DBH 5770 radial shaft seal — 30.1 x 51.4 x 11.9

DBH 5770 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 5770 and any equivalents.

Part number 5770 belongs to the DBH line of radial shaft seals. This lip seal sits between a rotating shaft and a stationary housing, holding lubricant in and keeping dust, water and other particles out. Its Mz design uses a single lip with a spring for shafts under permanent lubrication. The seal fits a 30.10 mm shaft, a 51.40 mm housing bore and an 11.90 mm width, sizes common in gearboxes, pumps, motors and transmission equipment where sealing has to hold up with little attention.

Reading the number is straightforward. The 5770 identifies the size within the DBH range, and the three figures that follow in the catalog describe the sealing point: shaft 30.10 mm, housing 51.40 mm, width 11.90 mm. The elastomeric lip rides against the shaft while the metal outer case presses into the bore. In the Mz configuration a spring keeps the lip in contact, which suits rotating shafts that see continuous lubrication.

Seals in this size range turn up in gearboxes, centrifugal pumps, electric motors, compressors, mixers and belt- or chain-driven transmission units. The job is the same in every case: keep oil or grease where it belongs and stop contaminants from reaching bearings and gears, where they would speed up wear.

Installation decides how long the seal lasts. Confirm the shaft diameter and finish, remove burrs and marks, and check the bore diameter and depth before starting. Coat the lip with lubricant, then drive the seal in with a tube that contacts the metal case only. Pressure on the lip will damage it. If the shaft shows a wear groove, an offset lip can move the contact point to fresh surface.

When the original number is not available, the shaft, housing and width dimensions are enough to start a cross-reference, and the marking on the old seal helps confirm it. The team compares those figures against the series on hand and suggests compatible options, including advice on lip design for the lubricant and shaft speed involved.

To request a quote for the DBH 5770 oil seal, send the part number and the quantity you need by WhatsApp or email. Include dimensions or a photo of the old part if you are also looking for an equivalent, and the team will reply with the options that fit your equipment.