay inside and contaminants must stay outside. It also appears in agricultural machinery, conveyors and plant equipment where the shaft rotates continuously and the temperature does not exceed the limits of the lip material.

For proper installation, check that the shaft is clean, free of burrs and marks, and that the running surface has the appropriate roughness. The housing must be in good condition and have the correct diameter so the seal goes in straight and press-fitted. Lubricate the lip before inserting the shaft and avoid striking it. If the old seal leaked, also check the bearing clearance and the condition of the shaft: a scratched or worn shaft will ruin any new seal.

To request a quote for an equivalent, send us code 5211Pol or the dimensions of the old seal (shaft, housing and height). A photo of the part and the housing also works. With that data we search the DBH line and other brands we carry to give you a compatible alternative. We evaluate options with the same shaft and housing diameter.

MR Accesorios Industriales carries the DBH brand. If you want to request a quote for this seal, write to us on WhatsApp with code 5211Pol and we will reply with the technical information for your order.