DBH 5506 radial shaft seal — 31.4 x 42.85 x 7.93

DBH 5506 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 5506 and any equivalents.

The DBH 5506 is a radial shaft lip seal built to keep lubricant inside a rotating assembly and hold dirt and moisture out. Its Mx design uses a single spring-loaded lip, and the three key measurements are shaft 31.40 mm, housing 42.85 mm and height 7.93 mm. MR Industrial Accessories supplies this brand and can help you confirm the right seal for the job.

The code 5506 belongs to the DBH line of radial shaft seals. Reading the size is straightforward: d = 31.40 mm is the shaft the lip rides on, D = 42.85 mm is the bore the outer case presses into, and h = 7.93 mm is the overall height. The Mx designation tells you the sealing element is a single lip with a spring, a common choice for lubricated rotating shafts. The lip contacts the shaft while the case stays fixed in the housing, which is what blocks oil from escaping and keeps dust and water from getting in.

You will run into this size in gear reducers, centrifugal pumps, electric motors, compressors and other power transmission equipment. Because the cross-section is compact, it shows up often in agricultural machinery, process lines and hydraulic systems where radial room is tight. Maintenance crews also use it when rebuilding fan, mixer and conveyor shafts.

Fitting it correctly starts with checking that the shaft and housing match the numbers above. The shaft surface should be smooth and free of burrs or nicks, since anything sharp can score the lip. Put a light film of lubricant on the lip before sliding it on, and press on the outer case with a proper driver, never on the lip itself. When replacing a seal, compare the lip material and design against the fluid and operating temperature of the equipment.

If you need a cross-reference from another brand, send the code 5506 or the measurements of the old seal and we will look through our seals and radial shaft seal range for a match. MR Industrial Accessories supplies the brands we carry and also manufactures split plummer block housings, roller chains and sheaves, so we can talk through the whole assembly if needed.

To get a quote, message us on WhatsApp with the code and the quantity you need. If you are unsure whether this model fits, send a photo of the housing along with your shaft measurements and we will confirm it before you order.