DBH 1221/85 radial shaft seal — 22 x 48 x 7/10.7

DBH 1221/85 is a reference of radial shaft seal, within Seals. Request a quote for 1221/85 via WhatsApp or email with the quantity you need; we respond promptly with the quote and equivalents.

The DBH 1221/85 seal is a single-lip radial seal that mounts on the shaft and seals against the housing to retain lubricant and stop the ingress of dust, water or particles. It is used in gearboxes, pumps, electric motors and transmission equipment where a rotating shaft exits a housing. Its design A 120 and stepped height of 7.00/10.70 mm allow it to be seated in chambers with a shoulder and achieve a firm fit without deforming the lip.

This item is a DBH radial shaft seal identified as 1221/85. Its dimensions are: shaft diameter (d) 22 mm, housing diameter (D) 48 mm and height (h) 7.00/10.70 mm. Design A 120 corresponds to a seal with a sealing lip and metal body, with the height split into two sections: 7.00 mm of seating in the housing and 10.70 mm of total height. This stepped geometry allows it to be mounted in chambers with a shoulder and improves axial retention. The lip works on the shaft with slight interference to ensure tightness.

Typical applications of this seal appear in equipment with 22 mm shafts that need sealing against oil or grease loss. It is found in gearboxes, centrifugal pumps, electric motors, fans, mixers and machine tools. It is also used in chain or belt drives where the output shaft passes through a cover. In all cases, the seal separates the lubricated interior from the environment and prevents lubricant from escaping or dirt from entering that would accelerate wear of bearings and gears.

To mount this seal, verify that the shaft is clean, free of burrs or marks, and that the sealing surface has adequate hardness and roughness. Lubricate the lip before inserting it and place the seal perpendicular to the shaft, without hitting the lip. If the housing has a shoulder, the 7.00/10.70 mm height defines how far it goes in. To select a replacement, always compare the three dimensions: shaft, housing and height, and the design type. A difference of tenths in shaft diameter can prevent the lip from sealing.

If you need a seal equivalent to 1221/85, send us the complete part number, the shaft, housing and height dimensions, and a photo or sample of the old seal. With that data we search the DBH line and other compatible alternatives. We can also advise you if the housing has a shoulder or if the shaft shows wear. The more precise the information, the faster we find the option that best suits your equipment.

MR Accesorios Industriales carries the DBH brand. If you want to request a quote for the 1221/85 seal or ask about an equivalent, write to us on WhatsApp and we will reply with the technical information you need. We can also advise you on assembly and selection so the seal works under the correct conditions.