DBH 6121Vit radial shaft seal — 30 x 52 x 7

DBH 6121Vit 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 6121Vit and any equivalents.

The DBH 6121Vit is a radial shaft seal built for rotating shafts. It keeps lubricant where it belongs, inside the housing, while blocking dust, water and other particles from getting in. The size callout is 30 mm on the shaft, 52 mm in the housing bore and 7 mm of height, and the seal follows the Mx-R configuration. Maintenance teams commonly pull this seal out of pumps, motors, gearboxes and transmission units when a leak shows up or during scheduled service.

The code breaks down into two parts: 6121Vit is the designation within the DBH line, and the dimensions tell you where it fits. Shaft 30 mm, housing 52 mm, height 7.00 mm. Mx-R describes the build: a metal case with a sealing lip, made for lubricated rotating shafts. The lip compound is selected to hold up against industrial oils and greases, and the spring inside keeps steady pressure against the shaft surface. Treat it as a wear item, replaced on a preventive schedule or as soon as seepage appears.

You will find this seal in centrifugal pumps, electric motors, speed reducers, gearboxes, compressors, and belt- or chain-driven transmission equipment. In every one of those spots it does two jobs at once: holding the lubricant in and keeping outside contamination out. Machine tools, industrial washing equipment and hydraulic systems with a shaft turning inside a fixed housing are other places it turns up. The compact 7 mm height helps where the bore does not leave much room.

Installation rewards a bit of care. Inspect the shaft first for burrs, nicks or scoring that could cut the lip. Coat the lip with the same oil or grease used in service before you press it in. Seat the seal square to the shaft and fully into the housing, using a proper driver rather than striking it directly. A worn shaft journal is a common cause of repeat failures, so a repair sleeve is worth considering in that case. Speed, temperature and lubricant type drive the final selection, and those values should be checked against the manufacturer's data sheet for the application.

Looking for an equivalent? Send the code 6121Vit or simply your three dimensions: shaft, housing and height. From there we can search alternatives in the same brand or in other lines we carry. We can also tell you whether the bore allows a taller or shorter seal, or whether a design with a second lip makes sense where dust is heavy. The goal is to keep the equipment running instead of waiting on a hard-to-find part.

For a quote on the DBH 6121Vit, message us on WhatsApp or by email with the code. Tell us the application details as well, and the answer will be more precise.