DBH 9503 radial shaft seal — 36 x 52 x 10

DBH 9503 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 9503 and any equivalents.

The DBH 9503 is a radial shaft seal built to sit in a housing bore and ride on a rotating shaft, holding lubricant in and keeping dust, water and particles out. Its size is given as 36 x 52 x 10 mm, and the Lx-R-AH design describes a single spring-loaded radial lip with a metal case that presses into the housing. Because the lip rubs against the shaft, this is a wear part: once leakage shows up or contamination gets past it, the seal is replaced with one of the same size and design.

Reading the code is straightforward. DBH 9503 identifies the reference, and the three figures that follow describe the fit: shaft 36.00 mm (d), housing bore 52.00 mm (D), height 10.00 mm (h). The Lx-R-AH designation covers the lip and case arrangement, so a replacement should match both the dimensions and that configuration. DBH is one of the seal lines MR supplies, and the 9503 code maps to that reference.

You will find seals of this size on transmission shafts, centrifugal pumps, electric motors, reducers and gearboxes. In every case the job is the same: keep oil or grease where it belongs and block dust, water and particles from getting in. Plants running continuous processes often swap them on a schedule rather than waiting for a failure, since a leaking seal can take a line down. Shaft misalignment or vibration loads the lip harder and shortens how long it lasts.

Installation decides how well the seal performs. Inspect the shaft first and remove burrs or deep marks in the area the lip contacts. Coat the lip with the same oil the equipment uses, then slide the seal on with a support tube so the case and lip are not distorted. The housing bore needs to be clean and free of old sealant. When choosing a replacement, look beyond the 36 x 52 x 10 mm size at the fluid being sealed, the operating temperature and the shaft speed. If the original is Lx-R-AH, stay with that design unless the equipment manufacturer says otherwise.

To match an equivalent, send the 9503 code or the DBH 9503 designation along with your shaft and housing dimensions. A photo of the old seal or the assembly drawing also helps. We check the code against the manufacturer's data to confirm size and design before quoting, and if that exact size is not offered we look within the same radial seal category. Reach us on WhatsApp or by email with the code and the quantity you need, and we will come back with the quote and any alternatives. Questions about other sizes or other DBH seals are welcome.