DBH 6850 radial shaft seal — 31 x 47 x 7.5

DBH 6850 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 6850 and any equivalents.

The DBH 6850 is a radial shaft seal that keeps lubricant in and contaminants out of rotating equipment. It is built to the design A 178 configuration and has a 31.00 mm shaft, 47.00 mm housing and 7.50 mm height. MR Industrial Accessories supplies this brand and can help you confirm that the seal matches your application.

This seal carries the designation 6850 and belongs to the DBH line. Its three key dimensions are a shaft diameter (d) of 31 mm, a housing diameter (D) of 47 mm and a height (h) of 7.50 mm. Design A 178 indicates a specific internal construction within that line. Those measurements determine whether the seal will fit the shaft and bore you are working with. The sealing action takes place where the lip runs against the rotating shaft surface.

You will find seals like this one in gearboxes, pumps, electric motors, reducers and other power transmission equipment. Their job is to hold oil or grease inside and to block dust, water and particles from reaching bearings and gears. Selection depends on shaft speed, operating temperature and the lubricant in use, so it is worth checking compatibility with the fluid and the surrounding conditions before you install.

Installation calls for a clean shaft and housing with no burrs. Coat the lip with the same oil or grease the seal will retain, then press the seal in squarely using a tube or driver that contacts only the outer ring, never the lip. Confirm that the spring sits correctly. If the shaft shows wear or grooves, consider a repair sleeve or a seal with an auxiliary lip.

If you are looking for an equivalent, send us the code 6850 or your shaft and housing dimensions. MR Industrial Accessories carries alternatives from other brands and can point you to the right option, including design variants and lip materials such as NBR, FKM or PTFE. To request a quote, message us on WhatsApp or by email. We also manufacture split plummer block housings, roller chains and sheaves, and we supply bearings, power transmission parts, seals, lubrication and maintenance tools.