DBH 5420 radial shaft seal — 20 x 47 x 7

DBH 5420 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 5420 and any equivalents.

A radial shaft seal identified as the DBH 5420 fits a 20 mm shaft and a 47 mm bore, with a 7 mm overall height. Its Lx configuration pairs a primary sealing lip with a secondary dust lip, so lubricant stays contained while outside contamination is kept away from the sealing zone. This is a wear item commonly found in gearboxes, pumps and electric motors.

The designation 5420 tells you which seal you are holding. The three figures on the product page give the fit: shaft 20 mm, housing 47 mm, width 7.00 mm. In the Lx version, a metal case with an elastomer coating carries two lips. The main lip contacts the rotating shaft; the outer lip shields that contact area from dust and splashes. Equipment running in moderately dusty or humid conditions often uses this layout.

You will find seals of this size in gearboxes, centrifugal pumps, electric motors, speed reducers and machine tool transmission shafts. Food, chemical and process plants also use them, since the goal there is the same: hold the lubricant in and keep contaminants out. Because the lip is a wear surface, inspect it whenever the equipment is opened. Replace it if the elastomer has hardened, lost its resilience or shows cuts.

Correct selection starts with three measurements: shaft diameter, housing bore and height. Beyond those, check the lubricant type, the operating temperature and the shaft speed. During fitting, clean the shaft and the housing thoroughly, coat the lip with the same oil or grease the equipment uses, and seat the seal without striking it. If the shaft is worn or grooved, a repair sleeve or a seal with the lip positioned differently may be needed.

To source an equivalent, send the part number 5420 or the dimensions 20 x 47 x 7 mm by WhatsApp or email. Our team can search the seals and oil seals line for alternatives and confirm the details against the manufacturer's product page. We can also advise you when housing or shaft tolerances fall outside the usual range, so the seal ends up neither loose nor over-compressed.

MR Industrial Accessories supplies the DBH brand within its seals and oil seals range. If this item is not quite what your application calls for, message us with the part number or the dimensions and we will help you find the right option. We can also guide you on installation and selection for your equipment.