DBH 9735Pol radial shaft seal — 57 x 85 x 12

DBH 9735Pol belongs to radial shaft seal, part of our Seals range. Tell us how many you need by WhatsApp or email and we'll get back to you promptly with a quote for 9735Pol and any equivalents.

The DBH 9735Pol is a radial shaft seal that sits between a turning shaft and its housing. It keeps lubricant where it belongs and keeps dust, water and other particles out. Shaft 57 mm, housing 85 mm, height 12 mm, Mz-Bidi profile. You will find this size in gearboxes, pumps, motors and power transmission equipment running continuously in dirty conditions.

Reading the code helps when you reorder. DBH identifies the radial shaft seal line, 9735 is the series, and the Pol suffix marks the compound variant. The three values that matter for fit are shaft 57 mm, housing 85 mm and height 12.00 mm. Mz-Bidi describes a double-lip profile that seals with pressure coming from either side, which suits reversible shafts or cases where lubrication reaches the seal from both directions. The 12 mm height is what the housing bore must accommodate.

On a 57 mm shaft you would typically find this seal in speed reducers, centrifugal pumps, electric motors, conveyor rollers and machine tools. Its job is twofold: hold oil or grease inside, and stop contaminants from reaching the bearing or gear set. Where the shaft reverses direction or a pressure difference exists between the lubricated side and the outside, the Mz-Bidi configuration is the reason this profile is chosen.

Selection starts with the shaft. Confirm the diameter falls inside the tolerance band recommended for radial shaft seals, and confirm the housing bore and depth match 85 mm and 12 mm. The shaft surface should be ground and free of grooves that could cut the lip. Lubricate the lip with the same oil or grease the equipment uses before pressing it in, and drive it with a tool that contacts the outer edge rather than the lip. A worn shaft can often be brought back with a repair sleeve.

For an equivalent, send the complete part number 9735Pol together with the shaft, housing and height measurements. That lets us look through the DBH line and the other brands we carry for the same Mz-Bidi profile or a design that will work in its place. We can also tell you whether the housing can take a different height, or whether a seal with an extra lip makes more sense where dust is heavy.

MR Industrial Accessories supplies the DBH brand. If you are unsure about installation or want confirmation that this seal fits your equipment, message us on WhatsApp or by email with the part number 9735Pol and your shaft and housing dimensions. We will come back with a quote.