DBH 5749 radial shaft seal — 101.6 x 130.17 x 14.28

DBH 5749 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 5749 and any equivalents.

When a rotating assembly starts weeping oil around the shaft, the first thing to confirm is whether the seal still matches the seat it sits in. The DBH 5749 is a radial shaft seal built for large shafts, with a 101.60 mm shaft diameter, a 130.17 mm housing diameter and a 14.28 mm height. Its job is straightforward: hold lubricant in and keep dust, water and grit out of the bearing cavity. MR supplies this line and can help you match it to your equipment.

The part is listed under the DBH line as reference 5749, and the Lz designation tells you it is a single lip with spring. That spring-loaded lip rides against the shaft and keeps oil or grease where it belongs. Use 5749 as the number to quote, whether you are replacing the same seal or asking us to cross it to something else.

Sizes in this range turn up on gearboxes, centrifugal pumps, mills, mixers and other power transmission equipment. The function never changes: lubricant stays inside, contaminants stay outside, and the bearing behind the seal is protected from the grit that would otherwise shorten its life. Because it is a wear part, put it on the preventive maintenance checklist and swap it out as soon as you see seepage or a lip that has gone hard.

Selection comes down to four things: shaft speed, operating temperature, the lubricant in use and the condition of the shaft surface. The lip seals against the shaft, so that diameter has to sit within tolerance and be free of deep scoring. The housing bore needs to be clean, with no burrs to nick the outer edge. Lubricate the lip before you press it in and use a proper installation sleeve or driver. If the shaft is already worn, an auxiliary lip is worth considering.

For an equivalent or another size, send part number 5749 along with your shaft and housing dimensions, plus a photo of the old seal if you have one. From there we can check the same DBH line or another brand we carry. We will also tell you if Lz is not the right lip type or material for your operating conditions.

MR handles seals and radial shaft seals for industrial equipment and helps customers identify the right part. Send 5749 or your seal dimensions through WhatsApp and we will come back with a quote for the option that fits your application.